pax_global_header 0000666 0000000 0000000 00000000064 14173526301 0014514 g ustar 00root root 0000000 0000000 52 comment=45eddc08e64478ae0b52d1fe32c3a9529879c68b
pybedtools-0.9.0/ 0000775 0000000 0000000 00000000000 14173526301 0013706 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/.github/ 0000775 0000000 0000000 00000000000 14173526301 0015246 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/.github/workflows/ 0000775 0000000 0000000 00000000000 14173526301 0017303 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/.github/workflows/main.yml 0000664 0000000 0000000 00000010231 14173526301 0020747 0 ustar 00root root 0000000 0000000 name: main
on: [push]
jobs:
build-and-test:
strategy:
matrix:
python-version: [3.6, 3.7, 3.8, 3.9]
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: git setup
# Set up git and export env vars to be used in later steps.
# Note the unconventional mechanism for exporting envs by appending to
# $GITHUB_ENV.
id: git-setup
run: |
git config --global user.email "action@github.com"
git config --global user.name "GitHub Action"
echo "BRANCH=${GITHUB_REF##*/}" >> $GITHUB_ENV
echo "WORKDIR=$(pwd)" >> $GITHUB_ENV
- name: cythonize and pip
# Convert .pyx files to .cpp and package into sdist tarball.
#
# This only requires Cython, no other dependencies.
run: |
eval "$(conda shell.bash hook)"
conda create -p ./cython-env -y cython
conda activate ./cython-env
python setup.py clean cythonize sdist
(cd dist && pip install pybedtools-*.tar.gz && cd $TMPDIR && python -c 'import pybedtools; print(pybedtools.__file__)')
conda deactivate
- name: conda env and install locally
# Set up conda and install pybedtools into that env
#
# NOTE: Tests require *.so files that are created by installing the
# package, otherwise we get:
#
# ModuleNotFoundError: No module named 'pybedtools.cbedtools'
#
# We could install from the source repo dir. However this may inadvertently
# rely on files that are in the source repo but not in the actual sdist
# package. So we extract the sdist tarball to another location and install
# from there.
#
# Tests below will operate in this newly-installed directory.
run: |
eval "$(conda shell.bash hook)"
conda create -y -p ./test-env \
--channel conda-forge \
--channel bioconda python=${{ matrix.python-version }} \
--file requirements.txt \
--file test-requirements.txt \
--file optional-requirements.txt
conda activate ./test-env
mkdir -p /tmp/pybedtools-uncompressed
cd /tmp/pybedtools-uncompressed
tar -xf $WORKDIR/dist/pybedtools-*.tar.gz
cd pybedtools-*
pip install -e .
python -c 'import pybedtools; print(pybedtools.__file__)'
ls *
- name: tests
# Run pytest and sphinx doctests
run: |
eval "$(conda shell.bash hook)"
cd $WORKDIR
conda activate ./test-env
# Move to extracted tarball dir, see above notes
cd /tmp/pybedtools-uncompressed/pybedtools-*
pytest -v --doctest-modules
pytest -v pybedtools/test/genomepy_integration.py
cp -r $WORKDIR/docs .
(cd docs && make clean doctest)
- name: build-docs
# Build docs and commit to gh-pages branch. Note that no push happens
# unless we're on the master branch
run: |
eval "$(conda shell.bash hook)"
conda activate ./test-env
# Move to extracted tarball dir, see above notes
cd /tmp/pybedtools-uncompressed/pybedtools-*
(cd docs && make html)
git clone \
--single-branch \
--branch gh-pages "https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY" \
/tmp/docs
rm -rf /tmp/docs/*
cp -r docs/build/html/* /tmp/docs
touch /tmp/docs/.nojekyll
cd /tmp/docs
git add .
if git diff --cached --quiet; then
echo "no changes, nothing to commit"
else
git commit -m 'update docs'
fi
cd $WORKDIR
- name: docs artifact
# Upload built docs as an artifact for inspection, even on PRs
uses: actions/upload-artifact@v2
with:
name: docs
path: /tmp/docs
- name: push docs to gh-pages branch
# Push docs to gh-pages if this test is running on master branch
if: ${{ (github.ref == 'refs/heads/master') && (matrix.python-version == 3.8) }}
run: |
cd /tmp/docs
git push "https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY" gh-pages
cd $WORKDIR
pybedtools-0.9.0/.gitignore 0000664 0000000 0000000 00000000434 14173526301 0015677 0 ustar 00root root 0000000 0000000 .tox*
*.coverage
virtual-env/*
dist/*
build/*
docs/_build/doctrees/*
docs/build
*.swp
docs/source/README.rst
pybedtools.egg-info/*
*.pyc
*.so
*.fai
*.egg
pybedtools/_Window.c
pybedtools/cbedtools.cpp
pybedtools/featurefuncs.cpp
*.bak
cythonize.dat
docs/source/autodocs/*.rst
MANIFEST
pybedtools-0.9.0/LICENSE.txt 0000664 0000000 0000000 00000002134 14173526301 0015531 0 ustar 00root root 0000000 0000000 Wrapper -- and more -- for BEDtools
Copyright (c) 2010-2022 Ryan Dale
All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
pybedtools-0.9.0/MANIFEST.in 0000664 0000000 0000000 00000000535 14173526301 0015447 0 ustar 00root root 0000000 0000000 recursive-include pybedtools/include/ *
include README.rst
include LICENSE.txt
include ez_setup.py
recursive-include pybedtools/test/data *
recursive-include pybedtools/test *
include docs/Makefile
include docs/make.bat
recursive-include pybedtools *.cpp
recursive-include pybedtools *.c
recursive-exclude * __pycache__
recursive-exclude * *.py[co]
pybedtools-0.9.0/README.rst 0000664 0000000 0000000 00000005041 14173526301 0015375 0 ustar 00root root 0000000 0000000 Overview
--------
.. image:: https://travis-ci.org/daler/pybedtools.png?branch=master
:target: https://travis-ci.org/daler/pybedtools
.. image:: https://badge.fury.io/py/pybedtools.svg?style=flat
:target: http://badge.fury.io/py/pybedtools
.. image:: https://img.shields.io/badge/install%20with-bioconda-brightgreen.svg
:target: http://bioconda.github.io
The `BEDTools suite of programs `_ is widely
used for genomic interval manipulation or "genome algebra". `pybedtools` wraps
and extends BEDTools and offers feature-level manipulations from within
Python.
See full online documentation, including installation instructions, at
http://daler.github.io/pybedtools/.
Why `pybedtools`?
-----------------
Here is an example to get the names of genes that are <5 kb away from
intergenic SNPs:
.. code-block:: python
from pybedtools import BedTool
snps = BedTool('snps.bed.gz') # [1]
genes = BedTool('hg19.gff') # [1]
intergenic_snps = snps.subtract(genes) # [2]
nearby = genes.closest(intergenic_snps, d=True, stream=True) # [2, 3]
for gene in nearby: # [4]
if int(gene[-1]) < 5000: # [4]
print gene.name # [4]
Useful features shown here include:
* `[1]` support for all BEDTools-supported formats (here gzipped BED and GFF)
* `[2]` wrapping of all BEDTools programs and arguments (here, `subtract` and `closest` and passing
the `-d` flag to `closest`);
* `[3]` streaming results (like Unix pipes, here specified by `stream=True`)
* `[4]` iterating over results while accessing feature data by index or by attribute
access (here `[-1]` and `.name`).
In contrast, here is the same analysis using shell scripting. Note that this
requires knowledge in Perl, bash, and awk. The run time is identical to the
`pybedtools` version above:
.. code-block:: bash
snps=snps.bed.gz
genes=hg19.gff
intergenic_snps=/tmp/intergenic_snps
snp_fields=`zcat $snps | awk '(NR == 2){print NF; exit;}'`
gene_fields=9
distance_field=$(($gene_fields + $snp_fields + 1))
intersectBed -a $snps -b $genes -v > $intergenic_snps
closestBed -a $genes -b $intergenic_snps -d \
| awk '($'$distance_field' < 5000){print $9;}' \
| perl -ne 'm/[ID|Name|gene_id]=(.*?);/; print "$1\n"'
rm $intergenic_snps
See the `Shell script comparison `_ in the docs
for more details on this comparison, or keep reading the full documentation at
http://daler.github.io/pybedtools.
pybedtools-0.9.0/build-docs.sh 0000775 0000000 0000000 00000001350 14173526301 0016271 0 ustar 00root root 0000000 0000000 #!/bin/bash
# Build docs here, then copy them over to a fresh, temporary checkout of the
# gh-pages branch from github. Then upload 'em. After a few minutes, you'll see
# the newly-generated docs at daler.github.io/pybedtools.
# Ideas from:
# http://executableopinions.readthedocs.org/en/latest/labs/gh-pages/gh-pages.html
set -e
set -x
(cd docs && make html)
HERE=$(pwd)
MSG="Adding gh-pages docs for $(git log --abbrev-commit | head -n1)"
DOCSOURCE=$HERE/docs/build/html
TMPREPO=/tmp/docs
rm -rf $TMPREPO
mkdir -p -m 0755 $TMPREPO
git clone git@github.com:daler/pybedtools.git $TMPREPO
cd $TMPREPO
git checkout gh-pages
cp -r $DOCSOURCE/* $TMPREPO
touch $TMPREPO/.nojekyll
git add -A
git commit -m "$MSG"
git push origin gh-pages
cd $HERE
pybedtools-0.9.0/dev-requirements.txt 0000664 0000000 0000000 00000000066 14173526301 0017750 0 ustar 00root root 0000000 0000000 cython
matplotlib
numpydoc
pandas
pyyaml
sphinx
pysam
pybedtools-0.9.0/docker/ 0000775 0000000 0000000 00000000000 14173526301 0015155 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docker/full-test.sh 0000775 0000000 0000000 00000000434 14173526301 0017434 0 ustar 00root root 0000000 0000000 #!/bin/bash
set -e
set -x
# Build the configured containers and run tests in each.
#
#
containers="pbt-test-py2 pbt-test-py3"
for container in $containers; do
docker build -t $container $container
docker run -it -v $(pwd)/..:/opt/pybedtools $container docker/harness.sh
done
pybedtools-0.9.0/docker/harness.sh 0000775 0000000 0000000 00000001230 14173526301 0017153 0 ustar 00root root 0000000 0000000 #!/bin/bash
set -e
set -x
# Use Agg backend for matplotlib, which avoids X server errors
mplrc=$(python -c 'from matplotlib import matplotlib_fname as mf; print(mf())')
mkdir -p ~/.config/matplotlib
cp $mplrc ~/.config/matplotlib
sed -i "s/: Qt4Agg/: Agg/g" ~/.config/matplotlib/matplotlibrc
# The repo should have been exported to the container as /opt/pybedtools.
#
# Since docker runs as root, and we want to keep the exported data intact, we
# make a copy and do a completely clean installation on that copy before
# running tests.
cd ~
cp -r /opt/pybedtools .
cd pybedtools
python setup.py clean
python setup.py develop
nosetests
(cd docs && make doctest)
pybedtools-0.9.0/docker/pbt-test-py2/ 0000775 0000000 0000000 00000000000 14173526301 0017427 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docker/pbt-test-py2/Dockerfile 0000664 0000000 0000000 00000001630 14173526301 0021421 0 ustar 00root root 0000000 0000000 FROM ubuntu:14.04
MAINTAINER Ryan Dale
RUN apt-get update && apt-get install -y \
build-essential \
bzip2 \
ca-certificates \
git \
libglib2.0-0 \
libsm6 \
libxext6 \
libxrender1 \
mysql-client \
wget \
zlib1g-dev
RUN echo 'export PATH=/opt/conda/bin:$PATH' > /etc/profile.d/conda.sh && \
wget --quiet https://repo.continuum.io/miniconda/Miniconda-3.10.1-Linux-x86_64.sh && \
/bin/bash /Miniconda-3.10.1-Linux-x86_64.sh -b -p /opt/conda && \
rm Miniconda-3.10.1-Linux-x86_64.sh && \
/opt/conda/bin/conda install --yes conda==3.14.1
ENV PATH /opt/conda/bin:$PATH
RUN conda install -c daler \
pip \
cython \
matplotlib \
nose \
numpydoc \
pip \
pandas \
pyyaml \
sphinx \
pysam
RUN conda install -c daler \
tabix \
bedtools=2.25.0
ENV DISPLAY=:0
ENV LANG C.UTF-8
WORKDIR /opt/pybedtools
pybedtools-0.9.0/docker/pbt-test-py3/ 0000775 0000000 0000000 00000000000 14173526301 0017430 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docker/pbt-test-py3/Dockerfile 0000664 0000000 0000000 00000001633 14173526301 0021425 0 ustar 00root root 0000000 0000000 FROM ubuntu:14.04
MAINTAINER Ryan Dale
RUN apt-get update && apt-get install -y \
build-essential \
bzip2 \
ca-certificates \
git \
libglib2.0-0 \
libsm6 \
libxext6 \
libxrender1 \
mysql-client \
wget \
zlib1g-dev
RUN echo 'export PATH=/opt/conda/bin:$PATH' > /etc/profile.d/conda.sh && \
wget --quiet https://repo.continuum.io/miniconda/Miniconda3-3.10.1-Linux-x86_64.sh && \
/bin/bash /Miniconda3-3.10.1-Linux-x86_64.sh -b -p /opt/conda && \
rm Miniconda3-3.10.1-Linux-x86_64.sh && \
/opt/conda/bin/conda install --yes conda==3.14.1
ENV PATH /opt/conda/bin:$PATH
RUN conda install -c daler \
pip \
cython \
matplotlib \
nose \
numpydoc \
pip \
pandas \
pyyaml \
sphinx \
pysam
RUN conda install -c daler \
tabix \
bedtools=2.25.0
ENV DISPLAY=:0
ENV LANG C.UTF-8
WORKDIR /opt/pybedtools
pybedtools-0.9.0/docs/ 0000775 0000000 0000000 00000000000 14173526301 0014636 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/Makefile 0000664 0000000 0000000 00000011360 14173526301 0016277 0 ustar 00root root 0000000 0000000 # Makefile for Sphinx documentation
#
# You can set these variables from the command line.
SPHINXOPTS =
SPHINXBUILD = sphinx-build
PAPER =
#BUILDDIR = ../../pybedtools-docs
BUILDDIR = build
PDF = build/html/pybedtools_manual.pdf
PDFBUILDDIR = /tmp/doc-pybedtools
PYTHONPATH=$PYTHONPATH:..
# Internal variables.
PAPEROPT_a4 = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) source
.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest
help:
@echo "Please use \`make ' where is one of"
@echo " html to make standalone HTML files"
@echo " dirhtml to make HTML files named index.html in directories"
@echo " singlehtml to make a single large HTML file"
@echo " pickle to make pickle files"
@echo " json to make JSON files"
@echo " htmlhelp to make HTML files and a HTML help project"
@echo " qthelp to make HTML files and a qthelp project"
@echo " devhelp to make HTML files and a Devhelp project"
@echo " epub to make an epub"
@echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
@echo " latexpdf to make LaTeX files and run them through pdflatex"
@echo " text to make text files"
@echo " man to make manual pages"
@echo " changes to make an overview of all changed/added/deprecated items"
@echo " linkcheck to check all external links for integrity"
@echo " doctest to run all doctests embedded in the documentation (if enabled)"
clean:
-rm -rf $(BUILDDIR)/* source/autodocs/*.rst
html:
$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
touch $(BUILDDIR)/html/.nojekyll
dirhtml:
$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
@echo
@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
singlehtml:
$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
@echo
@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
pickle:
$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
@echo
@echo "Build finished; now you can process the pickle files."
json:
$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
@echo
@echo "Build finished; now you can process the JSON files."
htmlhelp:
$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
@echo
@echo "Build finished; now you can run HTML Help Workshop with the" \
".hhp project file in $(BUILDDIR)/htmlhelp."
qthelp:
$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
@echo
@echo "Build finished; now you can run "qcollectiongenerator" with the" \
".qhcp project file in $(BUILDDIR)/qthelp, like this:"
@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/pybedtools.qhcp"
@echo "To view the help file:"
@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/pybedtools.qhc"
devhelp:
$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
@echo
@echo "Build finished."
@echo "To view the help file:"
@echo "# mkdir -p $$HOME/.local/share/devhelp/pybedtools"
@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/pybedtools"
@echo "# devhelp"
epub:
$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
@echo
@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
latex:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
@echo
@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
@echo "Run \`make' in that directory to run these through (pdf)latex" \
"(use \`make latexpdf' here to do that automatically)."
latexpdf:
$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(PDFBUILDDIR)/latex
@echo "Running LaTeX files through pdflatex..."
make -C $(PDFBUILDDIR)/latex all-pdf
cp $(PDFBUILDDIR)/latex/*.pdf $(PDF)
@echo "pdflatex finished; see PDF files in $(PDF)"
text:
$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
@echo
@echo "Build finished. The text files are in $(BUILDDIR)/text."
man:
$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
@echo
@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
changes:
$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
@echo
@echo "The overview file is in $(BUILDDIR)/changes."
linkcheck:
$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
@echo
@echo "Link check complete; look for any errors in the above output " \
"or in $(BUILDDIR)/linkcheck/output.txt."
doctest:
$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
@echo "Testing of doctests in the sources finished, look at the " \
"results in $(BUILDDIR)/doctest/output.txt."
pybedtools-0.9.0/docs/README.rst 0000664 0000000 0000000 00000000107 14173526301 0016323 0 ustar 00root root 0000000 0000000 Compiled HTML docs can be found at http://pythonhosted.org/pybedtools/
pybedtools-0.9.0/docs/make.bat 0000664 0000000 0000000 00000010026 14173526301 0016242 0 ustar 00root root 0000000 0000000 @ECHO OFF
REM Command file for Sphinx documentation
if "%SPHINXBUILD%" == "" (
set SPHINXBUILD=sphinx-build
)
set BUILDDIR=build
set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% source
if NOT "%PAPER%" == "" (
set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
)
if "%1" == "" goto help
if "%1" == "help" (
:help
echo.Please use `make ^` where ^ is one of
echo. html to make standalone HTML files
echo. dirhtml to make HTML files named index.html in directories
echo. singlehtml to make a single large HTML file
echo. pickle to make pickle files
echo. json to make JSON files
echo. htmlhelp to make HTML files and a HTML help project
echo. qthelp to make HTML files and a qthelp project
echo. devhelp to make HTML files and a Devhelp project
echo. epub to make an epub
echo. latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter
echo. text to make text files
echo. man to make manual pages
echo. changes to make an overview over all changed/added/deprecated items
echo. linkcheck to check all external links for integrity
echo. doctest to run all doctests embedded in the documentation if enabled
goto end
)
if "%1" == "clean" (
for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
del /q /s %BUILDDIR%\*
goto end
)
if "%1" == "html" (
%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
echo.
echo.Build finished. The HTML pages are in %BUILDDIR%/html.
goto end
)
if "%1" == "dirhtml" (
%SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
echo.
echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
goto end
)
if "%1" == "singlehtml" (
%SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
echo.
echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
goto end
)
if "%1" == "pickle" (
%SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
echo.
echo.Build finished; now you can process the pickle files.
goto end
)
if "%1" == "json" (
%SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
echo.
echo.Build finished; now you can process the JSON files.
goto end
)
if "%1" == "htmlhelp" (
%SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
echo.
echo.Build finished; now you can run HTML Help Workshop with the ^
.hhp project file in %BUILDDIR%/htmlhelp.
goto end
)
if "%1" == "qthelp" (
%SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
echo.
echo.Build finished; now you can run "qcollectiongenerator" with the ^
.qhcp project file in %BUILDDIR%/qthelp, like this:
echo.^> qcollectiongenerator %BUILDDIR%\qthelp\pybedtools.qhcp
echo.To view the help file:
echo.^> assistant -collectionFile %BUILDDIR%\qthelp\pybedtools.ghc
goto end
)
if "%1" == "devhelp" (
%SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
echo.
echo.Build finished.
goto end
)
if "%1" == "epub" (
%SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
echo.
echo.Build finished. The epub file is in %BUILDDIR%/epub.
goto end
)
if "%1" == "latex" (
%SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
echo.
echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
goto end
)
if "%1" == "text" (
%SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
echo.
echo.Build finished. The text files are in %BUILDDIR%/text.
goto end
)
if "%1" == "man" (
%SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
echo.
echo.Build finished. The manual pages are in %BUILDDIR%/man.
goto end
)
if "%1" == "changes" (
%SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
echo.
echo.The overview file is in %BUILDDIR%/changes.
goto end
)
if "%1" == "linkcheck" (
%SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
echo.
echo.Link check complete; look for any errors in the above output ^
or in %BUILDDIR%/linkcheck/output.txt.
goto end
)
if "%1" == "doctest" (
%SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
echo.
echo.Testing of doctests in the sources finished, look at the ^
results in %BUILDDIR%/doctest/output.txt.
goto end
)
:end
pybedtools-0.9.0/docs/source/ 0000775 0000000 0000000 00000000000 14173526301 0016136 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/source/3-brief-examples.rst 0000664 0000000 0000000 00000006742 14173526301 0021744 0 ustar 00root root 0000000 0000000
.. _BEDTools: http://github.com/arq5x/bedtools
.. _3examples:
Three brief examples
--------------------
Here are three examples to show typical usage of :mod:`pybedtools`. More
info can be found in the docstrings of :mod:`pybedtools` methods and in the
:ref:`tutorial`.
You can also check out :ref:`shell_comparison` for a simple
example of how :mod:`pybedtools` can improve readability of your code with no
loss of speed compared to bash scripting.
.. note::
Please take the time to read and understand the conventions
:mod:`pybedtools` uses to handle files with different coordinate systems
(e.g., 0-based BED files vs 1-based GFF files) which are described
:ref:`here `.
In summary,
* **Integer** values representing start/stop are *always in 0-based
coordinates*, regardless of file format. This means that all
:class:`Interval` objects can be treated identically, and greatly
simplifies underlying code.
* **String** values representing start/stop will use coordinates appropriate
for the format (1-based for GFF; 0-based for BED).
Example 1: Save a BED file of intersections, with track line
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This example saves a new BED file of intersections between your files `mydata/snps.bed` and
`mydata/exons.bed`, adding a track line to the output::
>>> import pybedtools
>>> a = pybedtools.BedTool('mydata/snps.bed')
>>> a.intersect('mydata/exons.bed').saveas('snps-in-exons.bed', trackline="track name='SNPs in exons' color=128,0,0")
Example 2: Intersections for a 3-way Venn diagram
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This example gets values for a 3-way Venn diagram of overlaps. This
demonstrates operator overloading of :class:`BedTool` objects. It assumes that
you have the files `a.bed`, `b.bed`, and `c.bed` in your current working
directory. If you'd like to use example files that come with
:mod:`pybedtools`, then replace strings like `'a.bed'` with
`pybedtools.example_filename('a.bed')`, which will retrieve the absolute path
to the example data file.::
>>> import pybedtools
>>> # set up 3 different bedtools
>>> a = pybedtools.BedTool('a.bed')
>>> b = pybedtools.BedTool('b.bed')
>>> c = pybedtools.BedTool('c.bed')
>>> (a-b-c).count() # unique to a
>>> (a+b-c).count() # in a and b, not c
>>> (a+b+c).count() # common to all
>>> # ... and so on, for all the combinations.
For more, see the :mod:`pybedtools.scripts.venn_mpl` and
:mod:`pybedtools.scripts.venn_gchart` scripts, which wrap this functionality in
command-line scripts to create Venn diagrams using either matplotlib or Google
Charts API respectively. Also see the :mod:`pybedtools.contrib.venn_maker`
module for a flexible interface to the VennDiagram `R` package.
.. _third example:
Example 3: Count reads in introns and exons, in parallel
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This example shows how to count the number of reads in introns and exons in
parallel. It is somewhat more involved, but illustrates several additional
features of :mod:`pybedtools` such as:
* BAM file support (for more, see :ref:`bam`)
* indexing into Interval objects (for more, see :ref:`intervals`)
* filtering (for more, see :ref:`filtering`)
* streaming (for more, see :ref:`BedTools as iterators`)
* ability to use parallel processing
.. literalinclude:: example_3
For more on using :mod:`pybedtools`, continue on to the :ref:`tutorial` . . .
pybedtools-0.9.0/docs/source/FAQs.rst 0000664 0000000 0000000 00000014121 14173526301 0017461 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
FAQs
====
.. note::
More detailed answers to these questions can often be found on the `Issues
`_ page.
"Does pybedtools have a simple reader/writer for BED files?"
------------------------------------------------------------
While `pybedtools` designed to work with BEDTools, the reading/writing/parsing
function can be easily used for other things.
Simply iterating over a :class:`BedTool` object will parse each line into
a :class:`Interval` object. You can then manipulate this or access the fields
as needed.
For example::
x = pybedtools.example_bedtool('a.bed')
for interval in x:
# do something with interval
However, if you're planning on writing the results out to file, it may be more
useful to write a transformation function along with the :meth:`BedTool.each`
method. This allows you to read, transform, and write all in one command::
def my_func(f):
"""
adds 10 bp to the stop
"""
f.stop += 1
return f
pybedtools.example_bedtool('a.bed')\
.each(my_func)\
.saveas('out.bed')
Another useful idiom is creating a generator function. For example, here we
change the name field to reflect the value of a counter. We create a BedTool
from the iterator and then save it::
def gen():
counter = 0
for i in pybedtools.example_bedtool('a.bed'):
i.name = str(counter)
counter += 1
yield i
pybedtools.BedTool(gen()).saveas('counted.bed')
See :ref:`saveresults` for more on saving the results.
"Can I create a BedTool object from an existing list?"
------------------------------------------------------
Sure, the :class:`BedTool` constructor will figure it out::
items = [
('chr1', 100, 200),
('chr1', 500, 600),
]
x = pybedtools.BedTool(items)
"I'm getting an empty BedTool"
------------------------------
Check to make sure you're not consuming a BedTool generator. Note that
:meth:`BedTool.filter` and :meth:`BedTool.each` will return a generator BedTool
object. Keep in mind that checking the length of a generator BedTool will
completely consume it.
It's probably best to save intermediate versions to file using
:meth:`BedTool.saveas`. If you don't provide a filename, it'll save to an
automatically cleaned up tempfile::
my_bedtool\
.filter(my_filter_func)\
.saveas()\
.intersect(y)\
.filter(lambda x: len(x) > 1000)\
.saveas('filtered-intersected-large.bed')
"I'm getting a MalformedBedLineError"
-------------------------------------
This error can be raised by BEDTools itself. Typical reasons are that start
> end, or the fields are not tab-delimited.
You can try the :func:`pybedtools.remove_invalid` function to clean up your
file, or manually edit the offending lines.
"I get a segfault when iterating over a BedTool object"
-------------------------------------------------------
`Issue #88 `_ which
addresses this issue -- in summary, Cython's handling of iterators works
unexpectedly. It's best to call the `next()` method explicitly when doing
complex manipulations on an iterating :class:`BedTool`.
"Can I add extra information to FASTA headers when using BedTool.sequence()?"
-----------------------------------------------------------------------------
Since BEDTools adds the feature name to the FASTA header, you can manipulate
the feature name on the fly with a custom modifier function::
def fields2name(f):
"replace GFF featuretype field with the attributes field"
f[2] = f[-1]
return f
import pybedtools
g = pybedtools.BedTool("my.gff").each(fields2name).sequence(fi='my.fasta')
print open(g.seqfn).readline()
"Too many files open" error
---------------------------
Sometimes you may get the error::
* Too many files open -- please submit a bug report so that this can be fixed
This error occurs because you have hit your operating system's limit on the
number of open files. This usually happens when creating many :class:`BedTool`
objects, often within a for-loop.
In general, **try to create as few** :class:`BedTool` **objects as you can**. Every time you
create a :class:`BedTool` object, you create a new open file. There is usually
a BEDTools program that already does what you want, and will do it faster.
For example, say we want to:
* start with all annotations
* only consider exons
* write a file containing just exons
* count reads in multiple BAM files for each exon
Here is a first draft. Note that the for-loop creates a :class:`BedTool`
object each iteration, and the `result` is yet another :class:`BedTool`. This
will version will raise the "Too many files open" error.
.. code-block:: python
# This version will be slow and, with many exons, will raise the "Too many
# files open" error
import pybedtools
all_features = pybedtools.BedTool('annotations.gff')
fout = open('exons.gff', 'w')
for feature in all_features:
if feature[2] != 'exon':
continue
fout.write(str(feature))
bt = pybedtools.BedTool([feature])
result = bt.multi_bam_coverage(bams=['reads1.bam', 'reads2.bam'])
# ...do something with result
fout.close()
In contrast, it would be better to construct an "exon-only" :class:`BedTool` at
the beginning. The :meth:`BedTool.filter` method is a good way to do this.
Then, there is only one call to :meth:`BedTool.multi_bam_coverage`.
In this version there are only 3 :class:`BedTool` objects: the
one that opens `annotations.gff`, the one that uses `exons.gff` after it is
saved, and `result`. (Note that the one created from the filter operation is
a "streaming" BedTool, so there is no open file that will contribute to the
total).
.. code-block:: python
# This is the recommended way.
import pybedtools
exons = pybedtools.BedTool('annotations.gff')\
.filter(lambda x: x[2] == 'exon')\
.saveas('exons.gff')
result = exons.multi_bam_coverage(bams=['reads1.bam', 'reads2.bam'])
# ...do something with result
pybedtools-0.9.0/docs/source/_static/ 0000775 0000000 0000000 00000000000 14173526301 0017564 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/source/_static/custom.css 0000664 0000000 0000000 00000000060 14173526301 0021604 0 ustar 00root root 0000000 0000000 div.highlight-python pre {
font-size: 0.7em;
}
pybedtools-0.9.0/docs/source/_templates/ 0000775 0000000 0000000 00000000000 14173526301 0020273 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/source/_templates/layout.html 0000664 0000000 0000000 00000000121 14173526301 0022470 0 ustar 00root root 0000000 0000000 {% extends '!layout.html' %}
{% block relbar2 %}
{{ relbar() }}
{% endblock %}
pybedtools-0.9.0/docs/source/autodoc_source.rst 0000664 0000000 0000000 00000025116 14173526301 0021713 0 ustar 00root root 0000000 0000000
.. _autodoc:
.. _pybedtools reference:
.. currentmodule:: pybedtools
:mod:`pybedtools` Reference
===========================
The following tables summarize the methods and functions; click on a method or
function name to see the complete documentation.
.. contents::
:class:`BedTool` creation
-------------------------
The main :class:`BedTool` documentation, with a list of all methods in
alphabetical order at the bottom. For more details, please see :ref:`creating
a BedTool`.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool
`BEDTools` wrappers
-------------------
These methods wrap `BEDTools` programs for easy use with Python; you can then
use the other :mod:`pybedtools` functionality for further manipulation and
analysis.
The documentation of each of these methods starts with
:mod:`pybedtools`-specific documentation, possibly followed by an example.
Finally, the `BEDTools` help is copied verbatim from whatever version was
installed when generating these docs.
In general the `BEDTool` wrapper methods adhere to the :ref:`Design principles`:
* :ref:`temp principle`
* :ref:`similarity principle`
* :ref:`version principle`
* :ref:`default args principle`
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.intersect
pybedtools.bedtool.BedTool.window
pybedtools.bedtool.BedTool.closest
pybedtools.bedtool.BedTool.coverage
pybedtools.bedtool.BedTool.map
pybedtools.bedtool.BedTool.genome_coverage
pybedtools.bedtool.BedTool.merge
pybedtools.bedtool.BedTool.cluster
pybedtools.bedtool.BedTool.complement
pybedtools.bedtool.BedTool.subtract
pybedtools.bedtool.BedTool.slop
pybedtools.bedtool.BedTool.flank
pybedtools.bedtool.BedTool.sort
pybedtools.bedtool.BedTool.random
pybedtools.bedtool.BedTool.shuffle
pybedtools.bedtool.BedTool.annotate
pybedtools.bedtool.BedTool.multi_intersect
pybedtools.bedtool.BedTool.union_bedgraphs
pybedtools.bedtool.BedTool.pair_to_bed
pybedtools.bedtool.BedTool.pair_to_pair
pybedtools.bedtool.BedTool.bam_to_bed
pybedtools.bedtool.BedTool.to_bam
pybedtools.bedtool.BedTool.bedpe_to_bam
pybedtools.bedtool.BedTool.bed6
pybedtools.bedtool.BedTool.bam_to_fastq
pybedtools.bedtool.BedTool.sequence
pybedtools.bedtool.BedTool.mask_fasta
pybedtools.bedtool.BedTool.nucleotide_content
pybedtools.bedtool.BedTool.multi_bam_coverage
pybedtools.bedtool.BedTool.tag_bam
pybedtools.bedtool.BedTool.jaccard
pybedtools.bedtool.BedTool.reldist
pybedtools.bedtool.BedTool.overlap
pybedtools.bedtool.BedTool.links
pybedtools.bedtool.BedTool.igv
pybedtools.bedtool.BedTool.window_maker
pybedtools.bedtool.BedTool.groupby
pybedtools.bedtool.BedTool.expand
Other :class:`BedTool` methods
------------------------------
These methods are some of the ways in which :mod:`pybedtools` extend the
BEDTools suite.
Feature-by-feature operations
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Methods that operate on a feature-by-feature basis to modify or filter features
on the fly.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.each
pybedtools.bedtool.BedTool.filter
pybedtools.bedtool.BedTool.split
pybedtools.bedtool.BedTool.truncate_to_chrom
pybedtools.bedtool.BedTool.remove_invalid
The :mod:`pybedtools.featurefuncs` module contains some commonly-used functions
that can be passed to :meth:`BedTool.each`:
.. currentmodule:: pybedtools
.. autosummary::
:toctree:
pybedtools.featurefuncs.three_prime
pybedtools.featurefuncs.five_prime
pybedtools.featurefuncs.TSS
pybedtools.featurefuncs.extend_fields
pybedtools.featurefuncs.center
pybedtools.featurefuncs.midpoint
pybedtools.featurefuncs.normalized_to_length
pybedtools.featurefuncs.rename
pybedtools.featurefuncs.greater_than
pybedtools.featurefuncs.less_than
pybedtools.featurefuncs.normalized_to_length
pybedtools.featurefuncs.rename
pybedtools.featurefuncs.bedgraph_scale
pybedtools.featurefuncs.add_color
pybedtools.featurefuncs.gff2bed
pybedtools.featurefuncs.bed2gff
Searching for features
~~~~~~~~~~~~~~~~~~~~~~
These methods take a single interval as input and return the intervals of the
BedTool that overlap.
This can be useful when searching across many BED files for a particular
coordinate range -- for example, they can be used identify all binding sites,
stored in many different BED files, that fall within a gene's coordinates.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.all_hits
pybedtools.bedtool.BedTool.any_hits
pybedtools.bedtool.BedTool.count_hits
pybedtools.bedtool.BedTool.tabix_intervals
pybedtools.bedtool.BedTool.tabix
pybedtools.bedtool.BedTool.bgzip
:class:`BedTool` introspection
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
These methods provide information on the :class:`BedTool` object.
If using :meth:`BedTool.head`, don't forget that you can index into
:class:`BedTool` objects, too.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.head
pybedtools.bedtool.BedTool.count
pybedtools.bedtool.BedTool.field_count
pybedtools.bedtool.BedTool.file_type
Randomization helpers
~~~~~~~~~~~~~~~~~~~~~
Helper methods useful for assessing empirical instersection
distributions between interval files.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.parallel_apply
pybedtools.bedtool.BedTool.randomstats
pybedtools.bedtool.BedTool.randomintersection
pybedtools.bedtool.BedTool.randomintersection_bp
pybedtools.bedtool.BedTool.random_subset
pybedtools.bedtool.BedTool.random_jaccard
pybedtools.bedtool.BedTool.random_op
Managing :class:`BedTool` objects on disk
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
These methods are used to specify where to save results from :class:`BedTool`
operations.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.saveas
pybedtools.bedtool.BedTool.moveto
Misc operations
~~~~~~~~~~~~~~~
Methods that can't quite be categorized into the above sections.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.BedTool.cat
pybedtools.bedtool.BedTool.at
pybedtools.bedtool.BedTool.absolute_distance
pybedtools.bedtool.BedTool.cut
pybedtools.bedtool.BedTool.total_coverage
pybedtools.bedtool.BedTool.with_attrs
pybedtools.bedtool.BedTool.as_intervalfile
pybedtools.bedtool.BedTool.introns
pybedtools.bedtool.BedTool.set_chromsizes
pybedtools.bedtool.BedTool.print_sequence
pybedtools.bedtool.BedTool.save_seqs
pybedtools.bedtool.BedTool.seq
pybedtools.bedtool.BedTool.liftover
pybedtools.bedtool.BedTool.colormap_normalize
pybedtools.bedtool.BedTool.relative_distance
Module-level functions
----------------------
Working with example files
~~~~~~~~~~~~~~~~~~~~~~~~~~
:mod:`pybedtools` comes with many example files. Here are some useful
functions for accessing them.
.. autosummary::
:toctree: autodocs
pybedtools.bedtool.example_bedtool
pybedtools.filenames.list_example_files
pybedtools.filenames.example_filename
Creating :class:`Interval` objects from scratch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:class:`Interval` objects are the core object in :mod:`pybedtools` to represent
a genomic interval, written in Cython for speed.
.. autosummary::
:toctree: autodocs
pybedtools.cbedtools.Interval
pybedtools.cbedtools.create_interval_from_list
:mod:`pybedtools` setup and config
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Use these functions right after importing in order to use custom paths or to
clean up the temp directory.
.. autosummary::
:toctree: autodocs
pybedtools.helpers.set_bedtools_path
pybedtools.helpers.get_tempdir
pybedtools.helpers.set_tempdir
pybedtools.helpers.cleanup
pybedtools.debug_mode
Working with "chromsizes" or assembly coordinate files
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Many `BEDTools` programs need "genome files" or "chromsizes" files so as to
remain within the coordinates of the assembly you're working on. These
functions help manage these files.
.. autosummary::
:toctree: autodocs
pybedtools.helpers.get_chromsizes_from_ucsc
pybedtools.helpers.chromsizes
pybedtools.helpers.chromsizes_to_file
Performing operations in parallel (multiprocessing)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. autosummary::
:toctree: autodocs
pybedtools.parallel.parallel_apply
:mod:`pybedtools.contrib`
-------------------------
The :mod:`pybedtools.contrib` module contains higher-level code that leverages
:class:`BedTool` objects for common analyses.
Plotting
~~~~~~~~
Plotting results from BEDTools/pybedtools operations is very useful for
exploring and understanding the tools as well as for teaching purposes.
.. autosummary::
:toctree: autodocs
pybedtools.contrib.plotting.Track
pybedtools.contrib.plotting.TrackCollection
pybedtools.contrib.plotting.binary_heatmap
pybedtools.contrib.plotting.binary_summary
pybedtools.contrib.plotting.BedToolsDemo
pybedtools.contrib.plotting.ConfiguredBedToolsDemo
Working with bigWig files
~~~~~~~~~~~~~~~~~~~~~~~~~
At this time, :mod:`pybedtools` does not support reading bigWig files, only
creating them via UCSC utilities.
.. autosummary::
:toctree: autodocs
pybedtools.contrib.bigwig.bam_to_bigwig
pybedtools.contrib.bigwig.bedgraph_to_bigwig
pybedtools.contrib.bigwig.wig_to_bigwig
Working with bigBed files
~~~~~~~~~~~~~~~~~~~~~~~~~
.. autosummary::
:toctree: autodocs
pybedtools.contrib.bigbed.bigbed
pybedtools.contrib.bigbed.bigbed_to_bed
:class:`IntersectionMatrix`
~~~~~~~~~~~~~~~~~~~~~~~~~~~
The :class:`IntersectionMatrix` class makes it easy to intersect a large number
of interval files with each other.
.. autosummary::
:toctree: autodocs
pybedtools.contrib.IntersectionMatrix
:mod:`contrib.venn_maker`
~~~~~~~~~~~~~~~~~~~~~~~~~
The :mod:`venn_maker` module helps you make Venn diagrams using the R package
`VennDiagram `_.
Note that Venn diagrams are not good for when you have nested intersections.
See the docs for :func:`pybedtools.contrib.venn_maker.cleaned_intersect` and
its source for more details.
.. autosummary::
:toctree: autodocs
pybedtools.contrib.venn_maker
pybedtools.contrib.venn_maker.venn_maker
pybedtools.contrib.venn_maker.cleaned_intersect
:mod:`contrib.long_range_interaction`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. autosummary::
:toctree: autodocs
pybedtools.contrib.long_range_interaction.tag_bedpe
pybedtools.contrib.long_range_interaction.cis_trans_interactions
pybedtools-0.9.0/docs/source/autodocs/ 0000775 0000000 0000000 00000000000 14173526301 0017757 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/source/autodocs/pybedtools.contrib.plotting.Track.rst 0000664 0000000 0000000 00000007035 14173526301 0027243 0 ustar 00root root 0000000 0000000 pybedtools.contrib.plotting.Track
=================================
.. currentmodule:: pybedtools.contrib.plotting
.. autoclass:: Track
.. automethod:: __init__
.. rubric:: Methods
.. autosummary::
~Track.__init__
~Track.add_callback
~Track.add_checker
~Track.autoscale
~Track.autoscale_None
~Track.changed
~Track.check_update
~Track.contains
~Track.convert_xunits
~Track.convert_yunits
~Track.draw
~Track.findobj
~Track.format_cursor_data
~Track.get_agg_filter
~Track.get_alpha
~Track.get_animated
~Track.get_array
~Track.get_capstyle
~Track.get_children
~Track.get_clim
~Track.get_clip_box
~Track.get_clip_on
~Track.get_clip_path
~Track.get_cmap
~Track.get_contains
~Track.get_cursor_data
~Track.get_dashes
~Track.get_datalim
~Track.get_edgecolor
~Track.get_edgecolors
~Track.get_facecolor
~Track.get_facecolors
~Track.get_figure
~Track.get_fill
~Track.get_gid
~Track.get_hatch
~Track.get_joinstyle
~Track.get_label
~Track.get_linestyle
~Track.get_linestyles
~Track.get_linewidth
~Track.get_linewidths
~Track.get_offset_position
~Track.get_offset_transform
~Track.get_offsets
~Track.get_path_effects
~Track.get_paths
~Track.get_picker
~Track.get_pickradius
~Track.get_rasterized
~Track.get_sizes
~Track.get_sketch_params
~Track.get_snap
~Track.get_transform
~Track.get_transformed_clip_path_and_affine
~Track.get_transforms
~Track.get_url
~Track.get_urls
~Track.get_visible
~Track.get_window_extent
~Track.get_xlims
~Track.get_zorder
~Track.have_units
~Track.hitlist
~Track.is_figure_set
~Track.is_transform_set
~Track.pchanged
~Track.pick
~Track.pickable
~Track.properties
~Track.remove
~Track.remove_callback
~Track.set
~Track.set_agg_filter
~Track.set_alpha
~Track.set_animated
~Track.set_antialiased
~Track.set_antialiaseds
~Track.set_array
~Track.set_capstyle
~Track.set_clim
~Track.set_clip_box
~Track.set_clip_on
~Track.set_clip_path
~Track.set_cmap
~Track.set_color
~Track.set_contains
~Track.set_dashes
~Track.set_edgecolor
~Track.set_edgecolors
~Track.set_facecolor
~Track.set_facecolors
~Track.set_figure
~Track.set_gid
~Track.set_hatch
~Track.set_joinstyle
~Track.set_label
~Track.set_linestyle
~Track.set_linestyles
~Track.set_linewidth
~Track.set_linewidths
~Track.set_lw
~Track.set_norm
~Track.set_offset_position
~Track.set_offsets
~Track.set_path_effects
~Track.set_paths
~Track.set_picker
~Track.set_pickradius
~Track.set_rasterized
~Track.set_sizes
~Track.set_sketch_params
~Track.set_snap
~Track.set_transform
~Track.set_url
~Track.set_urls
~Track.set_verts
~Track.set_verts_and_codes
~Track.set_visible
~Track.set_zorder
~Track.to_rgba
~Track.update
~Track.update_from
~Track.update_scalarmappable
.. rubric:: Attributes
.. autosummary::
~Track.aname
~Track.axes
~Track.midpoint
~Track.mouseover
~Track.stale
~Track.sticky_edges
~Track.zorder
pybedtools-0.9.0/docs/source/changes.rst 0000664 0000000 0000000 00000076632 14173526301 0020316 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
Changelog
=========
Changes in v0.9
---------------
2022-01-23
The biggest change is that pybedtools is now under the MIT license, following
the lead of BEDTools itself.
Bugfixes:
* Bugfix: `Interval` objects representing VCF lines now have their `start`
attribute correctly zero-based, as indicated in the docs and consistent with
other 1-based formats. See `#355 `_.
* Bugfix: Manually creating `Interval` objects using the `otherfields` argument
now correctly converts to C++ strings. See `#348
`_.
* Bugfix: Workaround for `BedTool.intersect` which in some versions of BEDTools
requires a specific order of arguments. Fixes `#345
`_ and also is a better way
of addressing `#81 `_.
Code cleanup:
* Removed some remnants of Python 2.7 support (thanks @DavidCain)
* Updates to setup.py classifiers to better reflect state of code (thanks @DavidCain)
* Sorted filenames in setup.py to improve reproducibility of build (thanks @lamby)
* Tests converted to run on GitHub Actions (see `#339
`_).
Changes in v0.8.2
-----------------
2021-03-13: Minor updates
* Removed scripts directory from installed version. These are still available
in the GitHub repo, but were causing import issues with Python 3.9 and were
not well-used in the first place.
* Bugfix: unicode is better handled in gzipped files (thanks @naumenko-sa, see
`#320 `_)
* Bugfix: correctly ignore warnings even with capital letters (thanks
@JureZmrzlikar, see `#326 `_)
* Bugfix/improvements: update tests and code to work with Python 3.8 (see `#324
`_). Also addresses `#322
`_.
* Improvement: updates tests to work with bedtools v2.30
* Improvement: integration of `genomepy
`_, which if installed will
help retrieve chromsizes files for less commonly used assemblies (thanks
@simonvh, see `#323 `_)
Changes in v0.8.1
-----------------
2019-12-27: This version has minor updates and bugfixes:
* Bugfix: Fixes to `pbt_plotting_example.py` (thanks Steffen Möllera @smoe)
* Bugfix: Using `BedTool.saveas()` when a BedTool already points to a compressed file
correctly saves (`#308 `_)
* Improvement: Deprecate `pandas.read_table` (thanks André F. Rendeiro
@afrendeiro)
* Improvement: overhaul testing on travis-ci
* Improvement: BedTool objects support either strings or Path objects (`#287
`_, thanks @drchsl)
* Improvement: MySQL host can be configured (`#301
`_, thanks André F. Rendeiro
@afrendeiro)
* Improvement: Better version string parsing (`#289
`_, thanks Steffen Möllera
@smoe), fixes `#275 `_ and others.
* Improvement: Proper CRAM support: `#307 `_
* Improvement: Raise an exception when the `-b` argument to `BedTool.intersect` has more
than 510 files (`#303 `_)
* `*.h` files now included in the distribution (thanks @blaiseli)
* Improvement: Update tests to work with bedtools v2.29.2
Changes in v0.8.0
-----------------
This version further improves testing, improves the way C++ files are included
in the package, and fixes many long-standing bugs.
* Using pytest framework rather than nose for testing
* Updated `setup.py` to be more robust and to more clearly separate
"cythonization" into .cpp files
* Updated test harness for testing in independent conda environments
* All issue tests go in their own test module
* Included Python 3.7 tests (note that at the time of this writing, pysam is
not yet available on bioconda so that dependency is pip-installed in the
test) (`#254 `_)
* Updated tests to reflect BEDTool 2.27.1 output (`#260
`_`#261
`_)
* Removed the `contrib.classifier` module, which has been unsupported for
a while.
* More informative error messages for UCSC tools if they're missing (`#227
`_)
* BedTool objects that are the result of operations that create files that are
not BED/GTF/GFF/BAM can be more easily converted to pandas.DataFrame with
`disable_auto_names=True` arg to `BedTool.to_dataframe()` (`#258
`_)
* Added aliases to existing methods to match current BEDTools commands, e.g.
the `BedTool.nucleotide_content` method can now also be called using
`BedTool.nuc` which is consistent with the `bedtools nuc` command line name.
* New wrapper for `bedtools split`. The wrapper method is called `splitbed` to
maintain backwards compatibility because `pybedtools.BedTool` objects have
long had a `split` method that splits intervals based on a custom function.
* New wrapper for `bedtools spacing`.
* `BedTool.from_dataframe` handles NaN in dataframes by replacing with `"."`,
and is more explicit about kwargs that are passed to `pandas.DataFrame`
(`#257 `_)
* Raise FileNotFoundError when on Python 3 (thanks Gosuke Shibahara, (`#255
`_)
* Relocated BEDTools header and .cpp files to the `pybedtools/include`
directory, so they can more easily be linked to from external packages
(`#253 `_)
* Add test for (`#118 `_)
* `BedTool.tabix_contigs` will list the sequence names indexed by tabix
(`#180 `_)
* `BedTool.tabix_intervals` will return an empty generator if the coordinates
provided are not indexed, unless `check_coordinates=True` in which case the
previous behavior of raising a ValueError is triggered (`#181
`_)
* Bugfix: Avoid "ResourceWarning: unclosed file" in `helpers.isBGZIP` (thanks
Stephen Bush)
* Bugfix: Interval objects created directly no longer have their filetype set
to None (`#217 `_)
* Bugfix: Fixed the ability to set paths and reload module afterwards (`#218
`_, `#220
`_, `#222
`_)
* Bugfix: `BedTool.head()` no longer uses an IntervalIterator (which would
check to make sure lines are valid BED/GTF/GFF/BAM/SAM). Instead, it simply
prints the first lines of the underlying file.
* Bugfix: functions passed to `BedTool.filter` and `BedTool.each` no longer
silently pass ValueErrors (`#231
`_)
* Bugfix: Fixed IndexError in IntervalIterator if there was an empty line (`#233
`_)
* Bugfix: Add additional constraint to SAM file detection to avoid incorrectly
detecting a BED file as SAM (`#246
`_)
* Bugfix: accessing Interval.fields after accessing Interval.attrs no longer
raises ValueError (`#246 `_)
Changes in v0.7.10
------------------
Various bug fixes and some minor feature additions:
* Support for comma-separated lists for `mapBed` (thanks Chuan-Sheng Foo)
* Support many calls to `tabix_intervals` without hitting a "Too many open
files" error (`#190 `_)
* Clarify documentation for `genome_coverage` when used with default
parameters (`#113 `_)
* Ignore stderr from samtools on older zlib versions (`#209 `_, thanks Gert Hulselmans)
* Support fetching all regions from a chromosome (`#201 `_, thanks Matt Stone)
* Add wrapper for `shiftBed` (`#200 `_, thanks Saket Choudhary)
* Fix `truncate_to_chrom` in Python 3 (`#203 `_, thanks Saulius Lukauskas)
* When making bigWigs, use `bedSort` to ensure the sort order matches that expected by UCSC tools (`#178 `_)
* Fix newline handling of `pysam.ctabix.TabixIterator` output (`#196 `_)
Changes in v0.7.9
-----------------
Minor bugfix release:
* add `contrib.bigwig.bigwigtobedgraph` (thanks Justin Fear)
* fix `BedTool.seq()` in Python 3
* fix intron creation (`#182 `_, thanks @mmendez12)
* add `six` as an explicit requirement (`#184 `_, thanks @jrdemasi)
* improvements to setup (``_)
* make pandas fully optional
Changes in v0.7.8
-----------------
* Be more careful about BAM vs bgzipped files (#168)
* `BedTool.bgzip` now preserves the header when sorting
* In Python 3, parsed BEDTools help string is decoded properly
* Ensure integer number of processes in Python 3 (thanks Illa Shamovsky)
* Add details on IOError messages for broken pipe error
* Make converting to pandas.DataFrames easier with non-standard BED files (thanks Panos Firmpas)
Changes in v0.7.7
-----------------
* Chromsizes for dm6 and mm10 assemblies added to `genome_registry`
* Better Python 3 compatibility in the `long_range_interaction` module
* New `featurefuncs.UniqueID` class, useful for ensuring all features in a file
have a unique ID in their name field.
* Fix error message when a specified genome file doesn't exist (thanks Saket Choudhary)
Changes in v0.7.6
-----------------
* New module `pybedtools.contrib.long_range_interaction` for working with
HiC-like data.
Changes in v0.7.5
-----------------
* When using tabix-indexed files, `tabix` and `bgzip` are no longer required to
be installed separately. Only `pysam` is needed.
* Recent BEDTools releases support multiple files for the `-b` argument of
`bedtools intersect`. This version of `pybedtools` now supports multiple
files as well. Note that it is still possible to provide a list of strings
representing intervals as the `b` argument to `BedTool.intersect`. To
differentiate between a list of intervals and a list of filenames, the first
item converted into an `Interval` object; if it fails then consider the items
to be filenames; otherwise assume strings representing intervals. This check
only occurs if the `b` argument is a list or tuple; other iterable types are
always assumed to be intervals.
Changes in v0.7.4
-----------------
Bugfix release.
- fix `#147 `_ so that warnings
are simply passed to the user without raising exceptions
- in setup.py, allow depedencies to have "loose" versions with suffixes like
"rc1"
- fix in `BedTool.cat()` on empty files (thanks Brad Chapman (`PR #149
`_)
Changes in v0.7.1
-----------------
This is largely a bugfix release with the following changes:
- fix for some BAM headers (thanks Gabriel Platt)
- unified IntervalIterator to address some streaming issues (fixes #143)
- fix bug where `__add__` was not re-raising exceptions (thanks Brad Chapman
and Dan Halligan)
Changes in v0.7.0
-----------------
This release reflects a major upgrade in the underlying code in order to
support both Python 2 and Python 3 using the same code. Aside from trivial
things like converting print statements to functions and using `next()` instead
of `.next()`, this required a substantial rewrite to support the way strings
are handled in Python 3 (in Cython and wrapped C++) and how relative modules
work.
Importantly, after converting them to Python 2- and 3-compatible syntax *all
previous tests pass* so to the end user should not notice any differences
except those noted below.
Strings from Interval fields are unicode
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
For consistency between Python 2 and 3, all strings from Interval objects are
now unicode. That is, in Python 2, previously we would get this::
>>> a = pybedtools.example_bedtool('a.bed')
>>> a[0].name
'feature1'
Now, we get this::
>>> a = pybedtools.example_bedtool('a.bed')
>>> a[0].name
u'feature1'
samtools no longer a dependency
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The dependency for samtools has been removed, which simplifies the installation
process. Instead, `pysam` is used for handling BAM files.
In order for existing tests to pass, `pysam.AlignedSegment` objects are
currently converted to `pybedtools.Interval` objects when iterating over a BAM
file. This will come at a performance cost if you are iterating over all reads
in a BAM file using the `pybedtools.BAM` object.
In the future, iterating over a BAM file will yield `pysam.AlignedSegment`
objects directly, but for now you can use the `pybedtools.BAM.pysam_bamfile`
attribute to access the underlying `pysam.AlignmentFile`
Cython no longer a dependency
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The Cythonized ``.cxx`` files are now shipped with the `pybedtools`
distribution, so Cython is no longer a requirement for installation.
You will however need to have Cython installed if you're developing pybedtools.
Remote BAM support clarification
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Previously, `pybedtools` was able to support remote BAMs by loosely wrapping
samtools, but BAM files still needed to be fully downloaded to disk before
using with BEDTools. This was done automatically, but through an inefficient
mechanism.
Pysam does support remote BAMs, and as before, a BAM file needs to be created
on disk for use with BEDTools. But now this needs to be explicitly done by the
user, which should result in better performance.
Iterating over intervals
~~~~~~~~~~~~~~~~~~~~~~~~
Previously, when iterating over a `BedTool` object, different machinery would
be invoked depending on whether the BedTool was pointing to a file (a
cbedtools.IntervalFile would be invoked), to another iterator of Interval
objects, or to a stream like from the stdout of a BEDTools call
(cbedtools.IntervalIterator in both cases).
Everything is now an IntervalIterator, simplifying the path towards
performance optimization.
gzip support
~~~~~~~~~~~~
Thanks to Saulius Lukauskas, gzip handling is now improved, and calling
`BedTool.saveas()` with a `.gz` extension on the filename will automatically
compress the output.
Docker
~~~~~~
In the github repo there is a `docker` directory containing Dockerfiles to set
up isolated testing environments. These Dockerfiles also demonstrate how to set
up a complete environment starting from a base Ubuntu install.
Tests
~~~~~
All tests from v0.6.9 (which was Python 2 only) have been made Python 2/3
compatible and all previous tests pass.
If you have docker installed, from the top level directory, you can run the
full tests like this::
cd docker
./full-tests.sh
This will build docker containers for Python 2 and Python 3 with all
depedencies, export the parent directory to the container, and run the test
suite.
Conda packages
~~~~~~~~~~~~~~
You can now install the latest versions of tabix, bedtools, pysam, and
pybedtools from conda, dramatically speeding up installation time. These
mechanisms are used for automated testing as well (see the ``condatest.sh``
script in the github repo).
To use these packages in your own environment(s), specify the `daler` conda
channel like this::
conda install -c daler pybedtools
Note that this will not install BEDTools or tabix unless you explicitly say
so::
conda install -c daler pybedtools bedtools tabix
.. note::
This currently only works on Linux; contributions to Mac conda recipes (see
the `conda` dir in the github repo) would be welcomed.
Changes in v0.6.9
-----------------
Minor bug fix release.
* improved the automatic field name handling when converting an interval file to
a `pandas DataFrame`.
* fixed a bug in `IntervalFile` methods `all_hits`, `any_hits` and `count_hits`
where zero-length features were being counted multiple times (thanks Brent
Pedersen and Kyle Smith)
* bgzip and tabix paths can now be configured separately (thanks Rob Beagrie)
* fixed a bug where streaming BAM files were read fully into memory (thanks
Alexey Sergushichev)
Changes in v0.6.8
-----------------
Bugfix: Thanks to Gabriel Pratt, `pybedtools` is no longer plagued by open filehandles
in the C code causing the notorious "Too many files open" error.
Changes in v0.6.7
-----------------
Now compatible with BEDTools v2.21.0.
The one exception is that the new `bedtools intersect` functionality that
allows multiple `-b` files is not yet implemented in `pybedtools`.
New features:
* `BedTool.fisher()` wraps the new BEDTools `fisher` tool. The result is
an object containing parsed results.
* `BedTool.colormap_normalize()` accepts a `percentile` argument, useful when
applying colormaps to data with a handful of extreme outliers
* `BedTool.to_datafame()` converts a `BedTool` object into a `pandas.DataFrame`
with columns named after the appropriate fields for the filetype (thanks
Radhouane Aniba for the suggestion)
* `BedTool.tail()` to complement `BedTool.head()` (thanks Radhouane Aniba for
the suggestion)
* Add hg38 and hg38.default chromsizes
Minor bug fixes:
* Ensure tuple-like args to `parallel_apply` (fixes #109)
* Temp fix for BEDTools v2.20.0 which required the `-w` arg to come before the
`-s` arg in `bedtools makewindows` (#81)
* Better (i.e., UCSC Genome Browser-compliant) defaults for `featurefuncs.expand_fields`.
* Fix for BedTool.all_hits() and any_hits() which will now show hits for
zero-length features intersecting with other zero-length features with the
same coordinates.
Changes in v0.6.6
-----------------
This is a compatibility release, updated for BEDTools v2.20.0.
There is one API change that affects the behavior of overloaded operators (that
is, using `+` and `-` with BedTool objects) when one of the BedTool objects
represents an empty file.
Assume `a` is a BedTool object representing a regular BED file but `b` is
empty. Previously:
* a + b = a
* b + a = b
* a - b = a
* b - a = a
* b - b = b
* a + a = a
The following changes have been made (indicated in **bold**), which hopefully
make more logical sense:
* **a + b = b**
* b + a = b
* a - b = a
* **b - a = b**
* b - b = b
* a + a = a
Changes in v0.6.5
-----------------
This is a minor bug-fix release:
* Fix for BedTool.all_hits() and any_hits() which will now show hits for
zero-length features with the same coordinates, like the rest of BEDTools.
* Improved error-handling to avoid Python interpreter crashing in cases when
a BED file on the filesystem becomes unavailable after a BedTool object has
been created for it.
Changes in v0.6.4
-----------------
* Full integration with BEDTools v2.18. This includes some compatibility fixes
for the new buffered output capabilities of BEDTool `intersect` and wrapping
the new `bedtools sample` tool.
* Overloaded operators (`+` and `-`) allow empty files as input, even using
BEDTools v2.18+.
* Travis-CI builds now use BEDTools v2.18+ for tests.
* Fix for :func:`pybedtools.featurefuncs.midpoint` (thanks ny-shao)
* Fix to :meth:`BedTool.randomstats` (thanks Michael Reschen)
Changes in v0.6.3
-----------------
* New :mod:`pybedtools.parallel` module for working with many operations in
parallel. See the docs for :func:`pybedtools.parallel.parallel_apply` for
details.
* :func:`pybedtools.contrib.bigbed.bigbed` for converting to bigBed format,
along with auto-SQL creation as needed.
* New function :func:`pybedtools.contrib.bigbed.bigbed_to_bed`, so now bigBed
-> BED and BED -> bigBed interconversions are trivial.
* Support for remote BAMs by passing `remote=True` when creating
a :class:`BedTool` object
* New method :meth:`BedTool.at` for subsetting a BedTool by a set of (sorted)
indexes.
* New functions :func:`featurefuncs.gff2bed` and :func:`featurefuncs.bed2gff`
for use with :meth:`BedTool.each`, for easy converting GFF/GTF to BED
* New function :func:`add_color` for applying matplotlib colormaps to BED
files; see also new method :meth:`pybedtools.BedTool.colormap_normalize`.
* :class:`pybedtools.plotting.BinaryHeatmap` class for working with results
from :meth:`BedTool.multi_intersect`.
* :meth:`BedTool.each` now also has some filter capabilities (if provided
function's return value evaluates to False, feature will be skipped)
* Better detection for samtools (thanks Luca Beltrame)
* Expand BEDToolsError (thanks Ryan Layer)
* Creating a BedTool from a list of intervals now saves to temp file instead of treating
like a consume-once iterator (#73)
* Various fixes to keyword arg handling to match semantics of BEDTools.
* Command line help and improved docs for the `peak_pie.py` script.
* Fix to GFF attributes (thanks Libor Mořkovský)
* Fix to labels in :mod:`pybedtools.contrib.venn_maker.py` (thanks Luca
Pinello)
* Make the naive scaling (to million mapped reads) in
:func:`pybedtools.contrib.bigwig.bam_to_bigwiq` optional.
* Fix for :meth:`BedTool.cat` to handle cases where at least one input is an
empty file
* Removed SciPy dependency
* Every commit is built with Travis-CI for continuous integration testing of
changes to source code.
Changes in v0.6.2
-----------------
* Wrapped new tools available in BEDTools 2.17: :meth:`BedTool.jaccard` and
:meth:`BedTool.reldist` wrap the new `bedtools jaccard` and `bedtools
reldist` respectively.
* Initial implementations of building blocks for computing statistics,
:meth:`BedTool.absolute_distance` and :meth:`BedTool.relative_distance`
* :func:`pybedtools.featurefuncs.three_prime`,
:func:`pybedtools.featurefuncs.five_prime`, and
:func:`pybedtools.featurefuncs.TSS` modifier functions that can be passed to
:meth:`BedTool.each`
* :func:`pybedtools.contrib.plotting.binary_heatmap` for visualizing results
from :meth:`BedTool.multi_intersect`
* Fixed a long-standing issue where streaming :class:`BedTool` objects did not
close their open file handles (stdout). When working with many (i.e. tens
of thousands) files, this caused the operating system to hit its open file
limit. This is now fixed.
* :meth:`BedTool.random_op`, a new mechanism for implementing operations that
you would like to apply over tens of thousands of shuffled interval files.
This makes it easy to extend the existing :mod:`pybedtools` multiprocessing
functionality.
* :func:`pybedtools.contrib.bigwig.bam_to_bigwig`, a helper function to create
a libary-size-scaled bigWig file from an input BAM file.
* :class:`pybedtools.contrib.plotting.TrackCollection` class, which handles
plotting multiple files at once, using a provided "stylesheet" configuration
to tweak colors etc.
* :class:`pybedtools.contrib.plotting.BedToolsDemo` and
:class:`pybedtools.contrib.plotting.ConfiguredBedToolsDemo`, useful for
running many graphical demos of BEDTools operations using the same
"stylesheet" configuration. Run :file:`pybedtools/contrib/plotting.py` for
a demo.
* chromsizes dictionaries for common assemblies now have a `default` attribute,
which is an OrderedDict of a default set of chromosome. For example,
``pybedtools.chromsizes('hg19').default`` contains only the entries for the
autosomes and X and Y.
* :meth:`BedTool.cat` now works better with multiprocessing
* added `include_distribution` kwarg to :meth:`BedTool.randomstats`, which will
attach the full distribution of all the randomized files to the results
dictionary.
* New method implementing Jaccard statistic (with pvalue using randomizations):
:meth:`BedTool.random_jaccard`
* :func:`featurefuncs.extend_fields` helper function to pad fields with `'.'`,
useful for manipulating features with the :meth:`BedTool.each` method
* Fixed a bug where BAM files, when written to disk via :meth:`BedTool.saveas`,
were saved as SAM files.
* Better GTF/GFF detection, and if the input had quoted attribute values, then
the output will, too
* various minor bug fixes and improvments as documented in the github commit
logs....
Changes in v0.6.1
-----------------
* New :class:`pybedtools.contrib.plotting.Track` class allows plotting of
features with matplotlib. The `Track` class subclasses
`matplotlib.collections.PolyCollection`, making it rather fast for 1000s of
features.
* See the `scripts/pbt_plotting_example.py` script for a way of visually showing
the results of BEDTools operations . . . great for teaching BEDTools to new
users.
* New :meth:`BedTool.liftover` method (needs a chain file from UCSC and the
`liftover` program installed)
* :class:`BedTool` creation using tuples/lists of values -- everything is
converted to string before creating an :class:`Interval` object.
* bugfix: :meth:`BedTool.window_maker` now handles the `genome` kwarg correctly
* bugfix: `pybedtools.cleanup(remove_all=True)` now works correctly when using
the default temp dir
Changes in v0.6
---------------
* Overhaul in online documentation to hopefully make functionality easier to
find and/or discover. See :ref:`pybedtools reference` for summary tables of
the different parts of :mod:`pybedtools`; each entry is linked to further
class/method/function-specific docs. These more detailed docs also have
links to view the source code from within the HTML docs for more exploration.
* :func:`pybedtools.contrib.venn_maker` function that acts as an interface to
the VennDiagram R package -- just give it some BED files and it'll do the
rest.
* Debug mode -- :func:`pybedtools.debug_mode` -- for verbose logging messages.
* Fixed an open file leak (OSError: too many open files) that occured when
opening thousands of streaming bed files in a single session.
* Initial support for tabix files. Useful for extracting features from
a single region when you don't need a full intersection.
* New :mod:`pybedtools.contrib` module (in the spirit of Django's `contrib`)
where higher-level functionality will be built.
* :class:`pybedtools.contrib.Classifier` class for identifying the classes of
intervals. Useful for making pie charts of intronic/exonic/intergenic etc
classes of peaks. Note that this is somewhat redundant with the new `mapBed`
program in BEDTools.
* Experimental :class:`pybedtools.contrib.IntersectionMatrix` class for
handling pairwise intersections of a large number of interval files --
including a local sqlite3 database to avoid re-computing already up-to-date
results.
* :class:`Interval` objects are now hashable (it's just a hash of the string
representation) so that you can use them as dictionary keys.
* :meth:`BedTool.split` method, which accepts a function returning an iterable
of :class:`Interval` objects. The function is applied to each interval.
Useful for, say, splitting each gene into TSS, TTS, upstream and downstream
features.
* :meth:`BedTool.truncate_to_chrom` method, which truncates features to the
chromosome sizes of the provided genome. Useful for when you try uploading
a MACS-generated track to the UCSC genome browser, but it complains because
peak boundaries have been extended outside chromosome boundaries . . . this
method fixes the problem.
* :class:`BedTool` objects now have full functionality of :class:`IntervalFile`
objects -- that is, they have the methods :meth:`BedTool.any_hits`,
:meth:`BedTool.all_hits`, and :meth:`BedTool.count_hits` for doing
single-interval tests. Sometimes this will be faster than using the tabix
support, sometimes it won't -- it's best to try both, depending on your data.
* String representations of :class:`Interval` objects now have a newline at the
end, just like a raw lines from a BED/GFF/VCF file. Previously, this was
inconsistent and sometimes led to extra blank lines in "streaming"
:class:`BedTool` instances . . . which in turn led to problems with BEDTools
programs using the chromsweep algorithm.
* Concatentate multiple files with one call to :meth:`BedTool.cat` (thanks Jake
Biesinger)
* Wrapped previous BEDTools programs:
* `unionBedGraphs` (:meth:`BedTool.union_bedgraphs`)
* `pairToBed` (:meth:`BedTool.pair_to_bed`)
* `pairToPair` (:meth:`BedTool.pair_to_pair`)
* `bedpeToBam` (:meth:`BedTool.bedpe_to_bam`)
* Wrapped new BEDTools programs:
* `mapBed` (:meth:`BedTool.map`)
* `clusterBed` (:meth:`BedTool.cluster`)
* `randomBed` (:meth:`BedTool.random`)
* `multiIntersectBed` (:meth:`BedTool.multi_intersect`)
* `expandCols` (:meth:`BedTool.expand`)
* `windowMaker` (:meth:`BedTool.window_maker`)
* `bamToFastq` (:meth:`BedTool.bam_to_fastq`)
* Made venn_gchart and venn_mpl tests more stable
* Automatic documenting of which args are passed implicitly for BedTool method
calls
* More robust mechanisms for specifying custom paths for BEDTools installation
as well as optional tabix, samtools, and R installations. This makes it
easier to explicitly specify which versions of the tools to use.
* Improvements to GFF attributes: handle unescaped "=" (from sim4db GFFs) and
make Attribute class properly dict-like (thanks Libor Mořkovský)
Changes in v0.5.5
-----------------
* Use `additional_args` kwarg to pass arguments verbatim to the underlying
BEDTools programs. This is necessary for arguments like
`genomeCoverageBed`'s `-5` argument, since `5=True` is not a valid Python
expression. For example, you can use::
import pybedtools
a = pybedtools.example_bedtool('a.bed')
a.genome_coverage(bg=True, strand='+', genome='hg19', additional_args='-5')
* Brent Pedersen added support for just 2 BED files in the Venn diagram scripts
* :meth:`BedTool.all_hits` uses the underlying BEDTools C++ API to get all hits
in a file for a particular Interval::
a = pybedtools.example_bedtool('a.bed')
interval = Interval('chr1', 1, 5000)
a.all_hits(interval)
* New semantics for comparisons of Interval objects. Visual documentation of
this coming soon.
* More tests for latest BEDTools code
* Interval instances are now pickleable; they can now be used across processes
for parallel code.
Changes in v0.5
---------------
* support for running random intersections in parallel. See
:meth:`BedTool.randomstats` and :meth:`BedTool.randomintersection` (thanks,
Jake Biesinger)
* Cython `Interval.__copy__()` for compatibility with `copy` module
* `seek()` and `rewind()` methods for `IntervalFile` class, used for Aaron
Quinlan's new chromsweep algorithm (https://github.com/arq5x/chrom_sweep)
(thanks, Aaron)
* support and tests for new BEDTools programs `multiBamCov`, `tagBam`, and `nucBed`
* `output="out.bed"` kwarg for all wrapped methods for explicitly specifying
where to save output -- no more moving tempfiles
* docs improvements:
* direct comparison with a shell script to illustrate benefit of
`pybedtools`; see :ref:`shell_comparison`
* more installation details
* 0- and 1-based coordinates discussed early on (the 3 brief examples page,
:ref:`3examples`)
* development history and open collaboration model (see :ref:`devmodel`)
pybedtools-0.9.0/docs/source/conf.py 0000664 0000000 0000000 00000016756 14173526301 0017454 0 ustar 00root root 0000000 0000000 # -*- coding: utf-8 -*-
#
# pybedtools documentation build configuration file, created by
# sphinx-quickstart on Wed Dec 22 17:39:12 2010.
#
# This file is execfile()d with the current directory set to its containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.
import sys, os
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
sys.path.insert(0, os.path.abspath('../..'))
from pybedtools import __version__ as version
# -- General configuration -----------------------------------------------------
# If your documentation needs a minimal Sphinx version, state it here.
#needs_sphinx = '1.0'
# Add any Sphinx extension module names here, as strings. They can be extensions
# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = ['sphinx.ext.autodoc', 'sphinx.ext.autosummary',
'sphinx.ext.doctest', 'sphinx.ext.todo',
'sphinx.ext.coverage','sphinx.ext.viewcode', 'numpydoc']
doctest_test_doctest_blocks = 'default'
# From http://stackoverflow.com/questions/12206334/\
# sphinx-autosummary-toctree-contains-refere\
# nce-to-nonexisting-document-warnings
numpydoc_show_class_members = False
# this is needed to get the autodoc_source.rst doctests to run
doctest_global_setup = """
from pybedtools import *
import pybedtools
"""
autosummary_generate = True
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# The suffix of source filenames.
source_suffix = '.rst'
# The encoding of source files.
#source_encoding = 'utf-8-sig'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = 'pybedtools'
copyright = '2010-2015, Ryan Dale'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = version
# The full version, including alpha/beta/rc tags.
release = version
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#language = None
# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = []
# The reST default role (used for this markup: `text`) to use for all documents.
default_role = 'file'
# If true, '()' will be appended to :func: etc. cross-reference text.
add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#add_module_names = True
# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#show_authors = False
# The name of the Pygments (syntax highlighting) style to use.
#pygments_style = 'sphinx'
highlight_language = 'python'
html_use_smartypants = False
# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []
# -- Options for HTML output ---------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
#html_theme = 'nature'
# Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the
# documentation.
#html_theme_options = {}
# Add any paths that contain custom themes here, relative to this directory.
#html_theme_path = ['_themes']
# The name for this set of Sphinx documents. If None, it defaults to
# " v documentation".
#html_title = None
# A shorter title for the navigation bar. Default is the same as html_title.
#html_short_title = None
# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
#html_logo = None
# The name of an image file (within the static path) to use as favicon of the
# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
#html_favicon = None
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
html_last_updated_fmt = '%b %d, %Y'
# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#html_use_smartypants = True
# Custom sidebar templates, maps document names to template names.
#html_sidebars = {}
# Additional templates that should be rendered to pages, maps page names to
# template names.
#html_additional_pages = {}
# If false, no module index is generated.
#html_domain_indices = True
# If false, no index is generated.
#html_use_index = True
# If true, the index is split into individual pages for each letter.
#html_split_index = False
# If true, links to the reST sources are added to the pages.
#html_show_sourcelink = True
# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
#html_show_sphinx = True
# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
#html_show_copyright = True
# If true, an OpenSearch description file will be output, and all pages will
# contain a tag referring to it. The value of this option must be the
# base URL from which the finished HTML is served.
#html_use_opensearch = ''
# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
#html_file_suffix = ''
# Output file base name for HTML help builder.
htmlhelp_basename = 'pybedtoolsdoc'
# -- Options for LaTeX output --------------------------------------------------
# The paper size ('letter' or 'a4').
#latex_paper_size = 'letter'
# The font size ('10pt', '11pt' or '12pt').
#latex_font_size = '10pt'
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass [howto/manual]).
latex_documents = [
('index', 'pybedtools.tex', 'pybedtools Documentation',
'Ryan Dale', 'manual'),
]
# The name of an image file (relative to this directory) to place at the top of
# the title page.
#latex_logo = None
# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
latex_use_parts = True
# If true, show page references after internal links.
#latex_show_pagerefs = False
# If true, show URL addresses after external links.
#latex_show_urls = False
# Additional stuff for the LaTeX preamble.
#latex_preamble = ''
# Documents to append as an appendix to all manuals.
#latex_appendices = []
# If false, no module index is generated.
#latex_domain_indices = True
# -- Options for manual page output --------------------------------------------
# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
('index', 'pybedtools', 'pybedtools Documentation',
['Ryan Dale'], 1)
]
pybedtools-0.9.0/docs/source/create-a-bedtool-tutorial.rst 0000664 0000000 0000000 00000003337 14173526301 0023646 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
Create a :class:`BedTool`
-------------------------
First, follow the :ref:`installation` instructions if you haven't already
done so to install both BEDTools_ and :mod:`pybedtools`.
Then import the :mod:`pybedtools` module and make a new :class:`BedTool`. A
:class:`BedTool` object encapsulates all of the available BEDTools programs and
makes them easier to use within Python. Most of the time when working with
:mod:`pybedtools` you'll be using :class:`BedTool` objects. In general, a
single :class:`BedTool` object points to an interval file (BED, GFF, GTF, VCF,
SAM, or BAM format).
::
>>> import pybedtools
>>> # use a BED file that ships with pybedtools...
>>> a = pybedtools.example_bedtool('a.bed')
>>> # ...or use your own by passing a filename
>>> a = pybedtools.BedTool('peaks.bed')
This documentation uses example files that ship with :mod:`pybedtools`. To
access these files from their installation location, we use the
:func:`example_bedtool` function. This is convenient because if you copy-paste
the examples, they will work. When using the :func:`example_bedtool` function,
the resulting :class:`BedTool` object will point to the corresponding file in
the `test/data` directory of your :mod:`pybedtools` installation. If you would
rather learn using your own files, just pass the filename to a new
:class:`BedTool`, like the above example.
You can use any file that BEDTools_ supports -- this includes BED, VCF,
GFF, and gzipped versions of any of these. See :ref:`Creating a BedTool`
for more on the different ways of creating a :class:`BedTool`, including
from iterators and directly from a string.
Now, let's see how to do a common task performed on BED files: intersections.
pybedtools-0.9.0/docs/source/default-arguments.rst 0000664 0000000 0000000 00000006240 14173526301 0022321 0 ustar 00root root 0000000 0000000 .. currentmodule:: pybedtools
Default arguments
=================
Recall in the earlier :ref:`intersections` section that we passed the `u=True` argument to :meth:`a.intersect`:
.. doctest::
>>> import pybedtools
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> a_with_b = a.intersect(b, u=True)
Let's do the same thing but use different variable names for the :class:`BedTool` objects so that
the next section is less confusing:
.. doctest::
>>> import pybedtools
>>> exons = pybedtools.example_bedtool('a.bed')
>>> snps = pybedtools.example_bedtool('b.bed')
>>> exons_with_snps = exons.intersect(snps, u=True)
While we're on the subject of arguments, note that we didn't have to specify
`-a` or `-b` arguments, like you would need if calling `intersectBed` from the
command line. In other words, since `exons` refers to the file `a.bed` and
`snps` refers to the file `b.bed`, the following line::
>>> exons_with_snps = exons.intersect(snps, u=True)
is equivalent to the command line usage of::
$ intersectBed -a a.bed -b b.bed -u > tmpfile
But we didn't have to explicitly pass the argument for `-a` because
:class:`BedTool` objects make some assumptions for convenience.
We're calling a method on the :class:`BedTool` object `exons`, so
:mod:`pybedtools` assumes that the file `exons` points to (stored in the
attribute `exons.fn`) is the one we want to use as input. So by default, we
don't need to explicitly give the keyword argument `a=exons.fn` because the
:meth:`exons.intersect` method does so automatically.
We're also calling a method that takes a second bed file as input -- other
such methods include :meth:`BedTool.subtract` and :meth:`BedTool.closest`,
and others. For these methods, in addition to assuming `-a` is taken care
of by the :attr:`BedTool.fn` attribute, :mod:`pybedtools` also assumes the
first unnamed argument to these methods are the second file you want to
operate on (and if you pass a :class:`BedTool`, it'll automatically use the
file in the `fn` attribute of that :class:`BedTool`).
An example may help to illustrate: these different ways of calling
:meth:`BedTool.intersect` all have the same results, with the first version
being the most compact (and probably most convenient):
.. doctest::
>>> # these all have identical results
>>> x1 = exons.intersect(snps)
>>> x2 = exons.intersect(a=exons.fn, b=snps.fn)
>>> x3 = exons.intersect(b=snps.fn)
>>> x4 = exons.intersect(snps, a=exons.fn)
>>> x1 == x2 == x3 == x4
True
Note that `a.intersect(a=a.fn, b)` is not a valid Python expression, since
non-keyword arguments must come before keyword arguments, but
`a.intersect(b, a=a.fn)` works fine.
If you're ever unsure, the docstring for these methods indicates which, if
any, arguments are used as default. For example, in the
:meth:`BedTool.intersect` help, it says::
For convenience, the file or stream this BedTool points to is implicitly
passed as the -a argument to intersectBed
OK, enough about arguments for now, but you can read more about them in
:ref:`similarity principle`, :ref:`default args principle` and :ref:`non
defaults principle`.
pybedtools-0.9.0/docs/source/each.rst 0000664 0000000 0000000 00000004540 14173526301 0017573 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
Each
====
Similar to :meth:`BedTool.filter`, which applies a function to return True
or False given an :class:`Interval`, the :meth:`BedTool.each` method applies a
function to return a new, possibly modified :class:`Interval`.
The :meth:`BedTool.each` method applies a function to every feature. Like
:meth:`BedTool.filter`, you can use your own function or some pre-defined
ones in the :mod:`featurefuncs` module. Also like :meth:`filter`, `*args`
and `**kwargs` are sent to the function.
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> # The results of an "intersect" with c=True will return features
>>> # with an additional field representing the counts.
>>> with_counts = a.intersect(b, c=True)
Let's define a function that will take the number of counts in each feature
as calculated above and divide by the number of bases in that feature. We
can also supply an optional scalar, like 0.001, to get the results in
"number of intersections per kb". We then insert that value into the score
field of the feature. Here's the function:
.. doctest::
>>> def normalize_count(feature, scalar=0.001):
... """
... assume feature's last field is the count
... """
... counts = float(feature[-1])
... normalized = round(counts / (len(feature) * scalar), 2)
...
... # need to convert back to string to insert into feature
... feature.score = str(normalized)
... return feature
And we apply it like this:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> normalized = with_counts.each(normalize_count)
>>> print(normalized)
chr1 1 100 feature1 0.0 + 0
chr1 100 200 feature2 10.0 + 1
chr1 150 500 feature3 2.86 - 1
chr1 900 950 feature4 20.0 + 1
Similar to :meth:`BedTool.filter`, we could have used the Python built-in
function `map` to map a function to each :class:`Interval`. In fact, this can
still be useful if you don't want a :class:`BedTool` object as a result. For
example::
>>> feature_lengths = map(len, a)
However, the :meth:`BedTool.each` method returns a :class:`BedTool` object,
which can be used in a chain of commands, e.g., ::
>>> a.intersect(b).each(normalize_count).filter(lamda x: float(x[4]) < 1e-5)
pybedtools-0.9.0/docs/source/example-script 0000664 0000000 0000000 00000006241 14173526301 0021021 0 ustar 00root root 0000000 0000000
import pybedtools
# Create a BedTool for the GFF file of annotations
g = pybedtools.BedTool('example.gff')
# Set up two functions that will filter and then rename features to set up for
# merging
def renamer(x):
"""
*x* is an Interval object representing a GFF feature.
Renames the feature after the feature type; this is needed for when
.merge() combines names together in a later step.
"""
# This illustrates setting and getting fields in an Interval object based
# on attribute or index
x.name = x[2]
return x
def filter_func(x):
"""
*x* is an Interval object representing a GFF feature.
This filter function will only pass features of type "intron" or "exon"
"""
if x[2] in ('intron', 'exon'):
return True
return False
# Filter and rename the GFF features by passing the above functions to
# .filter() and .each(). Note that since each method returns a new BedTool,
# methods can be chained together
g2 = g.filter(filter_func).each(renamer)
# Save a copy of the new GFF file for later inspection
g2 = g2.saveas('edited.gff')
# Here we call mergeBed, which operates on the file pointed to by g2
# (that is, 'edited.gff').
#
# We use several options for BEDTools mergeBed:
#
# `nms` combines names of merged features (after filtering and renaming, this
# is either "intron" or "exon") into a semicolon-delimited list;
#
# d=-1 does not merge bookended features together;
#
# s=True ensures a stranded merge;
#
# scores='sum' ensures a valid BED file result, with a score field before the
# strand field
#
merged = g2.merge(nms=True, d=-1, s=False, scores='sum')
# Next, we intersect a BAM file with the merged features. Here, we explicitly
# specify the `abam` and `b` arguments, ensure stranded intersections, use
# BED-format output, and report the entire a and b features in the output:
#
reads_in_features = merged.intersect(abam='example.bam',
b=merged.fn,
s=True,
bed=True,
wao=True)
# Set up a dictionary to hold counts
from collections import defaultdict
results = defaultdict(int)
# Iterate through the intersected reads, parse out the names of the features
# they intersected, and increment counts in the dictionary. This illustrates
# how BedTool objects follow the iterator protocol, each time yielding an
# Interval object:
#
total = 0.0
for intersected_read in reads_in_features:
total += 1
# Extract the name of the feature this read intersected by indexing into
# the Interval
intersected_feature = feature[-4]
# Convert names like "intron;intron;intron", which indicates overlapping
# isoforms or genes all with introns in this region, to the simple class of
# "intron"
key = ';'.join(sorted(list(set(intersected_with.split(';')))))
# Increment the count for this class
results[key] += 1
# Rename the "." key to something more meaningful
results['intergenic'] = results.pop('.')
# Add the total to the dictionary
results['total'] = int(total)
print results
# Delete any temporary files created
pybedtools.cleanup()
pybedtools-0.9.0/docs/source/example-script-nocomments 0000664 0000000 0000000 00000001657 14173526301 0023207 0 ustar 00root root 0000000 0000000 import pybedtools
g = pybedtools.BedTool('example.gff')
def renamer(x):
x.name = x[2]
return x
def filter_func(x):
if x[2] in ('intron', 'exon'):
return True
return False
g2 = g.filter(filter_func).each(renamer)
g2 = g2.saveas('edited.gff')
merged = g2.merge(nms=True, d=-1, s=False, scores='sum')
reads_in_features = merged.intersect(abam='example.bam',
b=merged.fn,
s=True,
bed=True,
wao=True)
from collections import defaultdict
results = defaultdict(int)
total = 0.0
for intersected_read in reads_in_features:
total += 1
intersected_feature = feature[-4]
key = ';'.join(sorted(list(set(intersected_with.split(';')))))
results[key] += 1
results['intergenic'] = results.pop('.')
results['total'] = int(total)
print results
pybedtools.cleanup()
pybedtools-0.9.0/docs/source/example_3 0000777 0000000 0000000 00000000000 14173526301 0030324 2../../pybedtools/scripts/intron_exon_reads.py ustar 00root root 0000000 0000000 pybedtools-0.9.0/docs/source/example_3_no_comments 0000664 0000000 0000000 00000002520 14173526301 0022336 0 ustar 00root root 0000000 0000000 import sys
import multiprocessing
import pybedtools
gff = pybedtools.example_filename('gdc.gff')
bam = pybedtools.example_filename('gdc.bam')
g = pybedtools.BedTool(gff).remove_invalid().saveas()
def featuretype_filter(feature, featuretype):
if feature[2] == featuretype:
return True
return False
def subset_featuretypes(featuretype):
result = g.filter(featuretype_filter, featuretype).saveas()
return pybedtools.BedTool(result.fn)
def count_reads_in_features(features_fn):
"""
Callback function to count reads in features
"""
return pybedtools.BedTool(bam).intersect(
b=features_fn,
stream=True).count()
pool = multiprocessing.Pool()
featuretypes = ('intron', 'exon')
introns, exons = pool.map(subset_featuretypes, featuretypes)
exon_only = exons.subtract(introns).merge().remove_invalid().saveas().fn
intron_only = introns.subtract(exons).merge().remove_invalid().saveas().fn
intron_and_exon = exons.intersect(introns).merge().remove_invalid().saveas().fn
features = (exon_only, intron_only, intron_and_exon)
results = pool.map(count_reads_in_features, features)
labels = (' exon only:',
' intron only:',
'intron and exon:')
for label, reads in zip(labels, results):
sys.stdout.write('%s %s\n' % (label, reads))
pybedtools-0.9.0/docs/source/filtering.rst 0000664 0000000 0000000 00000005501 14173526301 0020654 0 ustar 00root root 0000000 0000000
.. include:: includeme.rst
.. _filtering:
Filtering
~~~~~~~~~
The :meth:`BedTool.filter` method lets you pass in a function that accepts an
:class:`Interval` as its first argument and returns True for False. This
allows you to perform "grep"-like operations on :class:`BedTool` objects. For
example, here's how to get a new :class:`BedTool` containing features from `a`
that are more than 100 bp long:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = a.filter(lambda x: len(x) > 100)
>>> print(b)
chr1 150 500 feature3 0 -
The :meth:`filter` method will pass its `*args` and `**kwargs` to the function
provided. So here is a more generic case, where the function is defined once
and different arguments are passed in for filtering on different lengths:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> def len_filter(feature, L):
... "Returns True if feature is longer than L"
... return len(feature) > L
Now we can pass different lengths without defining a new function for each
length of interest, like this:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> print(a.filter(len_filter, L=10))
chr1 1 100 feature1 0 +
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
>>> print(a.filter(len_filter, L=99))
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
>>> print(a.filter(len_filter, L=200))
chr1 150 500 feature3 0 -
See :ref:`BedTools as iterators` for more advanced and space-efficient usage
of :meth:`filter` using iterators.
Note that we could have used the built-in Python function, `filter()`, but that
would have returned an iterator that we would have to construct a new
:class:`pybedtools.BedTool` out of. The :meth:`BedTool.filter` method returns
a ready-to-use :class:`BedTool` object, which allows embedding of
:meth:`BedTool.filter` calls in a chain of commands, e.g.::
>>> a.intersect(b).filter(lambda x: len(x) < 100).merge()
Fast filtering functions in Cython
----------------------------------
The :mod:`featurefuncs` module contains some ready-made functions written
in Cython that will be faster than pure Python equivalents. For example,
there are :func:`greater_than` and :func:`less_than` functions, which are
about 70% faster. In IPython::
>>> from pybedtools.featurefuncs import greater_than
>>> len(a)
310456
>>> def L(x,width=100):
... return len(x) > 100
>>> # The %timeit command is from IPython, and won't work
>>> # in a regular Python script:
>>> %timeit a.filter(greater_than, 100)
1 loops, best of 3: 1.74 s per loop
>>> %timeit a.filter(L, 100)
1 loops, best of 3: 2.96 s per loop
pybedtools-0.9.0/docs/source/flow-of-commands.rst 0000664 0000000 0000000 00000011225 14173526301 0022041 0 ustar 00root root 0000000 0000000 Under the hood
==============
This section documents some details about what happens when a :class:`BedTool`
object is created and exactly what happens when a BEDTools command is called.
It's mostly useful for developers or for debugging.
There are three kinds of sources/sinks for BedTool objects:
* filename
* open file object
* iterator of Interval objects
Iterator "protocol"
-------------------
BedTool objects yield an Interval object on each `next()` call. Where this
Interval comes from depends on how the BedTool was created and what format the
underlying data are in, as follows.
Filename-based
~~~~~~~~~~~~~~
If BED/GTF/GFF/VCF format, then use an `IntervalFile` object for Cython/C++
speed.
If SAM format, then use an `IntervalIterator`. This is a Cython object that
reads individual lines and passes them to `create_interval_from_list`, a Cython
function. `create_interval_from_list` does a lot of the work to figure out
what format the line is, and this is how we are able to support SAM Interval
objects.
If BAM format, then first do a Popen call to `samtools view`, and create an
`IntervalIterator` from subprocess.PIPE similar to SAM format.
Open file-based
~~~~~~~~~~~~~~~
All formats are passed to an `IntervalIterator`, which reads one line at
a time and yields an `Interval` object.
If it's a BAM file (specifically, a detected bgzip stream), then it's actually
first sent to the stdin of a `samtools` Popen call, and then the
subprocess.PIPE from that Popen's stdout is sent to an `IntervalIterator`.
Iterator or generator-based
~~~~~~~~~~~~~~~~~~~~~~~~~~~
If it's neither of the above, then the assumption is that it's already an
iterable of `Interval` objects. This is the case if a `BedTool` is created
with something like::
a = pybedtools.example_bedtool('a.bed')
b = pybedtools.BedTool((i for i in a))
In this case, the `(i for i in a)` creates a generator of intervals from an
`IntervalFile` -- since `a` is a filename-based BedTool. Since the first
argument to the BedTool constructor is neither a filename nor an open file, the
new BedTool `b`'s `.fn` attribute is directly set to this generator . . . so we
have a generator-based BedTool.
Calling BEDTools programs
-------------------------
Depending on the type of BedTool (filename, open file, or iterator), the method
of calling BEDTools programs differs.
In all cases, BEDTools commands are called via a `subprocess.Popen` call
(hereafter called "the Popen" for convenience). Depending on the type of
BedTool objects being operated on, the Popen will be passed different objects
as stdin and/or stdout.
In general, using a filename as input is the most straightforward -- nothing is
passed to the Popen's stdin because the filenames are embedded in the BEDTools
command.
Using non-filename-based BedTools means that they are passed, one line at
a time, to the stdin of the Popen. The commands for the BEDTools call
will specify "stdin" in these cases, as is standard for the BEDTools suite.
The default is for the output to be file-based. In this case, an open tempfile
object is provided as the Popen's stdout.
If the returned BedTool is requested to be a "streaming" BedTool, then the
Popen's stdout will be subprocess.PIPE, and the new BedTool object will be
open-file based (which is what subprocess.PIPE acts like).
Specifically, here is the information flow of stdin/stdout for various
interconversions of BedTool types . . . .
:filename -> filename:
The calling BedTool is filename-based and `stream=False`.
* `stdin`: `None` (the filenames are provided in the BEDTools command)
* `stdout`: open tempfile object
* new BedTool: filename-based BedTool pointing to the tempfile's filename
:filename -> open file object:
The calling BedTool is filename-based and `stream=True` is requested.
* `stdin`: None (provided in the cmds)
* `stdout`: open file object -- specifically, subprocess.PIPE
* new BedTool: iterator-based BedTool. Each `next()` call retrieves the
next line in subprocess.PIPE
:open file object -> filename:
The calling BedTool is from, e.g., subprocess.PIPE and there's
a saveas() call to "render" to file.
* `stdin`: each line in the open file object is written to subprocess.PIPE
* `stdout`: open file object -- either a tempfile or new file created from
supplied filename
* new BedTool: filename-based BedTool
:open file object -> iterator:
The calling BedTool is usually based on subprocess.PIPE, and the output
will *also* come from subprocess.PIPE.
* `stdin`: each line from the open file is written to subprocess.PIPE
* `stdout`: open file object, subprocess.PIPE
* new BedTool: filename based on subprocess.PIPE
pybedtools-0.9.0/docs/source/history.rst 0000664 0000000 0000000 00000013543 14173526301 0020377 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. _`working with history`:
Using the history and tags
--------------------------
`BEDTools`_ makes it very easy to do rather complex genomic algebra. Sometimes
when you're doing some exploratory work, you'd like to rewind back to a
previous step, or clean up temporary files that have been left on disk over the
course of some experimentation.
To assist this sort of workflow, :class:`BedTool` instances keep track of
their history in the :attr:`BedTool.history` attribute. Let's make an
example :class:`BedTool`, `c`, that has some history:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.intersect(b, u=True)
`c` now has a history which tells you all sorts of useful things (described
in more detail below)::
>>> print c.history
[ bedtool("/home/ryan/pybedtools/pybedtools/test/a.bed").intersect("/home/ryan/pybedtools/pybedtools/test/b.bed", u=True), parent tag: klkreuay, result tag: egzgnrvj]
There are several things to note here. First, the history describes the full
commands, including all the names of the temp files and all the arguments that
you would need to run in order to re-create it. Since :class:`BedTool` objects
are fundamentally file-based, the command refers to the underlying filenames
(i.e., :file:`a.bed` and :file:`b.bed`) instead of the :class:`BedTool`
instances (i.e., `a` and `b`). A simple copy-paste of the command will be
enough re-run the command. While this may be useful in some situations, be
aware that if you do run the command again you'll get *another* temp file that
has the same contents as `c`'s temp file.
To avoid such cluttering of your temp dir, the history also reports
**tags**. :class:`BedTool` objects, when created, get a random tag assigned
to them. You can get get the :class:`BedTool` associated with tag with the
:func:`pybedtools.find_tagged` function. These tags are used to keep track
of instances during this session.
So in this case, we could get a reference to the `a` instance with::
>>> should_be_a = pybedtools.find_tagged('klkreuay')
Here's confirmation that the parent of the first step of `c`'s history is
`a` (note that :class:`HistoryStep` objects have a
:attr:`HistoryStep.parent_tag` and :attr:`HistoryStep.result_tag`):
.. doctest::
>>> pybedtools.find_tagged(c.history[0].parent_tag) == a
True
Let's make something with a more complicated history:
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.intersect(b)
>>> d = c.slop(g=pybedtools.chromsizes('hg19'), b=1)
>>> e = d.merge()
>>> # this step adds complexity!
>>> f = e.subtract(b)
Let's see what the history of `f` (the last :class:`BedTool` created) looks
like . . . note that here I'm formatting the results to make it easier to
see::
>>> print f.history
[
| [
| | [
| | | [
| | | | BedTool("/usr/local/lib/python2.6/dist-packages/pybedtools/test/data/a.bed").intersect(
| | | | "/usr/local/lib/python2.6/dist-packages/pybedtools/test/data/b.bed",
| | | | ),
| | | | parent tag: rzrztxlw,
| | | | result tag: ifbsanqk
| | | ],
| | |
| | | BedTool("/tmp/pybedtools.BgULVj.tmp").slop(
| | | b=1,genome="hg19"
| | | ),
| | | parent tag: ifbsanqk,
| | | result tag: omfrkwjp
| | ],
| |
| | BedTool("/tmp/pybedtools.SFmbYc.tmp").merge(),
| | parent tag: omfrkwjp,
| | result tag: zlwqblvk
| ],
|
| BedTool("/tmp/pybedtools.wlBiMo.tmp").subtract(
| "/usr/local/lib/python2.6/dist-packages/pybedtools/test/data/b.bed",
| ),
| parent tag: zlwqblvk,
| result tag: reztxhen
]
Those first three history steps correspond to `c`, `d`, and `e`
respectively, as we can see by comparing the code snippet above with the
commands in each history step. In other words, `e` can be described by the
sequence of 3 commands in the first three history steps. In fact, if we
checked `e.history`, we'd see exactly those same 3 steps.
When `f` was created above, it operated both on `e`, which had its own
history, as well as `b` -- note the nesting of the list. You can do
arbitrarily complex "genome algebra" operations, and the history of the
:class:`BEDTools` will keep track of this. It may not be useful in every
situtation, but the ability to backtrack and have a record of what you've
done can sometimes be helpful.
Deleting temp files specific to a single :class:`BedTool`
---------------------------------------------------------
You can delete temp files that have been created over the history of a
:class:`BedTool` with :meth:`BedTool.delete_temporary_history`. This method
will inspect the history, figure out which items point to files in the temp dir
(which you can see with :func:`get_tempdir`), and prompt you for their
deletion::
>>> f.delete_temporary_history()
Delete these files?
/tmp/pybedtools..BgULVj.tmp
/tmp/pybedtools.SFmbYc.tmp
/tmp/pybedtools.wlBiMo.tmp
(y/N) y
Note that the file that `f` points to is left alone. To clarify, the
:meth:`BedTool.delete_temporary_history` will only delete temp files that match
the pattern ``/pybedtools.*.tmp`` from the history of `f`, up to but
not including the file for `f` itself. Any :class:`BedTool` instances that do
not match the pattern are left alone. Use the kwarg `ask=False` to disable
the prompt.
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–á ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ ° ËP€ °ÌÿÇÈ ˆwï IEND®B`‚ pybedtools-0.9.0/docs/source/includeme.rst 0000664 0000000 0000000 00000002435 14173526301 0020641 0 ustar 00root root 0000000 0000000
.. currentmodule:: pybedtools
.. _Tabix: http://samtools.sourceforge.net/tabix.shtml
.. _download page: http://sourceforge.net/projects/samtools/files/
.. _samtools: http://samtools.sourceforge.net/
.. _tempdir: http://docs.python.org/library/tempfile.html#tempfile.tempdir
.. _filo: https://github.com/arq5x/filo
.. _R: http://www.r-project.org/
.. _BEDTools: http://github.com/arq5x/bedtools
.. _BEDTools documentation: http://code.google.com/p/bedtools/#Documentation
.. _Learn Python the Hard Way: http://learnpythonthehardway.org/static/LearnPythonTheHardWay.pdf
.. _IPython: http://ipython.scipy.org/moin/
.. _BED format: http://genome.ucsc.edu/FAQ/FAQformat#format1
.. _pip: http://www.pip-installer.org/en/latest/installing.html
.. _easy_install: http://pypi.python.org/pypi/setuptools
.. _Python Package Index: http://pypi.python.org/pypi
.. _Cython: http://cython.org/
.. _Python: http://www.python.org/
.. _nosetests: http://somethingaboutorange.com/mrl/projects/nose/
.. _PyYAML: http://pyyaml.org/wiki/PyYAMLDocumentation
.. _Sphinx: http://sphinx.pocoo.org/
.. _Cygwin: http://www.cygwin.com
.. _argparse: http://pypi.python.org/pypi/argparse
.. _nose: http://pypi.python.org/pypi/nose
.. _scipy: http://www.scipy.org/
.. _matplotlib: http://matplotlib.sourceforge.net/
pybedtools-0.9.0/docs/source/index.rst 0000664 0000000 0000000 00000003325 14173526301 0020002 0 ustar 00root root 0000000 0000000 .. pybedtools documentation master file, created by
sphinx-quickstart on Wed Dec 22 17:39:12 2010.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
.. include:: includeme.rst
`pybedtools` documentation
==========================
.. include:: ../../README.rst
As of 2022, `pybedtools` is released under the MIT license; see LICENSE.txt for
more info.
.. note::
If you use :mod:`pybedtools` in your work, please cite the `pybedtools
manuscript `_
and the `BEDTools manuscript
`_:
Dale RK, Pedersen BS, and Quinlan AR. 2011. *Pybedtools: a flexible
Python library for manipulating genomic datasets and annotations*.
Bioinformatics 27(24):3423-3424.
Quinlan AR and Hall IM, 2010. *BEDTools: a flexible suite of utilities
for comparing genomic features*. Bioinformatics 26(6):841–842.
Getting started
---------------
The documentation is separated into 4 main parts, depending on the depth you'd
like to cover:
* Lazy, or just want to jump in? Check out :ref:`3examples` to
get a feel for the package.
* Want a guided tour? Give the :ref:`tutorial` a shot.
* More advanced features are described in the :ref:`topical` section.
* Finally, doctested module documentation can be found in :ref:`autodoc`.
Contents:
---------
.. toctree::
:maxdepth: 2
main
3-brief-examples
tutorial-contents
topical-documentation-contents
FAQs
scripts
autodoc_source
changes
Indices and tables
==================
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`
pybedtools-0.9.0/docs/source/intersections.rst 0000664 0000000 0000000 00000004562 14173526301 0021570 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. _intersections:
Intersections
=============
One common use of BEDTools_ and :mod:`pybedtools` is to perform
intersections.
First, let's create some example :class:`BedTool` instances:
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
Then do the intersection with the :meth:`BedTool.intersect` method:
.. doctest::
>>> a_and_b = a.intersect(b)
`a_and_b` is a new :class:`BedTool` instance. It now points to a temp file
on disk, which is stored in the attribute `a_and_b.fn`; this temp file contains
the intersection of `a` and `b`.
We can either print the new :class:`BedTool` (which will show ALL features
-- use with caution if you have huge files!) or use the
:meth:`BedTool.head` method to show up to the first N lines (10 by
default). Here's what `a`, `b`, and `a_and_b` look like:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a.head()
chr1 1 100 feature1 0 +
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
>>> b.head()
chr1 155 200 feature5 0 -
chr1 800 901 feature6 0 +
>>> a_and_b.head()
chr1 155 200 feature2 0 +
chr1 155 200 feature3 0 -
chr1 900 901 feature4 0 +
The :meth:`BedTool.intersect` method simply wraps the BEDTools_ program
`intersectBed`. This means that we can pass :meth:`BedTool.intersect` any
arguments that `intersectBed` accepts. For example, if we want to use the
`intersectBed` switch `-u` (which, according to the BEDTools documentation,
acts as a True/False switch to indicate that we want to see the features in `a`
that overlapped something in `b`), then we can use the keyword argument
`u=True`, like this:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # Intersection using the -u switch
>>> a_with_b = a.intersect(b, u=True)
>>> a_with_b.head()
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
This time, `a_with_b` is another :class:`BedTool` object that points to a
different temp file whose name is stored in `a_with_b.fn`. You can read
more about the use of temp files in :ref:`temp principle`. More on
arguments that you can pass to :class:`BedTool` objects in a moment, but
first, some info about saving files.
pybedtools-0.9.0/docs/source/intervals.rst 0000664 0000000 0000000 00000023701 14173526301 0020702 0 ustar 00root root 0000000 0000000 .. currentmodule:: pybedtools
.. _intervals:
Intervals
=========
An :class:`Interval` object is how :mod:`pybedtools` represents a line in a BED,
GFF, GTF, or VCF file in a uniform fashion. This section will describe
some useful features of :class:`Interval` objects.
First, let's get a :class:`BedTool` to work with:
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
We can access the :class:`Intervals` of `a` several different ways.
Probably the most convenient way is by indexing a :class:`BedTool` object:
.. doctest::
>>> feature = a[0]
:class:`BedTool` objects support slices, too:
.. doctest::
>>> features = a[1:3]
Common :class:`Interval` attributes
-----------------------------------
Printing a feature converts it into the original line from the file:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> print(feature)
chr1 1 100 feature1 0 +
The string representation of an :class:`Interval` object is simply a valid line,
**including the newline**, for the format from which that :class:`Interval` was
created (accessible via :attr:`Interval.file_type`).
All features, no matter what the file type, have `chrom`, `start`, `stop`,
`name`, `score`, and `strand` attributes. Note that `start` and `stop` are
integers, while everything else (including `score`) is a string.
:mod:`pybedtools` supports both Python 2 and 3. When using Python 3, all
strings are the `str` type. When using Python 2, all strings are unicode.
.. note::
This documentation undergoes testing with Python 2 and Python 3. These
versions handle strings differently. For example, under Python 2::
>>> feature.chrom
u'chr1'
But under Python 3::
>>> feature.chrom
'chr1'
Since all strings returned by Interval objects are unicode, we solve this
by making a helper function `show_value` that converts unicode to native
string -- but only under Python 2.
.. doctest::
>>> import sys
>>> def show_value(s):
... """
... Convert unicode to str under Python 2;
... all other values pass through unchanged
... """
... if sys.version_info.major == 2:
... if isinstance(s, unicode):
... return str(s)
... return s
.. doctest::
>>> show_value(feature.chrom)
'chr1'
>>> show_value(feature.start)
1
>>> show_value(feature.stop)
100
>>> show_value(feature.name)
'feature1'
>>> show_value(feature.score)
'0'
>>> show_value(feature.strand)
'+'
Let's make another feature that only has chrom, start, and stop to see how
:mod:`pybedtools` deals with missing attributes:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> feature2 = pybedtools.BedTool('chrX 500 1000', from_string=True)[0]
>>> print(feature2)
chrX 500 1000
>>> show_value(feature2.chrom)
'chrX'
>>> show_value(feature2.start)
500
>>> show_value(feature2.stop)
1000
>>> show_value(feature2.name)
'.'
>>> show_value(feature2.score)
'.'
>>> show_value(feature2.strand)
'.'
This illustrates that default values are the string "`.`".
Indexing into :class:`Interval` objects
---------------------------------------
:class:`Interval` objects can also be indexed by position into the original
line (like a list) or indexed by name of attribute (like a dictionary).
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> print(feature)
chr1 1 100 feature1 0 +
>>> show_value(feature[0])
'chr1'
>>> show_value(feature['chrom'])
'chr1'
>>> show_value(feature[1])
'1'
>>> show_value(feature['start'])
1
Fields
------
:class:`Interval` objects have a :attr:`Interval.fields` attribute that
contains the original line split into a list of strings. When an integer
index is used on the :class:`Interval` (for example, `feature[3]`), it is
the `fields` attribute that is actually being indexed into.
.. doctest::
>>> f = pybedtools.BedTool('chr1 1 100 asdf 0 + a b c d', from_string=True)[0]
>>> [show_value(i) for i in f.fields]
['chr1', '1', '100', 'asdf', '0', '+', 'a', 'b', 'c', 'd']
>>> len(f.fields)
10
.. _zero_based_coords:
BED is 0-based, others are 1-based
----------------------------------
One troublesome part about working with multiple formats is that BED files
have a different coordinate system than GFF/GTF/VCF/ files.
* **BED files are 0-based** (the first base of the chromosome is considered
position 0) and the **feature does not include the stop position**.
* **GFF, GTF, and VCF files are 1-based** (the first base of the chromosome
is considered position 1) and the **feature includes the stop position**.
:mod:`pybedtools` follows the following conventions:
* The value in :attr:`Interval.start` will *always contain the
0-based start position*, even if it came from a GFF or other 1-based
feature.
* Getting the `len()` of an :class:`Interval` will always return
`Interval.stop - Interval.start`, so no matter what format the
original file was in, the length will be correct. This greatly simplifies
underlying code, and it means you can treat all :class:`Intervals`
identically.
* The contents of :attr:`Interval.fields` will *always be strings*,
which in turn always represent the original line in the file.
* This means that for a GFF feature, :attr:`Interval.fields[3]` or
:attr:`Interval[3]`, which is 1-based according to the file format,
will always be one bp larger than :attr:`Interval.start`, which
always contains the 0-based start position. Their data types
are different; :attr:`Interval[3]` will be a string and
:attr:`Interval.start` will be a long.
* Printing an :class:`Interval` object created from a GFF file will
show the tab-delimited fields in GFF coords while printing an
:class:`Interval` object created from a BED file will show fields in
BED coords.
Worked example
~~~~~~~~~~~~~~
To illustrate and confirm this functionality, let's create a GFF feature and
a BED feature from scratch and compare them.
First, let's create a GFF :class:`Interval` from scratch:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> gff = ["chr1",
... "fake",
... "mRNA",
... "51", # <- start is 1 greater than start for the BED feature below
... "300",
... ".",
... "+",
... ".",
... "ID=mRNA1;Parent=gene1;"]
>>> gff = pybedtools.create_interval_from_list(gff)
Then let's create a corresponding BED :class:`Interval` that represents the
same genomic coordinates of of the GFF feature, but since BED format is
zero-based we need to subtract 1 from the start:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> bed = ["chr1",
... "50",
... "300",
... "mRNA1",
... ".",
... "+"]
>>> bed = pybedtools.create_interval_from_list(bed)
Let's confirm these new features were recognized as the right file type --
the format is auto-detected based on the position of chrom/start/stop coords in
the provided field list:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> show_value(gff.file_type)
'gff'
>>> show_value(bed.file_type)
'bed'
Printing the :class:`Intervals` shows that the strings are in the appropriate
coordinates:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # for testing, we make sure keys are sorted. Not needed in practice.
>>> gff.attrs.sort_keys = True
>>> print(gff)
chr1 fake mRNA 51 300 . + . ID=mRNA1;Parent=gene1;
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> print(bed)
chr1 50 300 mRNA1 . +
Since `start` attributes are always zero-based, the GFF and BED `start` values
should be identical:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> bed.start == gff.start == 50
True
For the BED feature, the second string field (representing the start position)
and the `start` attribute should both be `50` (though one is an integer and the
other is a string) . . .
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> show_value(bed.start)
50
>>> show_value(bed[1])
'50'
. . . but for the GFF feature, they differ -- the `start` attribute is
zero-based while the string representation (the fourth field of a GFF file)
remains in one-based GFF coords:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> show_value(gff.start)
50
>>> show_value(gff[3])
'51'
As long as we use the integer `start` attributes, we can treat the
:class:`Interval` objects identically, without having to check for their format
every time:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> len(bed) == len(gff) == 250
True
GFF features have access to attributes
--------------------------------------
GFF and GTF files have lots of useful information in their attributes field
(the last field in each line). These attributes can be accessed with the
:attr:`Interval.attrs` attribute, which acts like a dictionary. For speed,
the attributes are lazy -- they are only parsed when you ask for them. BED
files, which do not have an attributes field, will return an empty
dictionary.
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # original feature
>>> print(gff)
chr1 fake mRNA 51 300 . + . ID=mRNA1;Parent=gene1;
>>> # original attributes
>>> sorted(gff.attrs.items())
[('ID', 'mRNA1'), ('Parent', 'gene1')]
>>> # add some new attributes
>>> gff.attrs['Awesomeness'] = "99"
>>> gff.attrs['ID'] = 'transcript1'
>>> # Changes in attributes are propagated to the printable feature
>>> # for testing, we make sure keys are sorted. Not needed in practice.
>>> gff.attrs.sort_keys = True
>>> assert gff.attrs.sort_keys
>>> print(gff)
chr1 fake mRNA 51 300 . + . Awesomeness=99;ID=transcript1;Parent=gene1;
Understanding :class:`Interval` objects is important for using the powerful
filtering and mapping facilities of :class:`BedTool` objects, as described
in the next section.
pybedtools-0.9.0/docs/source/intro.rst 0000664 0000000 0000000 00000001574 14173526301 0020032 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
Intro
=====
This tutorial assumes that
1. You know how to use BEDTools_ (if not, check out the
`BEDTools documentation`_)
2. You know how to use Python (if not, check out some
tutorials like `Learn Python the Hard Way`_)
A brief note on conventions
---------------------------
Throughout this documentation I've tried to use consistent typography, as
follows:
* Python variables and arguments, as well as filenames look like this: `s=True`
* Methods, which are often linked to documentation look like this:
:meth:`BedTool.merge`.
* Arguments that are passed to BEDTools_ programs, as if you were on the
command line, look like this: ``-d``.
* The ">>>" in the examples below indicates a Python interpreter prompt and
means to type the code into an interactive Python interpreter like
IPython_ or in a script. (don't type the >>>)
Onward!
pybedtools-0.9.0/docs/source/main.rst 0000664 0000000 0000000 00000013067 14173526301 0017623 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. _installation:
Installation
------------
:mod:`pybedtools` is a Python package that wraps BEDTools, so you'll need both
installed.
.. _condainstall:
Install via `conda`
~~~~~~~~~~~~~~~~~~~
This is by far the easiest option. If you're usng the `Anaconda Python
distribution `_ on Linux, then the following
will install :mod:`pybedtools`::
conda install --channel conda-forge --channel bioconda pybedtools
You can also install Tabix and BEDTools via conda::
conda install --channel conda-forge --channel bioconda bedtools htslib
Otherwise, read on for installation on other platforms and in other
environments.
Required
++++++++
:Python_: version 3.6 or greater (Python 3 is supported). If you're setting up
Python for the first time, the `Anaconda Python distribution
`_ is highly recommended.
:BEDTools_:
The version is not important, but later versions will have more features so
it's a good idea to get the latest. Follow the instructions at
https://github.com/arq5x/bedtools2 to install, and make sure the programs
are on your path. That is, you should be able to call `bedtools` from
any directory
:A C/C++ compiler:
* **OSX:** Install Xcode from http://developer.apple.com/xcode/
* **Linux:** `gcc`, usually already installed; on Ubuntu, install with `sudo apt-get install
build-essentials`
* **Windows:** may work with conda compliers or Cygwin but this is
untested. Windows is not supported.
Optional
++++++++
The following external tools are **optional**:
:Tabix_ [`download page`_]:
Required for fast, random access to BED/GFF/GTF/VCF files by providing
a chrom:start-stop coordinate. Similar to the above, you should be able to
call `tabix` from any directory.
Installing :mod:`pybedtools`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Install latest release via `conda` (recommended)
++++++++++++++++++++++++++++++++++++++++++++++++
See :ref:`condainstall` section above.
Install latest release using `pip`
++++++++++++++++++++++++++++++++++
:mod:`pybedtools` is on PyPI, so you can install via `pip` like most Python
packages. Depending on your Python installation, this may require admin
rights::
pip install pybedtools
Install development version via github
++++++++++++++++++++++++++++++++++++++
Assumptions:
1. `git` is installed
2. Cython is installed (`conda install cython` or `pip install cython`)
The following commands will clone the repository
.. code-block:: bash
git clone https://github.com/daler/pybedtools.git
cd pybedtools
The only time the C++ files will be rebuilt from Cython .pyx source is if the
`cythonize` subcommand is used. To rebuild the C++ files using Cython, run:
.. code-block:: bash
python setup.py cythonize
To install in develop mode, where changes to Python files will be picked up
without having to re-install, use:
.. code-block:: bash
python setup.py develop
The above will not update when the .pyx files are updated, so if the Cython
source files have been changed, run:
.. code-block:: bash
python setup.py cythonize develop
See `python setup.py --usage` for more information.
Quick test
~~~~~~~~~~
Paste the following into a new file called `mytest.py`::
import pybedtools
a = pybedtools.example_bedtool('a.bed')
b = pybedtools.example_bedtool('b.bed')
print a.intersect(b)
Run the script with `python mytest.py`. You should get the results::
chr1 155 200 feature2 0 +
chr1 155 200 feature3 0 -
chr1 900 901 feature4 0 +
Running tests, compiling docs
-----------------------------
There are several modes of testing described below, and in each mode both unit
tests and doctests can be run.
The following instructions assume that you have a working copy of the
:mod:`pybedtools` repository and that you're in the top-level dir of repo,
e.g., by running::
git clone https://github.com/daler/pybedtools.git
cd pybedtools
Test current installation
~~~~~~~~~~~~~~~~~~~~~~~~~
To test within the existing installation, install the additional packages for
testing::
conda install --channel conda-forge --channel bioconda \
--file requirements.txt \
--file test-requirements.txt \
--file optional-requirements.txt
Then run unit tests along with module doctests::
pytest --doctest-modules
Finally, run sphinx doctests::
(cd docs && make doctest)
Test within isolated conda environments
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Run the `condatest.sh` script in the top-level dir of the repo. This script
creates a new isolated conda environment and runs both unit tests and doctests.
To run tests under Python 2::
./condatest.sh 2
To run tests under Python 3::
./condatest.sh 3
Compile docs
~~~~~~~~~~~~
To compile the docs, from the top-level `pybedtools` directory::
(cd docs && make html)
Then point a browser to `docs/build/html/index.html`.
Contributing
~~~~~~~~~~~~
Any and all contributions are welcome. Here's how to contribute:
#. Fork the `pybedtools repository `_ on
github (see `forking help `_).
#. Make your changes/fixes/improvements locally.
#. Optional, but much-appreciated: write some tests for your changes.
(Don't worry about integrating your tests into the test framework. You
can just attach the tests either as a commited script or as comments to
the commit and I can integrate them later)
#. Send a pull request (see `pull request help `_)
pybedtools-0.9.0/docs/source/piping.rst 0000664 0000000 0000000 00000005710 14173526301 0020161 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. doctest::
:hide:
>>> import pybedtools
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
Chaining methods together (pipe)
--------------------------------
One useful thing about :class:`BedTool` methods is that they often return a
new :class:`BedTool`. In practice, this means that we can chain together
multiple method calls all in one line, similar to piping on the command
line.
For example, this intersect and merge can be combined into one command:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # These two lines...
>>> x1 = a.intersect(b, u=True)
>>> x2 = x1.merge()
>>> # ...can be combined into one line:
>>> x3 = a.intersect(b, u=True).merge()
>>> x2 == x3
True
A rule of thumb is that all methods that wrap BEDTools_ programs return
:class:`BedTool` objects, so you can chain these together. Many
:mod:`pybedtools`-unique methods return :class:`BedTool` objects too, just
check the docs (according to :ref:`good docs principle`). For example, as
we saw in one of the examples above, the :meth:`BedTool.saveas` method
returns a :class:`BedTool` object. That means we can sprinkle those
commands within the example above to save the intermediate steps as
meaningful filenames for later use. For example:
.. doctest::
>>> x4 = a.intersect(b, u=True).saveas('a-with-b.bed').merge().saveas('a-with-b-merged.bed')
Now we have new files in the current directory called :file:`a-with-b.bed`
and :file:`a-with-b-merged.bed`. Since :meth:`BedTool.saveas` returns a
:class:`BedTool` object, `x4` points to the :file:`a-with-b-merged.bed`
file.
Sometimes it can be cleaner to separate consecutive calls on each line:
.. doctest::
>>> x4 = a\
... .intersect(b, u=True)\
... .saveas('a-with-b.bed')\
... .merge()\
... .saveas('a-with-b-merged.bed')
Operator overloading
--------------------
There's an even easier way to chain together commands.
I found myself doing intersections so much that I thought it would be
useful to overload the ``+`` and ``-`` operators to do intersections.
To illustrate, these two example commands do the same thing:
.. doctest::
>>> x5 = a.intersect(b, u=True)
>>> x6 = a + b
>>> x5 == x6
True
Just as the `+` operator assumes `intersectBed` with the `-u` arg, the `-`
operator assumes `intersectBed` with the `-v` arg:
.. doctest::
>>> x7 = a.intersect(b, v=True)
>>> x8 = a - b
>>> x7 == x8
True
If you want to operating on the resulting :class:`BedTool` that is
returned by an addition or subtraction, you'll need to wrap the operation
in parentheses. This is another way to do the chaining together of the
intersection and merge example from above:
.. doctest::
>>> x9 = (a + b).merge()
And to double-check that all these methods return the same thing:
.. doctest::
>>> x2 == x3 == x4 == x9
True
You can learn more about chaining in :ref:`chaining principle`.
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:mod:`pybedtools` development model
===================================
:mod:`pybedtools` is very much an open-source project. We do all of our
development in a public github repository
(https://github.com/daler/pybedtools). Initially Ryan Dale created `pybedtools`
as a wrapper for the BEDTools command-line that allowed whole-file operations
(e.g., intersecting two BED files). At around the same time, Aaron Quinlan
began `bedtools-python`, a Cython wrapper to the BEDTools C++ API which allowed
per-line operations. After using both libraries, Brent Pedersen made an initial
attempt to merge the two libraries so that one could do a whole-file operation
and then iterate line-wise over the result.
All three authors -- especially Ryan -- then worked on the integration and further
improvements. We often discussed individual commits and design decisions using
the github interface. These discussions (often visible in github tickets such
as https://github.com/daler/pybedtools/issues/14) facilitated the continued
collaboration, and our daily use of the library have shaped pybedtools into
what it is today.
As three independent bioinformaticians who have not previously worked together,
using github as a place for discussing design decisions and coding standards
has been invaluable.
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===========================
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=================================
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.. currentmodule:: pybedtools.featurefuncs
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===================================
.. currentmodule:: pybedtools.featurefuncs
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.. _saveresults:
Saving the results
==================
If you want to save the results as a meaningful filename for later use, use
the :meth:`BedTool.saveas` method. This does a copy operation on the file
pointed to by the :class:`BedTool`. This method also lets you optionally specify a
trackline for directly uploading to the UCSC Genome Browser, instead of
opening up the files afterward and manually adding a trackline:
.. doctest::
:hide:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> a_with_b = a.intersect(b)
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> c = a_with_b.saveas('intersection-of-a-and-b.bed', trackline='track name="a and b"')
>>> print(c.fn)
intersection-of-a-and-b.bed
>>> # opening the underlying file shows the track line
>>> print(open(c.fn).read())
track name="a and b"
chr1 155 200 feature2 0 +
chr1 155 200 feature3 0 -
chr1 900 901 feature4 0 +
>>> # printing file-based BedTool objects will not print the track line
>>> print(c)
chr1 155 200 feature2 0 +
chr1 155 200 feature3 0 -
chr1 900 901 feature4 0 +
Note that the :meth:`BedTool.saveas` method returns a new :class:`BedTool`
object which points to the newly created file on disk. This allows you to
insert a :meth:`BedTool.saveas` call in the middle of a chain of commands
(described in another section below).
Alternatively, if you do not want to add a track line, you can use the
:meth:`BedTool.moveto` method which can be much faster, especially on larger
files. This does rename operation rather than a copy operation, which means
that trying to call :class:`BedTool` methods on the original will no longer
work because the underlying file no longer exists:
.. doctest::
>>> d = a_with_b.moveto('another_location.bed')
pybedtools-0.9.0/docs/source/scripts.rst 0000664 0000000 0000000 00000000433 14173526301 0020357 0 ustar 00root root 0000000 0000000 Scripts
=======
:mod:`pybedtools` comes with several scripts that illustrate common use-cases.
After v0.8.1, these scripts are no longer installed but can be found in the
`scripts directory of the GitHub repo
`_.
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.. _shell_comparison:
Shell script comparison
=======================
The following two scripts illustrate the same analysis. The first script uses
:mod:`pybedtools`, and the second uses bash scripting. The filenames in these
scripts are written so they can be run without modification from the
`pybedtools/scripts` source directory.
Both scripts print the genes that are <5000 bp from intergenic SNPs. These
scripts show how the same analysis can be performed with :mod:`pybedtools` in
a much clearer and reusable fashion without losing any speed. Furthermore, note
that the bash script requires knowledge in three languages (Perl, bash, and
awk) to accomplish the same thing as the Python script.
The `bash` script contains comparative notes as well as timing comparisons
between the two scripts.
:mod:`pybedtools` version (`py_ms_example.py`)
----------------------------------------------
.. literalinclude:: ../../pybedtools/scripts/py_ms_example.py
`bash` version (`sh_ms_example.sh`)
-----------------------------------
.. literalinclude:: ../../pybedtools/scripts/sh_ms_example.sh
:language: bash
pybedtools-0.9.0/docs/source/topical-bam-semantics.rst 0000664 0000000 0000000 00000005605 14173526301 0023052 0 ustar 00root root 0000000 0000000 Notes on BAM file semantics
---------------------------
These are some implementation notes about how BAM files are handled by
mod:`pybedtools` for those interested in the implementation.
The initial creation of a :class:`BedTool` that points to a file will
trigger a check on the first 15 bytes of a file to see if it's a BAM file.
If so, then the BedTool's `_isbam` attribute is set to `True`. If the
:class:`BedTool` is a stream, then the check will not be made, and it is up
to the creator (whether it's the user on the command line or a method or
function) to set the BAM-streaming BedTool's `._isbam` attribute to `True`.
This is handled automatically for wrapped BEDTools programs (described
below).
Some BEDTools programs natively handle BAM files. The `@_wraps` decorator
that is used to wrap each method has a `bam` kwarg that specifies what
input argument the wrapped tool will accept as BAM (for example, the
wrapper for `intersectBed` has the kwarg `bam="abam"`).
If `self._isbam == True`, then `self.fn` is passed to the `bam` input arg
instead of the default implicit input arg (so `intersectBed`, `self.fn` is
passed as `abam` instead of `-a`).
Trying to call a method that does not have a `bam` kwarg registered will
result in a ValueError, along with a message that says to use
:meth:`BedTool.bam_to_bed()` first. For example, `subtractBed` currently
doesn't accept BAM files as input, so this doesn't work::
>>> a = pybedtools.example_bedtool('gdc.bam')
>>> b = pybedtools.example_bedtool('gdc.gff')
>>> # doesn't work:
>>> c = a.subtract(b)
However, converting to `a` to BED format first (and setting `stream=True`
to save on disk I/O) works fine::
>>> # works:
>>> c = a.bam_to_bed(stream=True).subtract(b)
Iterating over a file-based BedTool that points to a BAM will call
`samtools view` and yields lines which sent to `IntervalIterator`, which
splits the lines and passes them to `create_interval_from_list` which in
turn decides on the fly whether it's gff, bed, or sam.
However, we can't easily check the first 15 bytes of a streaming BedTool,
because that would consume those bytes. The `@_wraps` decorator needs to
know some information about which arguments to a wrapped program result in
BAM output and which result in non-BAM output.
Given `a = BedTool('x.bam')`:
* `c = a.intersect(b)` creates BAM output, so it returns a new BedTool with
`c._isbam = True`.
* `a.intersect(b, bed=True)` returns BED output. `@_wraps` needs to know, if the
input was BAM, which kwarg[s] disable BAM output. For example, if `-bed`
is passed to `intersectBed`, the output will NOT be BAM. This is
implemented with the `nonbam` kwarg for :func:`_wraps`. In this case,
the resulting BED file is treated like any other BED file.
* `c = a.intersect(b, stream=True)` returns streaming BAM output. In this
case, iterating over `c` will send the BAM stream to stdin of a samtools
call
pybedtools-0.9.0/docs/source/topical-bam.rst 0000664 0000000 0000000 00000012010 14173526301 0021052 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. _bam:
Working with BAM files
======================
Some BEDTools programs, like `intersecteBed`, support BAM files as input.
From the command line, you would need to specify the `-abam`
argument to do so. However, :mod:`pybedtools` auto-detects BAM files and
passes the `abam` argument automatically for you. That means if you create
a :class:`BedTool` out of a BAM file, like this:
.. doctest::
x = pybedtools.example_bedtool('gdc.bam')
you can intersect it with a BED file without doing anything special:
.. doctest::
b = pybedtools.example_bedtool('gdc.gff')
y = x.intersect(b)
The output of this operation follows the semantics of BEDTools. That is,
for programs like `intersectBed`, if `abam` is used then the output will be
BAM format as well. But if the `-bed` argument is passed, then the output
will be BED format. Similarly, in :mod:`pybedtools`, if a BAM file is used
to create the :class:`BedTool` then the results will also be in BAM
format. If the `bed=True` kwarg is passed, then the results be in BED
format.
As an example, let's intersect a BAM file of reads with annotations using
files that ship with :mod:`pybedtools`. First, we create the
:class:`BedTool` objects:
.. doctest::
>>> a = pybedtools.example_bedtool('x.bam')
>>> b = pybedtools.example_bedtool('dm3-chr2L-5M.gff.gz')
The first call below will return BAM results, and the second will return
BED results.
.. doctest::
>>> bam_results = a.intersect(b)
>>> str(bam_results.file_type) == 'bam'
True
>>> bed_results = a.intersect(b, bed=True)
>>> str(bed_results.file_type) == 'bed'
True
We can iterate over BAM files to get :class:`Interval` objects just like
iterating over BED or GFF files. Indexing works, too:
.. doctest::
:options: +ELLIPSIS +NORMALIZE_WHITESPACE
>>> for i in bam_results[:2]:
... print(i)
HWUSI-NAME:2:69:512:1017#0 16 chr2L 9330 3 36M * 0 0 TACAAATCTTACGTAAACACTCCAAGCATGAATTCG Y`V_a_TM[\_V`abb`^^Q]QZaaaaa_aaaaaaa NM:i:0 NH:i:2 CC:Z:chrX CP:i:19096815
HWUSI-NAME:2:91:1201:1113#0 16 chr2L 10213 255 36M * 0 0 TGTAGAATGCAAAAATTACATTTGTGAGTATCATCA UV[aY`]\VZ`baaaZa`_aab_`_`a`ab``b`aa NM:i:0 NH:i:1
>>> bam_results[0]
Interval(chr2L:9329-9365)
>>> bam_results[:10]
>>> cigar_string = i[5]
There are several things to watch out for here.
First, note that :mod:`pybedtools` uses the convention that BAM features in
plain text format are considered SAM features, so these SAM features are
**one-based and include the stop coordinate** as illustrated below. (Note that
there is some additional complexity here due to supporting Python 2 and
3 simultaneously in this tested documentation)
.. doctest::
>>> bam_results[0].start
9329
>>> import six
>>> isinstance(bam_results[0][3], six.string_types)
True
>>> print(bam_results[0][3])
9330
Second, the stop coordinate is defined as the *start coord plus the
length of the sequence*; eventually a more sophisticated, CIGAR-aware
approach may be used. Similarly, the length is defined to be `stop -
start` -- again, not CIGAR-aware at the moment. For more sophisticated
low-level manipulation of BAM features, you might want to consider using
HTSeq_.
Third, while we can iterate over a BAM file and manipulate the features as
shown above, *calling BEDTools programs on a BAM-based generator is not
well-supported*.
Specifically::
>>> a = pybedtools.example_bed('gdc.bam')
>>> b = pybedtools.example_bed('b.bed')
>>> # works, gets BAM results
>>> results = a.intersect(b)
>>> # make a generator of features in `a`
>>> a2 = pybedtools.BedTool(i for i in a)
>>> # this does NOT work
>>> a2.intersect(b)
When we specified the `bed=True` kwarg above, the intersected BAM results
are converted to BED format. We can use those like a normal BED file.
Note that since we are viewing BED output, *the start and stops are 0-based*:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> d = a.intersect(b, bed=True)
>>> d.head(3)
chr2L 9329 9365 HWUSI-NAME:2:69:512:1017#0 3 - 9329 9365 0,0,0 1 36, 0,
chr2L 9329 9365 HWUSI-NAME:2:69:512:1017#0 3 - 9329 9365 0,0,0 1 36, 0,
chr2L 9329 9365 HWUSI-NAME:2:69:512:1017#0 3 - 9329 9365 0,0,0 1 36, 0,
Consistent with BEDTools programs, BAM files are **not** supported as the
second input argument. In other words, `intersectBed` does not have both
`-abam` and `-bbam` arguments, so :mod:`pybedtools` will not not allow this
either.
However, :mod:`pybedtools` does allow streaming BAM files to be the input of
methods that allow BAM input as the first input. In this [trivial] example, we
can stream the first intersection to save disk space, and then send that
streaming BAM to the next :meth:`BedTool.intersect` call. Since it's not
streamed, the second intersection will be saved as a temp BAM file on disk::
>>> a.intersect(b, stream=True).intersect(b)
.. _HTSeq: http://www-huber.embl.de/users/anders/HTSeq/doc/overview.html
pybedtools-0.9.0/docs/source/topical-comparisons.rst 0000664 0000000 0000000 00000003124 14173526301 0022656 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
Comparisons
===========
Sometimes it is useful to be able to do quick comparisons between features to
see if they overlap or if they are to the left or to the right. Comparsion
operators (`<`, `<=`, `==`, `=>`, `>`) are defined for intervals. Note that
these comparsions **ignore strand**; if you need more control then it's
probably better to write a quick one-off function to do the comparisons.
In general, `>` and `<` are True if the features are completely
separate from each other; if they overlap then `>=` and `<=` are True as well.
Nested features are not comparable, so a NotImplementedError will be raised.
It's probably easiest to describe these operators "ASCII-graphically"::
# a == b, a >= b, a <= b
a ---------
b ---------
# a < b, a <= b
a ----
b -----
# a <= b
a ----
b ----- (book-ended)
# a >= b
a -----
b ---- (book-ended)
# a > b, a >= b
a ------
b ----
# a >= b
a ------------
b ---------
# a >= b
a -----------
b -------------
# a <= b
a -------------
b -----------
# a <= b
a ---------
b ------------
# a <= b
a -----------
b -----------
# a >= b
a -----------
b -----------
# undefined!
a ----
b -----------
# undefined!
a -----------
b ----
# a <= b
a -----------
b -
# a >= b
a -
b -----------
# a == b, a <= b, a >= b
a -
b - (starts and stops are identical for all features)
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.. _creating a BedTool:
Creating a :class:`BedTool`
---------------------------
To create a :class:`BedTool`, first you need to import the
:mod:`pybedtools` module. For these examples, I'm assuming you have
already done the following:
.. doctest::
>>> import pybedtools
>>> from pybedtools import BedTool
Next, you need a BED file to work with. If you already have one, then great
-- move on to the next section. If not, :mod:`pybedtools` comes with some
example bed files used for testing. You can take a look at the list of
example files that ship with :mod:`pybedtools` with the
:func:`list_example_files` function:
.. doctest::
>>> # list the example bed files
>>> files = pybedtools.list_example_files()
Once you decide on a file to use, feed the your choice to the
:func:`example_filename` function to get the full path:
.. doctest::
>>> # get the full path to an example bed file
>>> bedfn = pybedtools.example_filename('a.bed')
The full path of *bedfn* will depend on your installation (this is similar
to the ``data()`` function in R_, if you're familiar with that).
Now that you have a filename -- either one of the example files or your
own, you create a new :class:`BedTool` simply by pointing it to that
filename:
.. doctest::
>>> # create a new BedTool from the example bed file
>>> myBedTool = BedTool(bedfn)
Alternatively, you can construct BED files from scratch by using the
``from_string`` keyword argument. However, all spaces will be converted to
tabs using this method, so you'll have to be careful if you add "name"
columns. This can be useful if you want to create *de novo* BED files on
the fly:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # an "inline" example:
>>> fromscratch1 = pybedtools.BedTool('chrX 1 100', from_string=True)
>>> print(fromscratch1)
chrX 1 100
>>> # using a longer string to make a bed file. Note that
>>> # newlines don't matter, and one or more consecutive
>>> # spaces will be converted to a tab character.
>>> larger_string = """
... chrX 1 100 feature1 0 +
... chrX 50 350 feature2 0 -
... chr2 5000 10000 another_feature 0 +
... """
>>> fromscratch2 = BedTool(larger_string, from_string=True)
>>> print(fromscratch2)
chrX 1 100 feature1 0 +
chrX 50 350 feature2 0 -
chr2 5000 10000 another_feature 0 +
Of course, you'll usually be using your own bed files that have some
biological importance for your work that are saved in places convenient for
you, for example::
>>> a = BedTool('/data/sample1/peaks.bed')
pybedtools-0.9.0/docs/source/topical-design-principles.rst 0000664 0000000 0000000 00000023174 14173526301 0023747 0 ustar 00root root 0000000 0000000 .. include:: includeme.rst
.. _`Design principles`:
Design principles
-----------------
Hopefully, understanding (or just being aware of) these design principles
will help in getting the most out of :mod:`pybedtools` and working
efficiently.
.. _`temp principle`:
Principle 1: Temporary files are created (and deleted) automatically
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Using :class:`BedTool` instances typically has the side effect of creating
temporary files on disk. Even when using the iterator protocol of
:class:`BedTool` objects, temporary files may be created in order to run
BEDTools programs (see :ref:`BedTools as iterators` for more on this latter topic).
Let's illustrate some of the design principles behind :mod:`pybedtools` by
merging features in :file:`a.bed` that are 100 bp or less apart (`d=100`)
in a strand-specific way (`s=True`):
.. doctest::
>>> from pybedtools import BedTool
>>> import pybedtools
>>> a = BedTool(pybedtools.example_filename('a.bed'))
>>> merged_a = a.merge(d=100, s=True)
Now `merged_a` is a :class:`BedTool` instance that contains the results of the
merge.
:class:`BedTool` objects must always point to a file on disk. So in the
example above, `merged_a` is a :class:`BedTool`, but what file does it
point to? You can always check the :attr:`BedTool.fn` attribute to find
out::
>>> # what file does `merged_a` point to?
>>> merged_a.fn
'/tmp/pybedtools.MPPp5f.tmp'
Note that the specific filename will be different for you since it is a
randomly chosen name (handled by Python's :mod:`tempfile` module). This
shows one important aspect of :mod:`pybedtools`: every operation results in
a new temporary file. Temporary files are stored in :file:`/tmp` by
default, and have the form :file:`/tmp/pybedtools.*.tmp`.
By default, at exit all temp files created during the session will be deleted.
However, if Python does not exit cleanly (e.g., from a bug in client code),
then the temp files will not be deleted.
If this happens, from the command line you can always do a::
rm /tmp/pybedtools.*.tmp
In the middle of a session, you can force a deletion of all tempfiles created thus far::
>>> # Don't do this yet if you're following the tutorial!
>>> pybedtools.cleanup()
Alternatively, in this session or another session you can use::
>>> pybedtools.cleanup(remove_all=True)
to remove all files that match the pattern
:file:`/pybedtools.*.tmp` where `` is the current value
of `pybedtools.get_tempdir()`.
If you need to specify a different directory than that used by default by
Python's tempdir_ module, then you can set it with::
>>> pybedtools.set_tempdir('/scratch')
You'll need write permissions to this directory, and it needs to already
exist. All temp files will then be written to that directory, until the
tempdir is changed again.
.. _`similarity principle`:
Principle 2: Names and arguments are as similar as possible to BEDTools_
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
As much as possible, BEDTools programs and :class:`BedTool` methods share
the same names and arguments.
Returning again to this example::
>>> merged_a = a.merge(d=100, s=True)
This demonstrates that the :class:`BedTool` methods that wrap BEDTools_
programs do the same thing and take the exact same arguments as the
BEDTools_ program. Here we can pass `d=100` and `s=True` only because the
underlying BEDTools_ program, `mergeBed`, can accept these arguments.
Need to know what arguments `mergeBed` can take? See the docs for
:meth:`BedTool.merge`; for more on this see :ref:`good docs principle`.
In general, remove the "Bed" from the end of the BEDTools_ program to get
the corresponding :class:`BedTool` method. So there's a
:meth:`BedTool.subtract` method for `subtractBed`, a
:meth:`BedTool.intersect` method for `intersectBed`, and so on.
.. _`version principle`:
Principle 3: Indifference to BEDTools version
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Since :class:`BedTool` methods just wrap BEDTools_ programs, they are as up-to-date as
the version of BEDTools_ you have installed on disk. If you are using a
cutting-edge version of BEDTools_ that has some hypothetical argument
`-z` for `intersectBed`, then you can use `a.intersectBed(z=True)`.
:mod:`pybedtools` will also raise an exception if you try to use a method
that relies on a more recent version of BEDTools than you have installed.
.. _`default args principle`:
Principle 4: Sensible default args
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If we were running the ``mergeBed`` program from the command line, we
would have to specify the input file with the :option:`mergeBed -i` option.
:mod:`pybedtools` assumes that if we're calling the :meth:`merge` method on
the :class:`BedTool`, `a`, we want to operate on the bed file that `a`
points to.
In general, BEDTools_ programs that accept a single BED file as input
(by convention typically specified with the :option:`-i` option) the
default behavior for :mod:`pybedtools` is to use the :class:`BedTool`'s
file (indicated in the :attr:`BedTool.fn` attribute) as input.
We can still pass a file using the `i` keyword argument if we wanted to be
absolutely explicit. In fact, the following two versions produce the same
output:
.. doctest::
>>> # The default is to use existing file for input -- no need
>>> # to specify "i" . . .
>>> result1 = a.merge(d=100, s=True)
>>> # . . . but you can always be explicit if you'd like
>>> result2 = a.merge(i=a.fn, d=100, s=True)
>>> # Confirm that the output is identical
>>> result1 == result2
True
Methods that have this type of default behavior are indicated by the following text in their docstring::
.. note::
For convenience, the file this BedTool object points to is passed as "-i"
There are some BEDTools_ programs that accept two BED files as input, like
``intersectBed`` where the the first file is specified with `-a` and the
second file with `-b`. The default behavior for :mod:`pybedtools` is to
consider the :mod:`BedTool`'s file as `-a` and the first non-keyword
argument to the method as `-b`, like this:
.. doctest::
>>> b = pybedtools.example_bedtool('b.bed')
>>> result3 = a.intersect(b)
This is exactly the same as passing the `a` and `b` arguments explicitly:
.. doctest::
>>> result4 = a.intersect(a=a.fn, b=b.fn)
>>> result3 == result4
True
Furthermore, the first non-keyword argument used as `-b` can either be a
filename *or* another :class:`BedTool` object; that is, these commands also
do the same thing:
.. doctest::
>>> result5 = a.intersect(b=b.fn)
>>> result6 = a.intersect(b=b)
>>> str(result5) == str(result6)
True
Methods that accept either a filename or another :class:`BedTool` instance
as their first non-keyword argument are indicated by the following text in
their docstring::
.. note::
This method accepts either a BedTool or a file name as the first
unnamed argument
.. _`non defaults principle`:
Principal 5: Other arguments have no defaults
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Only the BEDTools_ arguments that refer to BED (or other interval) files have
defaults. In the current version of BEDTools_, this means only the `-i`,
`-a`, and `-b` arguments have defaults. All others have no defaults
specified by :mod:`pybedtools`; they pass the buck to BEDTools programs. This
means if you do not specify the `d` kwarg when calling :meth:`BedTool.merge`,
then it will use whatever the installed version of BEDTools_ uses for `-d`
(currently, `mergeBed`'s default for `-d` is 0).
`-d` is an option to BEDTools_ `mergeBed` that accepts a value, while
`-s` is an option that acts as a switch. In :mod:`pybedtools`, simply
pass a value (integer, float, whatever) for value-type options like `-d`,
and boolean values (`True` or `False`) for the switch-type options like
`-s`.
Here's another example using both types of keyword arguments; the
:class:`BedTool` object `b` (or it could be a string filename too) is
implicitly passed to `intersectBed` as `-b` (see :ref:`default args
principle` above)::
>>> a.intersect(b, v=True, f=0.5)
Again, any option that can be passed to a BEDTools_ program can be passed
to the corresonding :class:`BedTool` method.
.. _`chaining principle`:
Principle 6: Chaining together commands
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Most methods return new :class:`BedTool` objects, allowing you to chain
things together just like piping commands together on the command line. To
give you a flavor of this, here is how you would get the merged regions of
features shared between :file:`a.bed` (as referred to by the
:class:`BedTool` `a` we made previously) and :file:`b.bed`: (as referred to
by the :class:`BedTool` `b`):
.. doctest::
>>> a.intersect(b).merge().saveas('shared_merged.bed')
This is equivalent to the following BEDTools_ commands::
intersectBed -a a.bed -b b.bed | merge -i stdin > shared_merged.bed
Methods that return a new :class:`BedTool` instance are indicated with the following text in their docstring::
.. note::
This method returns a new BedTool instance
.. _`good docs principle`:
Principle 7: Check the help
~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you're unsure of whether a method uses a default, or if you want to read
about what options an underlying BEDTools_ program accepts, check the help.
Each :class:`pyBedTool` method that wraps a BEDTools_ program also wraps
the BEDTools_ program help string. There are often examples of how to use
a method in the docstring as well. The documentation is also run through
doctests, so the code you read here is guaranteed to work and be
up-to-date.
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.. _`topical`:
Topical Documentation
=====================
This section contains additional documentation not covered in the tutorial.
.. toctree::
:maxdepth: 3
topical-design-principles
topical-create-a-bedtool
topical-saving
topical-iterators
topical-low-level-ops
topical-bam
topical-bam-semantics
topical-genome
topical-random
topical-wrapping
topical-comparisons
sh-comparison
pybedtools-dev-history
flow-of-commands
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.. _genomes:
Specifying genomes
==================
This section illustrates the use of genome files for use with BEDTools
programs that need to know chromosome limits to prevent out-of-range
coordinates.
Using BEDTools programs like `slopBed` or `shuffleBed` from the command
line requires "genome" or "chromsizes" files. :mod:`pybedtools` comes with
common genome assemblies already set up as a dictionary with chromosomes as
keys and zero-based (start, stop) tuples as values:
.. doctest::
>>> from pybedtools import genome_registry
>>> genome_registry.dm3['chr2L']
(0, 23011544)
The rules for specifying a genome for methods that require a genome are as
follows (use whatever is most convenient):
* Use `g` to specify either a filename or a dictionary
* Use `genome` to specify either an assembly name or a dictionary
Below are examples of each.
As a file
---------
This is the typical way of using BEDTools programs, by specifying an existing genome
file with `g`:
.. doctest::
:hide:
>>> fn = pybedtools.chromsizes_to_file(pybedtools.chromsizes('hg19'), fn='hg19.genome')
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = a.slop(b=100, g='hg19.genome')
.. doctest::
:hide:
>>> import os
>>> os.unlink('hg19.genome')
As a string
-----------
This is probably the most convenient way of specifying a genome. If the
genome exists in the genome registry it will be used directly. Alternatively,
if you have `genomepy`_
installed, you can use the genomepy genome name, such as `hg38`. In this case,
the genome file will be located automatically. Finally, if the genome is not
in the registry or managed by genomepy, it will automatically be downloaded
from UCSC. You must use the `genome` kwarg for this; if you use `g` a string
will be interpreted as a filename:
.. doctest::
>>> c = a.slop(b=100, genome='hg19')
As a dictionary
---------------
This is a good way of providing custom coordinates; either `g` or `genome`
will accept a dictionary:
.. doctest::
>>> d = a.slop(b=100, g={'chr1':(1, 10000)})
>>> e = a.slop(b=100, genome={'chr1':(1,100000)})
Make sure that all these different methods return the same results
.. doctest::
>>> b == c == d == e
True
Converting to a file
--------------------
Since BEDTools programs operate on files, the fastest choice will be to
use an existing file. While the time to convert a dictionary to a file is
extremely small, over 1000's of files (e.g., for Monte Carlo simulations),
the time may add up. The function :func:`pybedtools.chromsizes_to_file`
will create a file from a dictionary or string:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # with no filename specified, a tempfile will be created
>>> pybedtools.chromsizes_to_file(pybedtools.chromsizes('dm3'), 'dm3.genome')
'dm3.genome'
>>> print(open('dm3.genome').read())
chr2L 23011544
chr2LHet 368872
chr2R 21146708
chr2RHet 3288761
chr3L 24543557
chr3LHet 2555491
chr3R 27905053
chr3RHet 2517507
chr4 1351857
chrM 19517
chrU 10049037
chrUextra 29004656
chrX 22422827
chrXHet 204112
chrYHet 347038
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.. _`BedTools as iterators`:
Using BedTool objects as iterators/generators
=============================================
Typically, :mod:`BedTool` objects are used somewhat like handles to individual
files on disk that contain BED lines. To save disk space, :mod:`BedTool`
objects also have the ability to "stream", much like piping in Unix. That
is, the data are created only one line at a time in memory, instead of
either creating a list of all data in memory or writing all data to disk.
.. note::
You'll need to be careful when using :mod:`BedTool` objects as
generators, since any operation that reads all the features of a
:mod:`BedTool` will consume the iterable.
To get a streaming BedTool, use the `stream=True` kwarg. This
:class:`BedTool` will act a little differently from a standard, file-based
:class:`BedTool`.
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.intersect(b, stream=True)
>>> # checking the length consumes the iterator
>>> len(c)
3
>>> # nothing left, so checking length again returns 0
>>> len(c)
0
In some cases, a stream may be "rendered" to a temp file. This is because
BEDTools programs can only accept one input file as `stdin`. This is typically
the first input (`-i` or `-a`), while the other input (`-b`) must be a file.
Consider this example, where the second intersection needs to convert the
streaming BedTool to a file before sending to `intersectBed`:
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> # first we set up a streaming BedTool:
>>> c = a.intersect(b, stream=True)
>>> # But supplying a streaming BedTool as the first unnamed argument
>>> # means it is being passed as -b to intersectBed, and so must be a file.
>>> # In this case, `c` is rendered to a tempfile before being passed.
>>> d = a.intersect(c, stream=True)
.. warning::
Chaining two streaming BedTool objects together? You'll need to be
careful, because sometimes this will result in deadlocks. You'll see zero
CPU usage as pybedtools tries to write to the stdin of a downstream BedTool
object.
For example, for two BedTool objects pointing to files that have >5000
features, the following usually blocks::
len(a.intersect(b, stream=True).intersect(a, stream=True))
The solution is to save to a tempfile first, or use non-streaming BedTools.
All of the following will work fine::
>>> # only use file-based
>>> len(a.intersect(b).intersect(a))
>>> # using the second streaming BedTool is fine
>>> len(a.intersect(b).intersect(a, stream=True))
>>> # if you have a streaming BedTool, "render" it to a tempfile with
>>> # saveas()
>>> len(a.intersect(b, stream=True).saveas().intersect(a))
There's a nice explanation of blocking along with figures at
http://www.pixelbeat.org/programming/stdio_buffering/. Most solutions to
this blocking problem on stackoverflow suggest using threads, but in my
test cases this tends to make interactive IPython sessions act strangely.
Another option is to try pexpect, but I have been unable to get this to
work and it requires an additional dependency.
Contributions to help solve this would be most appreciated!
Example references:
* http://stackoverflow.com/questions/1595492/blocks-send-input-to-python-subprocess-pipeline
* http://stackoverflow.com/questions/375427/non-blocking-read-on-a-subprocess-pipe-in-python
* http://www.python.org/dev/peps/pep-3145/
* http://stackoverflow.com/questions/3076542/how-can-i-read-all-availably-data-from-subprocess-popen-stdout-non-blocking/3078292#3078292
* http://stackoverflow.com/questions/3140189/subprocess-popen-stdout-reading-stdout-in-real-time-again (and references therein)
Creating a :class:`BedTool` from an iterable
--------------------------------------------
You can create a :class:`BedTool` on the fly from a generator or iterator -- in
fact, this is what the :meth:`BedTool.filter` method does for you:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> print(a)
chr1 1 100 feature1 0 +
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
>>> b = pybedtools.BedTool(f for f in a if f.start > 200)
>>> # this is the same as using filter:
>>> c = a.filter(lambda x: x.start > 200)
We need to "render" these BedTools to string before we can check equality
-- consuming them both -- since they are both iterables for which `==` is
not defined:
.. doctest::
:options: +ELLIPSIS
>>> b == c
Traceback (most recent call last):
...
NotImplementedError: Testing equality only supported for BedTools that point to a file
>>> str(b) == str(c)
True
Indexing a :class:`BedTool`
---------------------------
In some cases it may be useful to index into a :class:`BedTool` object. We can
use standard list slice syntax, and get an iterable of :class:`Interval`
objects as a result. This iterable can in turn be used to create a new :class:`BedTool` instance:
.. doctest::
:options: +NORMALIZE_WHITESPACE +ELLIPSIS
>>> a = pybedtools.example_bedtool('a.bed')
>>> a[2:4]
>>> for i in a[2:4]:
... print(i)
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
>>> b = pybedtools.example_bedtool('b.bed')
>>> print(pybedtools.BedTool(a[:3]).intersect(b))
chr1 155 200 feature2 0 +
chr1 155 200 feature3 0 -
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Low-level operations
--------------------
We can use the :meth:`BedTool.as_intervalfile` method to return an
:class:`IntervalFile` instance. This class provides low-level support to
the BEDTools C++ API.
The method :meth:`IntervalFile.all_hits` takes a single :class:`Interval`
as the query and returns a list of all features in the
:class:`IntervalFile` that intersect:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> a = pybedtools.example_bedtool('a.bed')
>>> ivf = a.as_intervalfile()
>>> query = a[2]
>>> ivf.all_hits(query)
[Interval(chr1:100-200), Interval(chr1:150-500)]
Similarly, we can just return if there were *any* hits, a much faster
operation:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> ivf.any_hits(query)
1
Or count how many hits:
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> ivf.count_hits(query)
2
See the docstrings for :meth:`IntervalFile.all_hits`,
:meth:`IntervalFile.any_hits`, and :meth:`IntervalFile.count_hits` for
more, including stranded hits and restricting hits to a specific overlap.
.. note::
These methods are now available as :class:`BedTool` methods,
:meth:`BedTool.all_hits`, :meth:`BedTool.any_hits`, and
:meth:`BedTool.count_hits`
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Randomization
=============
:mod:`pybedtools` provides some basic functionality for assigning some
significance value to the overlap between two BEDfiles.
The strategy is to randomly shuffle a file many times, each time doing an
intersection with another file of interest and counting the number of
intersections (or computing some other statistic on the overlap). Upon doing
this many times, an empirical distribution is constructed, and the number of
intersections between the original, un-shuffled file is compared to this
empirical distribution to obtain a p-value, or compared to the median of the
distribution to get a score.
There are two methods, :meth:`pybedtools.BedTool.randomintersection` which does the
brute force randomizations, and :meth:`BedTool.randomstats` which compiles
and reports the results from the former method.
Example workflow
----------------
As a somewhat trivial example, we'll intersect the example `a.bed` with
`b.bed`, taking care to set some options that will let it run in a
determinisitic way so that these tests will run.
We will be shuffling `a.bed`, so we'll need to specify the limits of its
chromosomes with :meth:`BedTool.set_chromsizes`. Here, we set it to an
artifically small chromosome size so that we can get some meaningful
results in reasonable time. In practice, you would either supply your own
dictionary or use a string assembly name (e.g., `'hg19'`, `'mm9'`, `'dm3'`,
etc). The genome-handling code will find the chromsizes we've set, so
there's no need to tell `shuffleBed` which genome file to use each time.
.. doctest::
>>> chromsizes = {'chr1': (0, 1000)}
>>> a = pybedtools.example_bedtool('a.bed').set_chromsizes(chromsizes)
>>> b = pybedtools.example_bedtool('b.bed')
We have the option of specifying what kwargs to provide
:meth:`BedTool.shuffle` and :meth:`BedTool.intersect`, which will be called
each iteration. In this example, we'll tell `shuffleBed` to only shuffle
within the chromsome just to illustrate the kwargs passing. We also need to
specify how many iterations to perform. In practice, 1000 or 10000 are
good numbers, but for the sake of this example we'll only do 100.
Last, setting `debug=True` means that the random seed will be set in a
predictable manner so that we'll always get the same results for testing.
In practice, make sure you use `debug=False` (the default) to ensure random
results.
Furthermore, using the `processes` kwarg will substantially speed up the
comparison (e.g., `processes=8` to split the randomizations across 8 cores).
.. doctest::
>>> results = a.randomintersection(b, iterations=100, shuffle_kwargs={'chrom': True}, debug=True)
`results` is a generator of intersection counts where each number is the
number of times the shuffled `a` intersected with `b`. We need to convert
it to a list in order to look at it:
.. doctest::
>>> results = list(results)
>>> len(results)
100
>>> print(results[:10])
[1, 0, 1, 2, 4, 2, 2, 1, 2, 4]
Running thousands of iterations on files with many features will of course
result in more complex results. We could then take these results and plot
them in matplotlib, or get some statistics on them.
The method :meth:`BedTool.randomstats` does this for us, but requires NumPy
and SciPy to be installed. This method also calls
:meth:`BedTool.randomintersection` for us, returning the summarized results
in a dictionary.
:meth:`BedTool.randomstats` takes the same arguments as
:meth:`BedTool.randomintersection`:
.. doctest::
>>> results_dict = a.randomstats(b, iterations=100, shuffle_kwargs={'chrom': True}, debug=True)
The keys to this results dictionary are as follows (some are redundant,
I've found these keys useful for writing out to file):
:iterations:
the number of iterations we specified
:actual:
the number of intersections between then un-shuffled `a` and `b`
:file_a:
the filename of `a`
:file_b:
the filename of `b`
::
the key is actully the filename of `a`, and the value is the number of
features in `a`
::
the key is actually the filename of `b` and the value is the number of
features in `b`
:self:
number of features in `a` (or "self"; same value as for )
:other:
number of features in `b` (or "other"; same value as for )
:frac randomized above actual: fraction of iterations that had counts above the actual count
:frac randomized below actual:
fraction of iterations that had counts below the actual count
:median randomized:
the median of the distribution of randomized intersections
:normalized:
the actual count divided by the median; can be considered as a score
:percentile:
the percentile of actual within the distribution of randomized
intersections; can be considered an empirical p-value
:upper 97.5th:
the 97.5th percentile of the randomized distribution
:lower 2.5th:
the 2.5th percentile of the randomized distribution
For example:
.. doctest::
>>> keys = ['self', 'other', 'actual', 'median randomized', 'normalized', 'percentile']
>>> for key in keys:
... print('%s: %s' % (key, results_dict[key]))
self: 4
other: 2
actual: 3
median randomized: 2.0
normalized: 1.5
percentile: 90.0
Contributions toward improving this code or implementing other methods of
statistical testing are very welcome!
Other statistics
----------------
In practice, a comparison between two sets of features (say, two transcription
factors) with 1000 randomizations will have an empirical p-value of < 0.001.
That is, out of all the randomizations performed, every single one had fewer
intersections than the original. Of course the resolution of the p-value is
dependent on the number of randomizations: the lowest nonzero p-value for
10000 iterations will be 0.0001. Getting a non-zero p-value often requires
doing more randomizations than is practical (several million to tens of
millions).
That's where the enrichment score comes in. The randomized intersections
typically have a normal distribution, but just in case, we take the median of
the randomized intersections and call this the background or control. Then we
divide the actual intersections by this median to get an enrichment score.
The advantage to using the enrichment score is that it gives nonzero scores for
more fine-grained comparison among sets of features without performing
impractical amounts of randomization. The first example of its usage that I'm
aware of is Negre et al. (2010) PLoS Genet 6(1): e1000814, The downside of
this metric is that the numbers are relative, and have their greatest utility
for making biological conclusions when used in large matrices of pairwise
comparisons.
:meth:`BedTool.randomintersection` and :meth:`BedTool.randomstats` both use the
intersection count method. That is, for each randomization the calculated
metric is "number of intersection events". An alternative is to compute the
Jaccard statistic on each iteration, as implemented in
:meth:`BedTool.naive_jaccard`. The Jaccard statistic (or Jaccard similarity) is
the ratio of the intersection over the union, and is introduced in a genomic
intersection context in Favorov et al. (2012) PLoS Comput Biol 8(5): e1002529.
However, this still has the same p-value resolution limitation, so the
actual-divided-by-median approach could be tried here as well.
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Saving :class:`BedTool` results
===============================
In general, there are three different ways of saving results from
:class:`BedTool` operations:
Use the :meth:`BedTool.saveas` method
-------------------------------------
The :meth:`BedTool.saveas` method makes a **copy** of the results, so beware
that for large files, this can be time and/or memory-consuming. However, when
working with a streaming or iterating :class:`BedTool`, this is a great way to
render the results to disk in the middle of a pipeline.
A good example of this is saving the results from a :meth:`BedTool.each` call:
.. doctest::
>>> from pybedtools.featurefuncs import TSS
>>> a = pybedtools.example_bedtool('a.bed')
>>> result = a.each(TSS, upstream=1000, downstream=0)\
... .saveas('upstream_regions.bed')
Use the :meth:`BedTool.moveto` method
-------------------------------------
The :meth:`BedTool.moveto` method does a **move** operation of the results.
This is best used when the results have been written to disk already (perhaps
to a tempfile) but you'd like to give the file a more reasonable/memorable
name.
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.intersect(b).moveto('intersection_of_a_and_b.bed')
Use the ``output`` keyword argument
-----------------------------------
If you know ahead of time that you want to save the output to a particular
file, use the ``output`` keyword argument to any wrapped :class:`BedTool`
method that returns another :class:`BedTool` object. This will override the
default behavior of creating a tempfile.
.. doctest::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.intersect(b, output='intersection_of_a_and_b.bed')
Working with non-interval output files
--------------------------------------
`BEDTools` commands offer lots of flexibility. This means it is possible to
return results that are not supported interval files like
BED/GFF/GTF/BAM/SAM/VCF.
Consider the following example, which uses :meth:`BedTool.groupby` to get
a 2-column file containing the number of intervals in each featuretype:
.. doctest::
>>> a = pybedtools.example_bedtool('gdc.gff')
>>> b = pybedtools.example_bedtool('gdc.bed')
>>> c = a.intersect(b, c=True)
>>> d = c.groupby(g=[3], c=10, o=['sum'])
We can read the file created by `d` looks like this:
(note: the latest version of BEDTools, v2.26.0, causes this to fail. This will
be fixed in the next BEDTools release (see
https://github.com/arq5x/bedtools2/issues/453,
https://github.com/arq5x/bedtools2/issues/450,
https://github.com/arq5x/bedtools2/issues/435,
https://github.com/arq5x/bedtools2/issues/436 for details).
.. doctest::
:options: +NORMALIZE_WHITESPACE
>>> # bedtools v2.26.0
>>> print(open(d.fn).read())
UTR 0
CDS 2
intron 4
CDS 0
UTR 1
exon 3
mRNA 7
CDS 2
exon 2
tRNA 2
gene 7
Trying to iterate over `d` (`[i for i in d]`) or save it (`d.saveas()`) raises
exceptions. This is because:
* `saveas()` is expected to return a `BedTool` object that can be
used with other `BEDTools` tools. We can't create a `BedTool` object out of
an unsupported file format like this
* iterating over a `BedTool` object is expected to yield `Interval` objects,
but these lines can't be converted into the supported formats
To save the output to a filename of your choosing, provide the `output`
argument instead of `saveas()`, like this:
.. doctest::
>>> # only works with bedtools != v2.26.0
>>> # d = c.groupby(g=[3], c=10, o=['sum'], output='counts.txt')
To iterate over the lines of the file, you can use standard Python
tools, e.g.:
.. doctest::
>>> # only works with bedtools != v2.26.0
>>> # for line in open(d.fn):
>>> # featuretype, count = line.strip().split()
pybedtools-0.9.0/docs/source/topical-wrapping.rst 0000664 0000000 0000000 00000010717 14173526301 0022156 0 ustar 00root root 0000000 0000000 Wrapping new tools
==================
This section serves as a reference for wrapping new tools as they are added to
BEDTools.
Example program description
---------------------------
Let's assume we would like to wrap a new program, appropriately named
`newProgramBed`. Its signature from the command line is `newProgramBed -a
-b [options]`, and it accepts `-a stdin` to indicate
data is being piped to it::
newProgramBed -a -b [options]
Method name
-----------
Generally, I've tried to keep method names as similar as possible to
BEDTools programs while still being PEP8-compliant. The trailing 'Bed' is
usually removed from the program name. So here the name would probably be
`new_program`.
Define a method in :class:`BedTool`
-----------------------------------
Define a method in :class:`BedTool` . . . and *don't add any content to the
function body*. This is because the decorator we're about to add will
replace the method wholesale; anything that's in the function body will
effectively be ignored.
::
def new_program(self):
pass
Add the :func:`_wraps` decorator
--------------------------------
This is where most of the work happens.
Since most of the work of wrapping BEDTools programs needs to happen every
time a new program is wrapped, this work is abstracted out into the
:func:`_wraps` function.
.. note::
The :func:`_wraps` docstring and source is the best place to learn the
details on what it's doing; here we'll focus on using it.
Our hypothetical program, `newProgramBed`, takes `-a` as the first input.
We'd like to have `-a` implicitly be passed as whatever our
:class:`BedTool` already points to, so we use the `implicit='a'` kwarg to
:func:`_wraps` here. `newProgramBed` also takes a second input, `-b`. We
describe that to the wrapper with the `other='b'` kwarg.
Any other keyword args that are used when calling the method will
automatically be passed to the program. So if `newProgramBed` has an
optional `-s` argument, we don't need to specify that here. When the user
passes an `s=True` kwarg, it will be passed automatically to
`newProgramBed` as the argument `-s`. If `newProgramBed` does not accept a
`-z` argument but the user passes one anyway, we rely on the BEDTools
program to do the error-checking of arguments and report any errors back to
Python.
Here's what the new method looks like so far:
::
@_wraps(prog='newProgramBed', implicit='a', other='b')
def new_program(self):
pass
For wrapped programs that expect a genome file or have more complex
arguments, see the docstring and source for :func:`_wrap`.
Add doctests
------------
While the function body will be replaced wholesale by the decorator, the
docstring will be copied to the new function. This is important because it
means we can write meaningful documentation and, even more importantly,
doctests for this method. Writing a doctest within the method's docstring
means it will automatically be found by the test suite.
::
@_wraps(prog='newProgramBed', implicit='a', other='b')
def new_program(self):
"""
Converts all features to length of 1.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.new_program(b, s=True)
>>> print c #+NORMALIZE_WHITESPACE
chr1 1 2
chr1 100 101
chr1 150 151
chr1 900 901
"""
Add to list of known programs
-----------------------------
The last thing to do is to add the new program to the end of the tuple
`pybedtools.helpers._prog_names`. This creates rudimentary security by only
allowing these programs to be called, and acts as sort of a central registry
for programs that have been wrapped.
Summary
-------
That's it! We now have a method, :meth:`BedTool.new_program`, that wraps
a hypothetical `newProgramBed` BEDTools program, will accept any optional
args that `newProgramBed` does, will return a new :class:`BedTool`
containing the results, *and it's tested*.
This new method can be be chained with other :class:`BedTool` instances,
used as an iterator or generator, or anything else a normal
:class:`BedTool` can do . . . for example::
a = pybedtools.example_bed('a.bed')
b = pybedtools.example_bed('b.bed')
c = a.new_program(b, s=True).filter(lambda x: x.start < 125).saveas('t.bed', trackline='track name="one-bp features"')
.. _decorator: http://www.python.org/dev/peps/pep-0318/
pybedtools-0.9.0/docs/source/tutorial-contents.rst 0000664 0000000 0000000 00000000361 14173526301 0022366 0 ustar 00root root 0000000 0000000 .. _tutorial:
Tutorial Contents
=================
.. toctree::
:maxdepth: 3
intro
create-a-bedtool-tutorial
intersections
save-results
default-arguments
piping
intervals
filtering
each
history
pybedtools-0.9.0/ez_setup.py 0000664 0000000 0000000 00000026252 14173526301 0016125 0 ustar 00root root 0000000 0000000 #!/usr/bin/env python
"""
Setuptools bootstrapping installer.
Run this script to install or upgrade setuptools.
"""
import os
import shutil
import sys
import tempfile
import zipfile
import optparse
import subprocess
import platform
import textwrap
import contextlib
import warnings
from distutils import log
try:
from urllib.request import urlopen
except ImportError:
from urllib2 import urlopen
try:
from site import USER_SITE
except ImportError:
USER_SITE = None
DEFAULT_VERSION = "17.1.1"
DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/"
DEFAULT_SAVE_DIR = os.curdir
def _python_cmd(*args):
"""
Execute a command.
Return True if the command succeeded.
"""
args = (sys.executable,) + args
return subprocess.call(args) == 0
def _install(archive_filename, install_args=()):
"""Install Setuptools."""
with archive_context(archive_filename):
# installing
log.warn('Installing Setuptools')
if not _python_cmd('setup.py', 'install', *install_args):
log.warn('Something went wrong during the installation.')
log.warn('See the error message above.')
# exitcode will be 2
return 2
def _build_egg(egg, archive_filename, to_dir):
"""Build Setuptools egg."""
with archive_context(archive_filename):
# building an egg
log.warn('Building a Setuptools egg in %s', to_dir)
_python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
# returning the result
log.warn(egg)
if not os.path.exists(egg):
raise IOError('Could not build the egg.')
class ContextualZipFile(zipfile.ZipFile):
"""Supplement ZipFile class to support context manager for Python 2.6."""
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
def __new__(cls, *args, **kwargs):
"""Construct a ZipFile or ContextualZipFile as appropriate."""
if hasattr(zipfile.ZipFile, '__exit__'):
return zipfile.ZipFile(*args, **kwargs)
return super(ContextualZipFile, cls).__new__(cls)
@contextlib.contextmanager
def archive_context(filename):
"""
Unzip filename to a temporary directory, set to the cwd.
The unzipped target is cleaned up after.
"""
tmpdir = tempfile.mkdtemp()
log.warn('Extracting in %s', tmpdir)
old_wd = os.getcwd()
try:
os.chdir(tmpdir)
with ContextualZipFile(filename) as archive:
archive.extractall()
# going in the directory
subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
os.chdir(subdir)
log.warn('Now working in %s', subdir)
yield
finally:
os.chdir(old_wd)
shutil.rmtree(tmpdir)
def _do_download(version, download_base, to_dir, download_delay):
"""Download Setuptools."""
egg = os.path.join(to_dir, 'setuptools-%s-py%d.%d.egg'
% (version, sys.version_info[0], sys.version_info[1]))
if not os.path.exists(egg):
archive = download_setuptools(version, download_base,
to_dir, download_delay)
_build_egg(egg, archive, to_dir)
sys.path.insert(0, egg)
# Remove previously-imported pkg_resources if present (see
# https://bitbucket.org/pypa/setuptools/pull-request/7/ for details).
if 'pkg_resources' in sys.modules:
del sys.modules['pkg_resources']
import setuptools
setuptools.bootstrap_install_from = egg
def use_setuptools(
version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=DEFAULT_SAVE_DIR, download_delay=15):
"""
Ensure that a setuptools version is installed.
Return None. Raise SystemExit if the requested version
or later cannot be installed.
"""
to_dir = os.path.abspath(to_dir)
# prior to importing, capture the module state for
# representative modules.
rep_modules = 'pkg_resources', 'setuptools'
imported = set(sys.modules).intersection(rep_modules)
try:
import pkg_resources
pkg_resources.require("setuptools>=" + version)
# a suitable version is already installed
return
except ImportError:
# pkg_resources not available; setuptools is not installed; download
pass
except pkg_resources.DistributionNotFound:
# no version of setuptools was found; allow download
pass
except pkg_resources.VersionConflict as VC_err:
if imported:
_conflict_bail(VC_err, version)
# otherwise, unload pkg_resources to allow the downloaded version to
# take precedence.
del pkg_resources
_unload_pkg_resources()
return _do_download(version, download_base, to_dir, download_delay)
def _conflict_bail(VC_err, version):
"""
Setuptools was imported prior to invocation, so it is
unsafe to unload it. Bail out.
"""
conflict_tmpl = textwrap.dedent("""
The required version of setuptools (>={version}) is not available,
and can't be installed while this script is running. Please
install a more recent version first, using
'easy_install -U setuptools'.
(Currently using {VC_err.args[0]!r})
""")
msg = conflict_tmpl.format(**locals())
sys.stderr.write(msg)
sys.exit(2)
def _unload_pkg_resources():
del_modules = [
name for name in sys.modules
if name.startswith('pkg_resources')
]
for mod_name in del_modules:
del sys.modules[mod_name]
def _clean_check(cmd, target):
"""
Run the command to download target.
If the command fails, clean up before re-raising the error.
"""
try:
subprocess.check_call(cmd)
except subprocess.CalledProcessError:
if os.access(target, os.F_OK):
os.unlink(target)
raise
def download_file_powershell(url, target):
"""
Download the file at url to target using Powershell.
Powershell will validate trust.
Raise an exception if the command cannot complete.
"""
target = os.path.abspath(target)
ps_cmd = (
"[System.Net.WebRequest]::DefaultWebProxy.Credentials = "
"[System.Net.CredentialCache]::DefaultCredentials; "
"(new-object System.Net.WebClient).DownloadFile(%(url)r, %(target)r)"
% vars()
)
cmd = [
'powershell',
'-Command',
ps_cmd,
]
_clean_check(cmd, target)
def has_powershell():
"""Determine if Powershell is available."""
if platform.system() != 'Windows':
return False
cmd = ['powershell', '-Command', 'echo test']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_powershell.viable = has_powershell
def download_file_curl(url, target):
cmd = ['curl', url, '--silent', '--output', target]
_clean_check(cmd, target)
def has_curl():
cmd = ['curl', '--version']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_curl.viable = has_curl
def download_file_wget(url, target):
cmd = ['wget', url, '--quiet', '--output-document', target]
_clean_check(cmd, target)
def has_wget():
cmd = ['wget', '--version']
with open(os.path.devnull, 'wb') as devnull:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
return True
download_file_wget.viable = has_wget
def download_file_insecure(url, target):
"""Use Python to download the file, without connection authentication."""
src = urlopen(url)
try:
# Read all the data in one block.
data = src.read()
finally:
src.close()
# Write all the data in one block to avoid creating a partial file.
with open(target, "wb") as dst:
dst.write(data)
download_file_insecure.viable = lambda: True
def get_best_downloader():
downloaders = (
download_file_powershell,
download_file_curl,
download_file_wget,
download_file_insecure,
)
viable_downloaders = (dl for dl in downloaders if dl.viable())
return next(viable_downloaders, None)
def download_setuptools(
version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=DEFAULT_SAVE_DIR, delay=15,
downloader_factory=get_best_downloader):
"""
Download setuptools from a specified location and return its filename.
`version` should be a valid setuptools version number that is available
as an sdist for download under the `download_base` URL (which should end
with a '/'). `to_dir` is the directory where the egg will be downloaded.
`delay` is the number of seconds to pause before an actual download
attempt.
``downloader_factory`` should be a function taking no arguments and
returning a function for downloading a URL to a target.
"""
# making sure we use the absolute path
to_dir = os.path.abspath(to_dir)
zip_name = "setuptools-%s.zip" % version
url = download_base + zip_name
saveto = os.path.join(to_dir, zip_name)
if not os.path.exists(saveto): # Avoid repeated downloads
log.warn("Downloading %s", url)
downloader = downloader_factory()
downloader(url, saveto)
return os.path.realpath(saveto)
def _build_install_args(options):
"""
Build the arguments to 'python setup.py install' on the setuptools package.
Returns list of command line arguments.
"""
return ['--user'] if options.user_install else []
def _parse_args():
"""Parse the command line for options."""
parser = optparse.OptionParser()
parser.add_option(
'--user', dest='user_install', action='store_true', default=False,
help='install in user site package (requires Python 2.6 or later)')
parser.add_option(
'--download-base', dest='download_base', metavar="URL",
default=DEFAULT_URL,
help='alternative URL from where to download the setuptools package')
parser.add_option(
'--insecure', dest='downloader_factory', action='store_const',
const=lambda: download_file_insecure, default=get_best_downloader,
help='Use internal, non-validating downloader'
)
parser.add_option(
'--version', help="Specify which version to download",
default=DEFAULT_VERSION,
)
parser.add_option(
'--to-dir',
help="Directory to save (and re-use) package",
default=DEFAULT_SAVE_DIR,
)
options, args = parser.parse_args()
# positional arguments are ignored
return options
def _download_args(options):
"""Return args for download_setuptools function from cmdline args."""
return dict(
version=options.version,
download_base=options.download_base,
downloader_factory=options.downloader_factory,
to_dir=options.to_dir,
)
def main():
"""Install or upgrade setuptools and EasyInstall."""
options = _parse_args()
archive = download_setuptools(**_download_args(options))
return _install(archive, _build_install_args(options))
if __name__ == '__main__':
sys.exit(main())
pybedtools-0.9.0/optional-requirements.txt 0000664 0000000 0000000 00000000137 14173526301 0021016 0 ustar 00root root 0000000 0000000 bedtools
genomepy>=0.8
matplotlib
ucsc-bigwigtobedgraph
ucsc-bedgraphtobigwig
ucsc-wigtobigwig
pybedtools-0.9.0/pybedtools/ 0000775 0000000 0000000 00000000000 14173526301 0016072 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/pybedtools/_Window.pyx 0000664 0000000 0000000 00000016644 14173526301 0020255 0 ustar 00root root 0000000 0000000 # cython: profile=True
import os
from collections import deque
cdef class Window(object):
cdef public object iterable
cdef public object low_reads
cdef public object high_reads
cdef public int windowsize
cdef int center
cdef int left_edge
cdef int right_edge
cdef str chrom
cdef public int debug
cdef public object buffered_read
cdef int START
def __init__(self, iterable, windowsize=100, debug=0):
"""
Constructor:
Window(iterable, windowsize=100, debug=0)
Moving window over an *iterable* of features (e.g., IntervalFile(fn)) of
size *windowsize*. Use *debug=1* to see all sorts of output for
double-checking.
The resulting Window instance can be iterated over. Each iteration
returns a tuple of::
(center, low_reads, high_reads)
where *center* is the current center of the window; *low_reads* is a
deque of reads that includes the center and everything lower than it
that fits within the window; and *high_reads* is a deque of reads that
includes everything higher within the window.
The strategy is to hold one read as the "centered read", which is
currently in focus. Reads are checked to see if they fit within the
window centered on this read. There is always a buffered read, which
is last read taken from the iterable. If the buffered read doesn't fit
in the window, it remains the buffered read until the current window is
returned. It will continue to remain the buffered read (and no more
reads will be taken from the iterable) until it fits within the current
window.
The window is implemented in two parts, a low_reads and a high_reads
part.
The next window's center jumps to the next available read position,
rather than the next available bp. This can greatly save on running
time. The next available read position will typically be the first
item in the high_reads deque.
"""
self.iterable = iterable
self.windowsize = windowsize
self.left_edge = 0
self.right_edge = 0
self.debug = debug
# Here we pull the first thing from the iterable to set up the various
# attributes
first_read = self.iterable.next()
self.chrom = first_read.chrom
first_start_pos = first_read.start
self.left_edge = first_start_pos - self.windowsize/2
self.right_edge = self.left_edge + self.windowsize
self.center = first_start_pos
self.buffered_read = first_read
self.high_reads = deque()
self.low_reads = deque([self.buffered_read])
self.START = 1
cdef int accumulate_reads(self) except -1:
"""
Fill up the window surrounding the currently-centered read.
"""
if self.debug:
print 'appending:\n\t',
while True:
# Need to short-circuit if starting, cause we've already filled
# buffered_read
if self.START:
self.START = 0
self.buffered_read = self.iterable.next()
continue
if self.buffered_read.chrom != self.chrom:
if self.debug:
print 'new chrom -- %s' % self.buffered_read.chrom
break
# While accumulating, the only time low_reads will fill up is if
# they are duplicates of the currently-centered read
if self.buffered_read.start == self.center:
if self.debug:
print self.buffered_read.start,
self.low_reads.append(self.buffered_read)
# Otherwise, if it's within the window then it's added to
# high_reads.
elif self.buffered_read.start < self.right_edge:
if self.debug:
print self.buffered_read.start,
self.high_reads.append(self.buffered_read)
else:
break
# The positioning of this is important -- we only get a new
# buffered read if the last buffered read has been treated --
# either added to low_reads or high_reads
self.buffered_read = self.iterable.next()
if self.debug:
print
return 0
cdef int trim(self):
"""
Trims reads off window edges, which is basically just shifting the
window.
"""
# If there is nothing in the high reads, then use the current buffered
# read as the center.
if len(self.high_reads) == 0:
self.center = self.buffered_read.start
self.chrom = self.buffered_read.chrom
self.left_edge = self.center - self.windowsize/2
self.right_edge = self.center + self.windowsize/2
# Otherwise, use the next read in the high_reads deque
else:
self.chrom = self.high_reads[0].chrom
self.center = self.high_reads[0].start
self.left_edge = self.center - self.windowsize/2
self.right_edge = self.center + self.windowsize/2
# Now that the center point has been reset, remove reads from low_reads
# list that no longer fit in the window
if self.debug:
print 'removed:',
while True:
# Must be a better way to do this other than popping it off and
# then back on again if it's in range, though the appendleft will
# only happen during one (i.e. the last) time through the loop
try:
popped = self.low_reads.popleft()
if (popped.start < self.left_edge) or (popped.chrom != self.buffered_read.chrom):
if self.debug:
print popped.start,
continue
else:
self.low_reads.appendleft(popped)
break
# If there's nothing left in the low_reads, then stop removing
except IndexError:
break
# Next we remove any additional reads that are duplicates of the
# centered read and add these to low_reads
while True:
try:
popped = self.high_reads.popleft()
if popped.start == self.center:
self.low_reads.append(popped)
else:
self.high_reads.appendleft(popped)
break
except IndexError:
break
# Run accumulator again to see if we can add the current buffered read
# and/or any additional reads to the window.
#self.accumulate_reads()
if self.debug:
print
return 0
def __iter__(self):
return self
def __next__(self):
if not self.START:
# This moves the window...
self.trim()
# First we accumulate reads
self.accumulate_reads()
if self.debug:
print 'chrom :', self.chrom
print 'left :', self.left_edge
print 'center :', self.center
print 'right :', self.right_edge
print 'low contents :', [i.start for i in self.low_reads]
print 'high contents:', [i.start for i in self.high_reads]
print 'buffer :', self.buffered_read.start
return self.center, self.low_reads, self.high_reads
pybedtools-0.9.0/pybedtools/__init__.py 0000664 0000000 0000000 00000007554 14173526301 0020216 0 ustar 00root root 0000000 0000000 import os
import sys
import subprocess
import tempfile
import logging
from six.moves import urllib
from six.moves import copyreg
from .cbedtools import (
Interval,
IntervalFile,
overlap,
Attributes,
MalformedBedLineError,
IntervalIterator,
)
from . import contrib
from .helpers import (
get_tempdir,
set_tempdir,
cleanup,
find_tagged,
set_bedtools_path,
chromsizes,
get_chromsizes_from_ucsc,
chromsizes_to_file,
create_interval_from_list,
)
from . import helpers
from .bedtool import BedTool
from . import genome_registry
from . import stats
from .version import __version__
from .filenames import data_dir, example_filename, list_example_files
from .bedtool import example_bedtool
from . import settings
from .logger import logger, ch
example_files = ["a.bed.", "b.bed", "test.fa", "a.bam"]
def debug_mode(x):
"""
Enable debug mode.
Use debug_mode(True) to show debug log events in the console and to save
calling info in BedTool objects, and turn it off again with
debug_mode(False).
Note that `pybedtools.KEEP_TEMPFILES` will be set as well, so you will need
to clean up the tempfile directory manually after using debug mode.
"""
if x:
logger.setLevel(logging.DEBUG)
ch.setLevel(logging.DEBUG)
_DEBUG = True
KEEP_TEMPFILES = True
logger.info(
"Debug mode enabled. You may also want to set "
"pybedtools.KEEP_TEMPFILES=True to prevent automatic deletion "
"of files upon exit."
)
else:
logger.setLevel(logging.INFO)
ch.setLevel(logging.INFO)
_DEBUG = False
KEEP_TEMPFILES = False
logger.info("Debug mode disabled")
def check_for_bedtools(*args, **kwargs):
"""
For backwards compatibility; please use helpers._check_for_bedtools()
"""
return helpers._check_for_bedtools(*args, **kwargs)
# Allow Interval objects to be pickled -- required if you want to pass them
# across process boundaries
def interval_constructor(fields):
return create_interval_from_list(list(fields))
def interval_reducer(interval):
return interval_constructor, (tuple(interval.fields),)
copyreg.pickle(Interval, interval_reducer, interval_constructor)
def load_path_config(fn):
"""
You can use a config file to specify installation paths of various programs
used by pybedtools. This can be useful for testing, or using different
versions of programs.
`fn` is a config file with the following format. If an entry is blank,
then assume it's already on the path. All items must be lowercase::
[paths]
bedtools=/tools/BEDTools/bin
r=
tabix=
bgzip=
You only need to specify paths you need to change, so this is a valid file
that will only specify the path to use for R::
[paths]
r=/usr/bin/R-dev
If `fn` is not a string, then assume it is a dictionary of (program,
paths). This is used primarily for testing.
"""
setters = dict(
bedtools=helpers.set_bedtools_path,
r=helpers.set_R_path,
tabix=helpers.set_tabix_path,
bgzip=helpers.set_bgzip_path,
)
if isinstance(fn, dict):
for prog, setter in list(setters.items()):
try:
path = fn[prog]
setter(path)
except KeyError:
pass
if isinstance(fn, str):
from six.moves import configparser
c = configparser.SafeConfigParser()
c.read(fn)
if c.sections() != ["paths"]:
raise ValueError(
"Invalid path config -- must have " "only one section, [paths]."
)
for prog, setter in list(setters.items()):
try:
path = c.get("paths", prog)
setter(path)
except configparser.NoOptionError:
pass
pybedtools-0.9.0/pybedtools/bedtool.py 0000664 0000000 0000000 00000405321 14173526301 0020101 0 ustar 00root root 0000000 0000000 import tempfile
from textwrap import dedent
import shutil
import subprocess
import operator
import os
import sys
import random
import string
import pprint
from itertools import islice
import multiprocessing
import six
import gzip
import pysam
from warnings import warn
from .helpers import (
get_tempdir,
_tags,
call_bedtools,
_flatten_list,
_check_sequence_stderr,
isBAM,
isBGZIP,
isGZIP,
BEDToolsError,
pybedtoolsError,
_call_randomintersect,
SplitOutput,
)
from . import helpers
from .cbedtools import (
IntervalFile,
IntervalIterator,
Interval,
create_interval_from_list,
BedToolsFileError,
)
from . import filenames
import pybedtools
from . import settings
from . import filenames
_implicit_registry = {}
_other_registry = {}
_bam_registry = {}
def _jaccard_output_to_dict(s, **kwargs):
"""
jaccard method doesn't return an interval file, rather, it returns a short
summary of results. Here, we simply parse it into a dict for convenience.
"""
if isinstance(s, six.string_types):
_s = open(s).read()
elif hasattr(s, "next") or hasattr(s, "__next__"):
_s = "".join([i for i in s])
else:
raise ValueError("Unexpected object %r" % s)
header, data = _s.splitlines()
header = header.split()
data = data.split()
data[0] = int(data[0])
data[1] = int(data[1])
data[2] = float(data[2])
data[3] = int(data[3])
return dict(list(zip(header, data)))
def _reldist_output_handler(s, **kwargs):
"""
reldist, if called with -detail, returns a valid BED file with the relative
distance as the last field. In that case, return the BedTool immediately.
If not -detail, then the results are a table, in which case here we parse
into a dict for convenience.
"""
if "detail" in kwargs:
return BedTool(s)
if isinstance(s, six.string_types):
iterable = open(s)
if hasattr(s, "next"):
iterable = s
header = six.advance_iterator(iterable).split()
results = {}
for h in header:
results[h] = []
for i in iterable:
reldist, count, total, fraction = i.split()
data = [float(reldist), int(count), int(total), float(fraction)]
for h, d in zip(header, data):
results[h].append(d)
return results
def _wraps(
prog=None,
implicit=None,
bam=None,
other=None,
uses_genome=False,
make_tempfile_for=None,
check_stderr=None,
add_to_bedtool=None,
nonbam=None,
force_bam=False,
genome_none_if=None,
genome_if=None,
genome_ok_if=None,
does_not_return_bedtool=None,
arg_order=None,
):
"""
Do-it-all wrapper, to be used as a decorator.
*prog* is the name of the BEDTools program that will be called. The help
for this program will also be added to the decorated method's docstring.
*implicit* is the BEDTools program arg that should be filled in
automatically.
*bam* will disable the implicit substitution if *bam* is in the kwargs.
This is typically 'abam' or 'ibam' if the program accepts BAM input.
*other* is the BEDTools program arg that is passed in as the second input,
if supported. Within the semantics of BEDTools, the typical case will be
that if implicit='a' then other='b'; if implicit='i' then other=None.
*uses_genome*, if True, will check for 'g' and/or 'genome' args and
retrieve the corresponding genome files as needed.
*make_tempfile_for* is used for the sequence methods and indicates which
kwarg should have a tempfile made for it if it's not provided ('fo' for the
sequence methods)
*check_stderr*, if not None, is a function that accepts a string (which
will be anything written to stdout when calling the wrapped program). This
function should return True if the string is OK, and False if it should
truly be considered an error. This is needed for wrapping fastaFromBed,
which will report to stderr that it's creating an index file.
*add_to_bedtool* is used for sequence methods. It is a dictionary mapping
kwargs to attributes to be created in the resulting BedTool. Typically it
is {'fo':'seqfn'} which will add the resulting sequence name to the
BedTool's .seqfn attribute. If *add_to_bedtool* is not None, then the
returned BedTool will be *self* with the added attribute. If a key is
"stdout" (e.g., {"stdout": attr_name}), then save the stdout of the command
as a tempfile and store the tempfile's name in the attribute. This is
required for linksBed and bedToIgv.
*nonbam* is a kwarg that even if the input file was a BAM, the output will
*not* be BAM format. For example, the `-bed` arg for intersectBed will
cause the output to be in BED format, not BAM. If not None, this can be a
string, a list of strings, or the special string "ALL", which means that
the wrapped program will never return BAM output.
*force_bam*, if True, will force the output to be BAM. This is used for
bedToBam.
*genome_none_if* is a list of arguments that will ignore the requirement
for a genome. This is needed for window_maker, where -b and -g are
mutually exclusive.
*genome_ok_if* is a list of arguments that, if they are in
*genome_none_if*, are still OK to pass in. This is needed for bedtool
genomecov, where -g is not needed if -ibam is specified...but it's still OK
if the user passes a genome arg.
*genome_if* is a list of arguments that will trigger the requirement for
a genome; otherwise no genome needs to be specified.
*does_not_return_bedtool*, if not None, should be a function that handles
the returned output. Its signature should be ``func(output, kwargs)``,
where `output` is the output from the [possibly streaming] call to BEDTools
and `kwargs` are passed verbatim from the wrapped method call. Some
examples of methods that use this are jaccard, reldist, fisher, and split
methods.
*arg_order*, if not None, is a sorted list of arguments. This is used by
handle_kwargs() to deal with things like issues 81 and 345, where some
BEDTools programs are sensitive to argument order.
"""
# NOTE: We are calling each BEDTools program to get its help and adding
# that to the docstring of each method. This is run at import time. However
# if BEDTools is not on the path at import time, `not_implemented` is set
# to True and isn't reset later until the module is reloaded.
#
# helpers.set_bedtools_path therefore will trigger a module reload.
not_implemented = False
# Call the program with -h to get help, which prints to stderr.
try:
p = subprocess.Popen(
helpers._version_2_15_plus_names(prog) + ["-h"],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
help_str = p.communicate()[1].decode()
# underscores throw off ReStructuredText syntax of docstrings, so
# replace 'em
help_str = help_str.replace("_", "**")
# indent
help_str = help_str.split("\n")
help_str = ["\n\n**Original BEDTools help:**::"] + ["\t" + i for i in help_str]
help_str = "\n".join(help_str) + "\n"
# If the program can't be found, then we'll eventually replace the method
# with a version that does nothing but raise a NotImplementedError (plus
# a helpful message).
except OSError:
help_str = (
'"%s" does not appear to be installed '
"or on the path, so this method is "
"disabled. Please install a more recent "
"version of BEDTools and re-import to "
"use this method." % prog
)
not_implemented = True
def decorator(func):
"""
Accepts a function to be wrapped; discards the original and returns a
new, rebuilt-from-scratch function based on the kwargs passed to
_wraps().
"""
# Register the implicit (as well as bam and other) args in the global
# registry. BedTool.handle_kwargs() will access these at runtime. The
# registry is keyed by program name (like intersectBed).
_implicit_registry[prog] = implicit
if other is not None:
_other_registry[prog] = other
if bam is not None:
_bam_registry[prog] = bam
# Here's where we replace an unable-to-be-found program's method with
# one that only returns a NotImplementedError
if not_implemented:
def not_implemented_func(*args, **kwargs):
raise NotImplementedError(help_str)
return not_implemented_func
_add_doc = []
if implicit:
_add_doc.append(
dedent(
"""
For convenience, the file or stream this BedTool points to
is implicitly passed as the `-%s` argument to `%s`
"""
% (implicit, prog)
)
)
if uses_genome:
_add_doc.append(
dedent(
"""
There are two alternatives for supplying a genome. Use
`g="genome.filename"` if you have a genome's chrom sizes
saved as a file. This is the what BEDTools expects when
using it from the command line. Alternatively, use the
`genome="assembly.name"` (for example, `genome="hg19"`) to
use chrom sizes for that assembly without having to manage
a separate file. The `genome` argument triggers a call
`pybedtools.chromsizes`, so see that method for more
details.
"""
)
)
def wrapped(self, *args, **kwargs):
"""
A newly created function that will be returned by the _wraps()
decorator
"""
# Only one non-keyword argument is supported; this is then assumed
# to be "other" (e.g., `-b` for intersectBed)
if len(args) > 0:
assert len(args) == 1
kwargs[other] = args[0]
# Add the implicit values to kwargs. If the current BedTool is
# BAM, it will automatically be passed to the appropriate
# BAM-support arg (like `-abam`). But this also allows the user to
# explicitly specify the abam kwarg, which will override the
# auto-substitution.
# Note: here, `implicit` is something like "a"; `bam` is something
# like "abam"
if (
(implicit not in kwargs)
and (bam not in kwargs)
and (implicit is not None)
):
if not self._isbam:
kwargs[implicit] = self.fn
else:
# It is a bam file. If this program supports BAM as the
# first input, then we set it here
if bam is not None:
kwargs[bam] = self.fn
# Otherwise, BEDTools can't currently handle it, so raise
# an exception.
else:
raise pybedtoolsError(
'"%s" currently can\'t handle BAM '
"input, please use bam_to_bed() first." % prog
)
# Should this function handle genome files?
check_for_genome = uses_genome
if uses_genome:
if genome_none_if:
for i in genome_none_if:
if i in kwargs or i == implicit:
check_for_genome = False
# for genomecov, if -ibam then -g is optional. So it's OK
# for the user to provide genome or g kwargs, even if
# -ibam.
if genome_ok_if:
for i in genome_ok_if:
if i in kwargs or i == implicit:
if ("g" in kwargs) or ("genome" in kwargs):
check_for_genome = True
if genome_if:
check_for_genome = False
for i in genome_if:
if (i in kwargs) or (i == implicit):
check_for_genome = True
if check_for_genome:
kwargs = self.check_genome(**kwargs)
# TODO: should this be implemented as a generic function that can
# be passed in for a each tool to check kwargs? Currently this is
# the only check I can think of.
if prog in ("intersect", "intersectBed"):
if (
isinstance(kwargs["b"], list)
and len(kwargs["b"]) > 510
and all([isinstance(i, str) for i in kwargs["b"]])
):
raise pybedtoolsError(
"BEDTools intersect does not support > 510 filenames for -b "
"argument. Consider passing these as BedTool objects instead"
)
# For sequence methods, we may need to make a tempfile that will
# hold the resulting sequence. For example, fastaFromBed needs to
# make a tempfile for 'fo' if no 'fo' was explicitly specified by
# the user.
if make_tempfile_for is not None:
if make_tempfile_for not in kwargs:
kwargs[make_tempfile_for] = self._tmp()
# At runtime, this will parse the kwargs, convert streams to
# tempfiles if needed, and return all the goodies
cmds, tmp, stdin = self.handle_kwargs(prog=prog,
arg_order=arg_order,
**kwargs)
# Decide whether the output is BAM format or not.
result_is_bam = False
# By default, if the current BedTool is BAM, then the result should
# be, too.
if self._isbam:
result_is_bam = True
# If nonbam is "ALL", then this method will never return BAM
# output.
if nonbam == "ALL":
result_is_bam = False
# If any of the `nonbam` args are found in kwargs, then result is
# not a BAM. Side note: the _nonbam name mangling is necessary to
# keep the nonbam arg passed into the original _wraps() decorator
# in scope.
if nonbam is not None and nonbam != "ALL":
if isinstance(nonbam, six.string_types):
_nonbam = [nonbam]
else:
_nonbam = nonbam
for i in _nonbam:
if i in kwargs:
result_is_bam = False
break
if force_bam:
result_is_bam = True
decode_output = not result_is_bam
# Do the actual call
stream = call_bedtools(
cmds,
tmp,
stdin=stdin,
check_stderr=check_stderr,
decode_output=decode_output,
)
if does_not_return_bedtool:
return does_not_return_bedtool(stream, **kwargs)
# Post-hoc editing of the BedTool -- for example, this is used for
# the sequence methods to add a `seqfn` attribute to the resulting
# BedTool.
if add_to_bedtool is not None:
for kw, attr in list(add_to_bedtool.items()):
if kw == "stdout":
value = stream
else:
value = kwargs[kw]
setattr(self, attr, value)
result = self
else:
result = BedTool(stream)
result._isbam = result_is_bam
result._cmds = cmds
del kwargs
return result
# Now add the edited docstring (original Python doctring plus BEDTools
# help) to the newly created method above
if func.__doc__ is None:
orig = ""
else:
orig = func.__doc__
wrapped.__doc__ = orig + "\n".join(_add_doc) + help_str
# Add the original method's name to a new attribute so we can access it
# when logging history
wrapped._name = func.__name__
return wrapped
return decorator
class BedTool(object):
TEMPFILES = filenames.TEMPFILES
def __init__(self, fn=None, from_string=False, remote=False):
"""
Wrapper around Aaron Quinlan's ``BEDtools`` suite of programs
(https://github.com/arq5x/bedtools); also contains many useful
methods for more detailed work with BED files.
*fn* is typically the name of a BED-like file, but can also be
one of the following:
* a string filename
* another BedTool object
* an iterable of Interval objects
* an open file object
* a "file contents" string (see below)
If *from_string* is True, then you can pass a string that contains
the contents of the BedTool you want to create. This will treat all
spaces as TABs and write to tempfile, treating whatever you pass as
*fn* as the contents of the bed file. This also strips empty lines.
Typical usage is to point to an existing file::
a = BedTool('a.bed')
But you can also create one from scratch from a string::
>>> s = '''
... chrX 1 100
... chrX 25 800
... '''
>>> a = BedTool(s, from_string=True)
Or use examples that come with pybedtools::
>>> example_files = pybedtools.list_example_files()
>>> assert 'a.bed' in example_files
>>> a = pybedtools.example_bedtool('a.bed')
"""
if remote:
raise ValueError(
"Remote BAM no longer supported (since BEDTools does not " "support it)"
)
self.remote = remote
self._isbam = False
self._bam_header = ""
if from_string:
bed_contents = fn
fn = self._tmp()
fout = open(fn, "w")
for line in bed_contents.splitlines():
if len(line.strip()) == 0:
continue
line = "\t".join(line.split()) + "\n"
fout.write(line)
fout.close()
else:
# if fn is a Path object, we have to use its string representation
if "pathlib.PurePath" in str(type(fn).__mro__):
fn = str(fn)
# our work is already done
if isinstance(fn, BedTool):
fn = fn.fn
# from_string=False, so assume it's a filename
elif isinstance(fn, six.string_types):
if remote:
self._isbam = True
else:
if not os.path.exists(fn):
msg = 'File "%s" does not exist' % fn
if six.PY2:
raise ValueError(msg)
raise FileNotFoundError(msg)
self._isbam = isBAM(fn)
# TODO: we dont' really need this, but it's added here for
# compatibility with existing tests
if self._isbam:
header = pysam.Samfile(fn).header
# For example:
# {
# 'HD': {'VN': '1.0', 'SO': 'coordinate'},
# 'SQ': [
# {'LN': 23011544,
# 'SN': 'chr2L'},
# {'LN': 21146708,
# 'SN': 'chr2R'},
# {'LN': 24543557,
# 'SN': 'chr3L'},
# {'LN': 27905053,
# 'SN': 'chr3R'},
# {'LN': 1351857,
# 'SN': 'chr4'},
# {'LN': 22422827,
# 'SN': 'chrX'}
# ]
# }
txt_header = []
for k, v in header.items():
if isinstance(v, list):
for i in v:
if isinstance(i, dict):
txt_header.append(
"\t".join(
["@" + k]
+ [
":".join(map(str, j))
for j in sorted(i.items(), reverse=True)
]
)
)
elif isinstance(i, str):
txt_header.append(i)
elif isinstance(v, dict):
txt_header.append(
"\t".join(
["@" + k]
+ [
":".join(map(str, j))
for j in sorted(v.items(), reverse=True)
]
)
)
else:
raise ValueError("unhandled type in BAM header")
self._bam_header = "\n".join(txt_header) + "\n"
# If tuple or list, then save as file first
# (fixes #73)
elif isinstance(fn, (list, tuple)):
fn = BedTool(iter(fn)).saveas().fn
# Otherwise assume iterator, say an open file as from
# subprocess.PIPE
else:
fn = fn
self.fn = fn
tag = "".join([random.choice(string.ascii_lowercase) for _ in range(8)])
self._tag = tag
_tags[tag] = self
self._hascounts = False
self._file_type = None
self.history = History()
@classmethod
def from_dataframe(
self,
df,
outfile=None,
sep="\t",
header=False,
na_rep=".",
index=False,
**kwargs
):
"""
Creates a BedTool from a pandas.DataFrame.
If `outfile` is None, a temporary file will be used. Otherwise it can
be a specific filename or an open file handle. Additional kwargs will
be passed to `pandas.DataFrame.to_csv`.
The fields of the resulting BedTool will match the order of columns in
the dataframe.
"""
try:
import pandas
except ImportError:
raise ImportError("pandas must be installed to use dataframes")
if outfile is None:
outfile = self._tmp()
default_kwargs = dict(sep=sep, header=header, na_rep=na_rep, index=index)
default_kwargs.update(kwargs)
df.to_csv(outfile, **default_kwargs)
if isinstance(outfile, six.string_types):
fn = outfile
else:
try:
fn = outfile.name
except AttributeError:
raise ValueError(
"`outfile` is not a string and doesn't have a `name` attribute. "
"Unable to determine filename."
)
return BedTool(fn)
def split(self, func, *args, **kwargs):
"""
Split each feature using a user-defined function.
Calls the provided function `func` with each interval. In contrast to
`each` (which does something similar), this method expects `func` to
return an *iterable* of Interval objects.
args and kwargs are passed directly to `func`.
Returns a new BedTool.
"""
def generator():
for orig_interval in self:
for interval in func(orig_interval, *args, **kwargs):
yield interval
return BedTool(generator())
def truncate_to_chrom(self, genome):
"""
Ensure all features fall within chromosome limits.
Some peak-callers extend peaks such that the boundaries overstep
chromosome coordinates. Upon uploading such a file to a genome browser
like UCSC, this results in an error like::
Error line 101 of custom track: chromEnd larger than chrom chr2
size
Use this method to clean your file, truncating any out-of-bounds
features to fit within the chromosome coordinates of `genome`.
`genome` can be either an assembly name ('dm3') or a dictionary where
keys are chrom and values are (start, stop) tuples.
"""
if isinstance(genome, dict):
chromdict = genome
else:
assert isinstance(genome, six.string_types)
chromdict = helpers.chromsizes(genome)
tmp = self._tmp()
with open(tmp, "w") as fout:
for chrom, coords in list(chromdict.items()):
start, stop = coords
start = str(start)
stop = str(stop)
fout.write("\t".join([chrom, start, stop]) + "\n")
return self.intersect(tmp)
def tabix_intervals(self, interval_or_string, check_coordinates=False):
"""
Retrieve all intervals within coordinates from a "tabixed" BedTool.
Given either a string in "chrom:start-stop" format, or an interval-like
object with chrom, start, stop attributes, return a *streaming* BedTool
of the features in this BedTool that overlap the provided interval.
If the coordinates are invalid, an empty generator is returned unless
`check_coordinates=True` in which case a ValueError will be raised.
"""
if not self._tabixed():
raise ValueError(
"This BedTool has not been indexed for tabix "
"-- please use the .tabix() method"
)
# tabix expects 1-based coords, but BEDTools works with
# zero-based. pybedtools and pysam also work with zero-based. So we can
# pass zero-based directly to the pysam tabix interface.
tbx = pysam.TabixFile(self.fn)
# If an interval is passed, use its coordinates directly
if isinstance(interval_or_string, Interval):
interval = interval_or_string
chrom, start, end = interval.chrom, interval.start, interval.stop
# Parse string directly instead of relying on Interval, in order to
# permit full chromosome fetching
else:
match = helpers.coord_re.search(interval_or_string)
# Assume string is contig if it doesn't fit chrom:start-end format
if match is None:
chrom = interval_or_string
start, end = None, None
# Otherwise parse the coordinates
else:
chrom, start, end = match.group(1, 2, 3)
start, end = int(start), int(end)
# Fetch results.
try:
results = tbx.fetch(str(chrom), start, end)
except ValueError:
if check_coordinates:
raise
else:
results = []
# pysam.ctabix.TabixIterator does not include newlines when yielding so
# we need to add them.
def gen():
for i in results:
yield i + "\n"
# xref #190
x = BedTool(gen()).saveas()
tbx.close()
return x
def tabix_contigs(self):
"""
Returns a list of contigs from the tabix index.
"""
if not self._tabixed():
raise ValueError(
"This BedTool has not been indexed for tabix "
"-- please use the .tabix() method"
)
tbx = pysam.TabixFile(self.fn)
return tbx.contigs
def tabix(self, in_place=True, force=False, is_sorted=False):
"""
Prepare a BedTool for use with Tabix.
Returns a new BedTool that has been BGZIP compressed
and indexed by tabix.
Parameters
----------
in_place : bool
If True (default), then assume the file is already sorted and
replace the existing file with the BGZIPed version.
force : bool
If True (default is False), then overwrite both the index and the
BGZIP file.
is_sorted : bool
If True (default is False), then assume the file is already sorted
so that BedTool.bgzip() doesn't have to do that work.
"""
# Return quickly if nothing to do
if self._tabixed() and not force:
return self
# Make sure it's BGZIPed
fn = self.bgzip(in_place=in_place, force=force)
pysam.tabix_index(fn, force=force, preset=self.file_type)
return BedTool(fn)
def _tabixed(self):
"""
Verifies that we're working with a tabixed file: a string filename
pointing to a BGZIPed file with a .tbi file in the same dir.
"""
if (
isinstance(self.fn, six.string_types)
and isBGZIP(self.fn)
and os.path.exists(self.fn + ".tbi")
):
return True
def bgzip(self, in_place=True, force=False, is_sorted=False):
"""
Helper function for more control over "tabixed" BedTools.
Checks to see if we already have a BGZIP file; if not then prepare one.
Always leaves the original file alone. You can always just make a
BedTool out of an already sorted and BGZIPed file to avoid this step.
`in_place` will put the BGZIPed file in the same dir (possibly after
sorting to tempfile).
If `is_sorted`, then assume the file is already sorted. Otherwise call
bedtools sort with the `-header` option.
`force` will overwrite without asking.
"""
if force:
force_arg = "-f"
else:
force_arg = ""
# It may already be BGZIPed...
if isinstance(self.fn, six.string_types) and not force:
if isBGZIP(self.fn):
return self.fn
# If not in_place, then make a tempfile for the BGZIPed version
if not in_place:
# Get tempfile name, sorted or not
if not is_sorted:
fn = self.sort(header=True).fn
else:
fn = self._tmp()
# Register for later deletion
outfn = fn + ".gz"
BedTool.TEMPFILES.append(outfn)
# Creates tempfile.gz
pysam.tabix_compress(fn, outfn, force=force)
return outfn
# Otherwise, make sure the BGZIPed version has a similar name to the
# current BedTool's file
if in_place:
if not is_sorted:
fn = self.sort(header=True).saveas().fn
else:
fn = self.fn
outfn = self.fn + ".gz"
pysam.tabix_compress(fn, outfn, force=force)
return outfn
def delete_temporary_history(self, ask=True, raw_input_func=None):
"""
Use at your own risk! This method will delete temp files. You will be
prompted for deletion of files unless you specify *ask=False*.
Deletes all temporary files created during the history of this BedTool
up to but not including the file this current BedTool points to.
Any filenames that are in the history and have the following pattern
will be deleted::
/pybedtools.*.tmp
(where is the result from get_tempdir() and is by default
"/tmp")
Any files that don't have this format will be left alone.
(*raw_input_func* is used for testing)
"""
flattened_history = _flatten_list(self.history)
to_delete = []
tempdir = get_tempdir()
for i in flattened_history:
fn = i.fn
if fn.startswith(os.path.join(os.path.abspath(tempdir), "pybedtools")):
if fn.endswith(".tmp"):
to_delete.append(fn)
if raw_input_func is None:
raw_input_func = input
str_fns = "\n\t".join(to_delete)
if ask:
answer = raw_input_func("Delete these files?\n\t%s\n(y/N) " % str_fns)
if not answer.lower()[0] == "y":
print("OK, not deleting.")
return
for fn in to_delete:
os.unlink(fn)
return
def _log_to_history(method):
"""
Decorator to add a method and its kwargs to the history.
Assumes that you only add this decorator to bedtool instances that
return other bedtool instances
"""
def decorated(self, *args, **kwargs):
# this calls the actual method in the first place; *result* is
# whatever you get back
result = method(self, *args, **kwargs)
# add appropriate tags
parent_tag = self._tag
result_tag = result._tag
# log the sucka
history_step = HistoryStep(
method, args, kwargs, self, parent_tag, result_tag
)
# only add the current history to the new bedtool if there's
# something to add
if len(self.history) > 0:
result.history.append(self.history)
# but either way, add this history step to the result.
result.history.append(history_step)
return result
decorated.__doc__ = method.__doc__
return decorated
def filter(self, func, *args, **kwargs):
"""
Filter features by user-defined function.
Takes a function *func* that is called for each feature in the
`BedTool` object and returns only those for which the function returns
True.
*args and **kwargs are passed directly to *func*.
Returns a streaming BedTool; if you want the filename then use the
.saveas() method.
>>> a = pybedtools.example_bedtool('a.bed')
>>> subset = a.filter(lambda b: b.chrom == 'chr1' and b.start < 150)
>>> len(a), len(subset)
(4, 2)
so it has extracted 2 records from the original 4.
"""
return BedTool((f for f in self if func(f, *args, **kwargs)))
def field_count(self, n=10):
"""
Number of fields in each line of this BedTool (checks `n` lines)
Return the number of fields in the features this file contains. Checks
the first *n* features.
>>> a = pybedtools.example_bedtool('a.bed')
>>> a.field_count()
6
"""
if self.file_type == "empty":
return 0
i = 0
fields = set([])
for feat in self:
if i > n:
break
i += 1
# TODO: make this more efficient.
fields.update([len(feat.fields)])
assert len(fields) == 1, fields
return list(fields)[0]
def each(self, func, *args, **kwargs):
"""
Modify each feature with a user-defined function.
Applies user-defined function *func* to each feature. *func* must
accept an Interval as its first argument; *args and **kwargs will be
passed to *func*.
*func* must return an Interval object OR a value that evaluates to
False, in which case the original feature will be removed from the
output. This way, an additional "filter" call is not necessary.
>>> def truncate_feature(feature, limit=0):
... feature.score = str(len(feature))
... if len(feature) > limit:
... feature.stop = feature.start + limit
... feature.name = feature.name + '.short'
... return feature
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = a.each(truncate_feature, limit=100)
>>> print(b) #doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 99 +
chr1 100 200 feature2 100 +
chr1 150 250 feature3.short 350 -
chr1 900 950 feature4 50 +
"""
def _generator():
for f in self:
result = func(f, *args, **kwargs)
if result:
yield result
return BedTool(_generator())
def introns(self, gene="gene", exon="exon"):
"""
Create intron features (requires specific input format).
NOTE: this method assumes a simple file with non-overlapping exons. For
more sophisticated features, consider the gffutils package instead.
Given a BED12 or a GFF with exons, create a new `BedTool` with just
introns. The output is a bed6 file with the score column (5) being one
of 'intron'/'utr5'/'utr3'
"""
# iterate over all the features in the gene.
s = self.sort()
if self.file_type == "gff":
exon_iter = BedTool((f for f in s if f[2] == exon)).saveas()
gene_iter = BedTool((f for f in s if f[2] == gene)).saveas()
elif self.file_type == "bed":
if s.field_count() == 12:
exon_iter = s.bed6().saveas()
gene_iter = s.saveas()
else:
# TODO: bed6. groupby on name and find smallest start,
# largest stop.
exon_iter = s
gene_iter = None
raise NotImplementedError(
".introns() only supported for bed12" "and GFF"
)
else:
raise NotImplementedError(".introns() only supported for BED and GFF")
with open(BedTool._tmp(), "w") as fh:
# group on the name.
exon_intervals = IntervalFile(exon_iter.fn)
for g in gene_iter:
# search finds all, but we just want the ones that completely
# overlap this gene.
exons = [
e
for e in exon_intervals.search(g, same_strand=True)
if e.start >= g.start and e.end <= g.end
]
for i, exon in enumerate(exons):
# 5' utr between gene start and first intron
if i == 0 and exon.start > g.start:
utr = {"+": "utr5", "-": "utr3"}[g.strand]
print(
"%s\t%i\t%i\t%s\t%s\t%s"
% (g.chrom, g.start, exon.start, g.name, utr, g.strand),
file=fh,
)
elif i == len(exons) - 1 and exon.end < g.end:
utr = {"+": "utr3", "-": "utr5"}[g.strand]
print(
"%s\t%i\t%i\t%s\t%s\t%s"
% (g.chrom, exon.end, g.end, g.name, utr, g.strand),
file=fh,
)
elif i != len(exons) - 1:
istart = exon.end
iend = exons[i + 1].start
print(
"%s\t%i\t%i\t%s\tintron\t%s"
% (g.chrom, istart, iend, g.name, g.strand),
file=fh,
)
return BedTool(fh.name)
def features(self):
"""
Returns an iterable of features
"""
if hasattr(self, "next") or hasattr(self, "__next__"):
return self
return iter(self)
@property
def file_type(self):
"""
Return the type of the current file. One of ('bed','vcf','gff', 'bam',
'sam', 'empty').
>>> a = pybedtools.example_bedtool('a.bed')
>>> print(a.file_type)
bed
"""
if not isinstance(self.fn, six.string_types):
raise ValueError(
"Checking file_type not supported for "
"non-file BedTools. Use .saveas() to "
"save as a temp file first."
)
if self._isbam:
self._file_type = "bam"
else:
try:
self._file_type = six.advance_iterator(iter(self)).file_type
except StopIteration:
self._file_type = "empty"
return self._file_type
def cut(self, indexes, stream=False):
"""
Analagous to unix `cut`.
Similar to unix `cut` except indexes are 0-based, must be a list
and the columns are returned in the order requested.
This method returns a BedTool of results, which means that the indexes
returned must be valid GFF/GTF/BED/SAM features.
If you would like arbitrary columns -- say, just chrom and featuretype
of a GFF, which would not comprise a valid feature -- then instead of
this method, simply use indexes on each feature, e.g,
>>> gff = pybedtools.example_bedtool('d.gff')
>>> results = [(f[0], f[2]) for f in gff]
In addition, `indexes` can contain keys of the GFF/GTF attributes, in
which case the values are returned. e.g. 'gene_name' will return the
corresponding name from a GTF, or 'start' will return the start
attribute of a BED Interval.
"""
if stream:
return BedTool(([f[attr] for attr in indexes] for f in self))
else:
with open(self._tmp(), "w") as fh:
for f in self:
print("\t".join(map(str, [f[attr] for attr in indexes])), file=fh)
return BedTool(fh.name)
@classmethod
def _tmp(self):
"""
Makes a tempfile and registers it in the BedTool.TEMPFILES class
variable. Adds a "pybedtools." prefix and ".tmp" extension for easy
deletion if you forget to call pybedtools.cleanup().
"""
tmpfn = tempfile.NamedTemporaryFile(
prefix=settings.tempfile_prefix,
suffix=settings.tempfile_suffix,
delete=False,
)
tmpfn = tmpfn.name
BedTool.TEMPFILES.append(tmpfn)
return tmpfn
def __iter__(self):
"""
Dispatches the right iterator depending on how this BedTool was
created
"""
if self._isbam:
# Note: BAM class takes filename or stream, so self.fn is OK
# here
return BAM(self.fn)
# Plain ol' filename
if isinstance(self.fn, six.string_types):
if not os.path.exists(self.fn):
raise BedToolsFileError("{0} does not exist".format(self.fn))
if isGZIP(self.fn):
return IntervalIterator(gzip.open(self.fn, "rt"))
else:
return IntervalIterator(open(self.fn, "r"))
# Any other kind of input (streaming string from stdout; iterable of
# Intervals, iterable of (chrom, start, stop) tuples, etc are handled
# appropriately by IntervalIterator.
else:
return IntervalIterator(self.fn)
@property
def intervals(self):
if isinstance(self.fn, six.string_types):
return IntervalFile(self.fn)
else:
raise ValueError("Please convert to a file-based BedTool using saveas")
def __repr__(self):
if isinstance(self.fn, six.string_types):
if os.path.exists(self.fn) or self.remote:
return "" % self.fn
else:
return "" % self.fn
elif isinstance(self.fn, BedTool):
return repr(self.fn)
else:
return "" % repr(self.fn)
def __str__(self):
"""
Returns the string representation of the whole `BedTool`
"""
items = []
for i in iter(self):
i = str(i)
if isinstance(i, bytes):
i = i.decode("UTF-8")
items.append(i)
return "".join(items)
def __len__(self):
return self.count()
def __eq__(self, other):
if isinstance(other, six.string_types):
other_str = other
elif isinstance(other, BedTool):
if not isinstance(self.fn, six.string_types) or not isinstance(
other.fn, six.string_types
):
raise NotImplementedError(
"Testing equality only supported for"
" BedTools that point to files"
)
if str(self) == str(other):
return True
return False
def __ne__(self, other):
return not self.__eq__(other)
def __getitem__(self, key):
if isinstance(key, slice):
return islice(self, key.start, key.stop, key.step)
elif isinstance(key, int):
return list(islice(self, key, key + 1))[0]
else:
raise ValueError(
"Only slices or integers allowed for indexing " "into a BedTool"
)
def __add__(self, other):
try:
result = self.intersect(other, u=True)
except BEDToolsError as e:
# BEDTools versions <2.20 would raise BEDToolsError
if (self.file_type == "empty") or (other.file_type == "empty"):
result = pybedtools.BedTool("", from_string=True)
else:
raise e
return result
def __sub__(self, other):
try:
result = self.intersect(other, v=True)
except BEDToolsError:
# BEDTools versions <2.20 would raise BEDToolsError
if (self.file_type == "empty") and (other.file_type == "empty"):
result = pybedtools.BedTool("", from_string=True)
elif other.file_type == "empty":
result = self.saveas()
elif self.file_type == "empty":
result = pybedtools.BedTool("", from_string=True)
return result
def head(self, n=10, as_string=False):
"""
Prints the first *n* lines or returns them if as_string is True
Note that this only opens the underlying file (gzipped or not), so it
does not check to see if the file is a valid BED file.
>>> a = pybedtools.example_bedtool('a.bed')
>>> a.head(2) #doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 0 +
chr1 100 200 feature2 0 +
"""
if not isinstance(self.fn, six.string_types):
raise NotImplementedError(
"head() not supported for non file-based BedTools"
)
if as_string:
return "".join(str(line) for line in self[:n])
if self._isbam:
raise NotImplementedError("head() not supported for BAM")
else:
if isGZIP(self.fn):
openfunc = gzip.open
openmode = "rt"
else:
openfunc = open
openmode = "r"
with openfunc(self.fn, openmode) as fin:
for i, line in enumerate(fin):
if i == (n):
break
print(line, end=" ")
def set_chromsizes(self, chromsizes):
"""
Prepare BedTool for operations that require chromosome coords.
Set the chromsizes for this genome. If *chromsizes* is a string, it
will be considered a genome assembly name. If that assembly name is
not available in pybedtools.genome_registry, then it will be searched
for on the UCSC Genome Browser.
Example usage:
>>> hg19 = pybedtools.chromsizes('hg19')
>>> a = pybedtools.example_bedtool('a.bed')
>>> a = a.set_chromsizes(hg19)
>>> print(a.chromsizes['chr1'])
(0, 249250621)
"""
if isinstance(chromsizes, six.string_types):
self.chromsizes = pybedtools.chromsizes(chromsizes)
elif isinstance(chromsizes, dict):
self.chromsizes = chromsizes
else:
raise ValueError(
"Need to specify chromsizes either as a string"
" (assembly name) or a dictionary"
)
return self
def _collapse(
self,
iterable,
fn=None,
trackline=None,
in_compressed=False,
out_compressed=False,
):
"""
Collapses an iterable into file *fn* (or a new tempfile if *fn* is
None).
Returns the newly created filename.
Parameters
----------
iterable : iter
Any iterable object whose items can be converted to an Interval.
fn : str
Output filename, if None then creates a temp file for output
trackline : str
If not None, string to be added to the top of the output. Newline
will be added.
in_compressed : bool
Indicates whether the input is compressed
out_compressed : bool
Indicates whether the output should be compressed
"""
if fn is None:
fn = self._tmp()
in_open_func = gzip.open if in_compressed else open
out_open_func = gzip.open if out_compressed else open
# special case: if BAM-format BedTool is provided, no trackline should
# be supplied, and don't iterate -- copy the file wholesale
if isinstance(iterable, BedTool) and iterable._isbam:
if trackline:
raise ValueError(
"trackline provided, but input is a BAM "
"file, which takes no track line"
)
with open(fn, "wb") as out_:
out_.write(open(self.fn, "rb").read())
return fn
# If we're just working with filename-based BedTool objects, just copy
# the files directly
if isinstance(iterable, BedTool) and isinstance(iterable.fn, six.string_types):
with out_open_func(fn, "wt") as out_:
if sys.version_info > (3,0):
in_ = in_open_func(iterable.fn, "rt", errors="ignore")
else:
in_ = in_open_func(iterable.fn, "rt")
if trackline:
out_.write(trackline.strip() + "\n")
out_.writelines(in_)
in_.close()
else:
with out_open_func(fn, "wt") as out_:
for i in iterable:
if isinstance(i, (list, tuple)):
i = create_interval_from_list(list(i))
out_.write(str(i))
return fn
def handle_kwargs(self, prog, arg_order, **kwargs):
"""
Handle most cases of BEDTool program calls, but leave the specifics
up to individual methods.
*prog* is a BEDTools program name, e.g., 'intersectBed'.
*arg_order* lists any arguments that are sensitive to order. Everything
else will be reverse-sorted.
*kwargs* are passed directly from the calling method (like
self.intersect).
This method figures out, given how this BedTool was constructed, what
to send to BEDTools programs -- for example, an open file to stdin with
the `-` argument, or a filename with the `-a` argument.
"""
pybedtools.logger.debug(
"BedTool.handle_kwargs() got these kwargs:\n%s", pprint.pformat(kwargs)
)
# If you pass in a list, how should it be converted to a BedTools arg?
default_list_delimiter = " "
list_delimiters = {
"annotateBed": " ",
"getOverlap": ",",
"groupBy": ",",
"multiIntersectBed": " ",
"mergeBed": ",",
"intersectBed": " ",
"mapBed": ",",
}
stdin = None
# -----------------------------------------------------------------
# Decide how to send instream1 to BEDTools. If there's no implicit
# instream1 arg, then do nothing.
#
try:
# e.g., 'a' for intersectBed
if self._isbam:
inarg1 = _bam_registry[prog]
else:
inarg1 = _implicit_registry[prog]
# e.g., self.fn or 'a.bed' or an iterator...
instream1 = kwargs[inarg1]
# If it's a BedTool, then get underlying stream
if isinstance(instream1, BedTool):
instream1 = instream1.fn
# Filename? No pipe, just provide the file
if isinstance(instream1, six.string_types):
kwargs[inarg1] = instream1
stdin = None
# Open file? Pipe it
# elif isinstance(instream1, file):
# kwargs[inarg1] = 'stdin'
# stdin = instream1
# A generator or iterator: pipe it as a generator of lines
else:
kwargs[inarg1] = "stdin"
stdin = (str(i) for i in instream1)
except KeyError:
pass
# -----------------------------------------------------------------
# Decide how to send instream2 to BEDTools.
try:
# e.g., 'b' for intersectBed
inarg2 = _other_registry[prog]
# e.g., another BedTool
instream2 = kwargs[inarg2]
# Get stream if BedTool
if isinstance(instream2, BedTool):
instream2 = instream2.fn
# Filename
if isinstance(instream2, six.string_types):
kwargs[inarg2] = instream2
# If it's a list of strings, then we need to figure out if it's
# a list of filenames or a list of intervals (see issue #156)
#
# Several options:
#
# - assume intervals have tabs but filenames don't
# - assume that, upon being split on tabs, an interval is >=3 fields
# - try creating an interval out of the first thing, success means interval
#
# The last seems the most robust. It does allow filenames with
# tabs; deciding whether or not such filenames are a good idea is
# left to the user.
#
elif isinstance(instream2, (list, tuple)) and isinstance(
instream2[0], six.string_types
):
try:
_ = create_interval_from_list(instream2[0].split("\t"))
kwargs[inarg2] = self._collapse(instream2)
except IndexError:
kwargs[inarg2] = instream2
# Otherwise we need to collapse it in order to send to BEDTools
# programs
else:
kwargs[inarg2] = self._collapse(instream2)
except KeyError:
pass
# If stream not specified, then a tempfile will be created
if kwargs.pop("stream", None):
tmp = None
else:
output = kwargs.pop("output", None)
if output:
tmp = output
else:
tmp = self._tmp()
additional_args = kwargs.pop("additional_args", None)
# Parse the kwargs into BEDTools-ready args
cmds = [prog]
# arg_order mechanism added to fix #345
if arg_order is None:
arg_order = []
for arg in arg_order:
if arg in kwargs:
val = kwargs.pop(arg)
cmds.append("-" + arg)
cmds.append(val)
# The reverse-sort is a temp fix for issue #81
for key, value in sorted(list(kwargs.items()), reverse=True):
if isinstance(value, bool):
if value:
cmds.append("-" + key)
else:
continue
elif isinstance(value, list) or isinstance(value, tuple):
value = list(map(str, value))
try:
delim = list_delimiters[prog]
except KeyError:
delim = default_list_delimiter
if delim == " ":
cmds.append("-" + key)
cmds.extend(value)
# make comma-separated list if that's what's needed
else:
cmds.append("-" + key)
cmds.append(delim.join(value))
else:
cmds.append("-" + key)
cmds.append(str(value))
if additional_args:
cmds.append(additional_args)
return cmds, tmp, stdin
def check_genome(self, **kwargs):
"""
Handles the different ways of specifying a genome in kwargs:
g='genome.file' specifies a file directly
genome='dm3' gets the file from genome registry
self.chromsizes could be a dict.\
"""
# If both g and genome are missing, assume self.chromsizes
if ("g" not in kwargs) and ("genome" not in kwargs):
if hasattr(self, "chromsizes"):
kwargs["g"] = self.chromsizes
else:
raise ValueError(
'No genome specified. Use the "g" or '
'"genome" kwargs, or use the '
".set_chromsizes() method"
)
# If both specified, rather than make an implicit decision, raise an
# exception
if "g" in kwargs and "genome" in kwargs:
raise ValueError('Cannot specify both "g" and "genome"')
# Something like genome='dm3' was specified
if "g" not in kwargs and "genome" in kwargs:
if isinstance(kwargs["genome"], dict):
genome_dict = kwargs["genome"]
else:
genome_dict = pybedtools.chromsizes(kwargs["genome"])
genome_file = pybedtools.chromsizes_to_file(genome_dict)
kwargs["g"] = genome_file
del kwargs["genome"]
# By the time we get here, 'g' is specified.
# If a dict was provided, convert to tempfile here
if isinstance(kwargs["g"], dict):
kwargs["g"] = pybedtools.chromsizes_to_file(kwargs["g"])
if not os.path.exists(kwargs["g"]):
msg = 'Genome file "%s" does not exist' % (kwargs["g"])
if six.PY2:
raise ValueError(msg)
raise FileNotFoundError(msg)
return kwargs
@_log_to_history
def remove_invalid(self):
"""
Remove invalid features that may break BEDTools programs.
>>> a = pybedtools.BedTool("chr1 10 100\\nchr1 10 1",
... from_string=True)
>>> print(a.remove_invalid()) #doctest: +NORMALIZE_WHITESPACE
chr1 10 100
"""
tmp = self._tmp()
fout = open(tmp, "w")
# If it's a file-based BedTool -- which is likely, if we're trying to
# remove invalid features -- then we need to parse it line by line.
if isinstance(self.fn, six.string_types):
i = IntervalIterator(open(self.fn, "r"))
else:
tmp = self.saveas()
i = IntervalIterator(open(tmp.fn, "r"))
def _generator():
while True:
try:
feature = next(i)
if feature.start <= feature.stop:
yield feature
else:
continue
except pybedtools.MalformedBedLineError:
continue
except OverflowError:
# This can happen if coords are negative
continue
except IndexError:
continue
except StopIteration:
break
return BedTool(_generator())
def all_hits(self, interval, same_strand=False, overlap=0.0):
"""
Return all intervals that overlap `interval`.
Calls the `all_hits` method of an IntervalFile to return all intervals
in this current BedTool that overlap `interval`.
Require that overlaps have the same strand with same_strand=True.
Notes:
If this current BedTool is generator-based, it will be
converted into a file first.
If this current BedTool refers to a BAM file, it will be
converted to a BED file first using default arguments. If you
don't want this to happen, please convert to BED first before
using this method.
"""
if not isinstance(interval, Interval):
raise ValueError("Need an Interval instance")
fn = self.fn
if not isinstance(fn, six.string_types):
fn = self.saveas().fn
if self._isbam:
fn = self.bam_to_bed().fn
interval_file = pybedtools.IntervalFile(fn)
return interval_file.all_hits(interval, same_strand, overlap)
def any_hits(self, interval, same_strand=False, overlap=0.0):
"""
Return whether or not any intervals overlap `interval`.
Calls the `any_hits` method of an IntervalFile. If there were any hits
within `interval` in this BedTool, then return 1; otherwise 0.
Require that overlaps have the same strand with same_strand=True.
Notes:
If this current BedTool is generator-based, it will be
converted into a file first.
If this current BedTool refers to a BAM file, it will be
converted to a BED file first using default arguments. If you
don't want this to happen, please convert to BED first before
using this method.
"""
if not isinstance(interval, Interval):
raise ValueError("Need an Interval instance")
fn = self.fn
if not isinstance(fn, six.string_types):
fn = self.saveas().fn
if self._isbam:
fn = self.bam_to_bed().fn
interval_file = pybedtools.IntervalFile(fn)
return interval_file.any_hits(interval, same_strand, overlap)
def count_hits(self, interval, same_strand=False, overlap=0.0):
"""
Return the number of intervals that overlap `interval`.
Calls the `count_hits` method of an IntervalFile. Returns the number
of valid hits in this BedTool that overlap `interval`.
Require that overlaps have the same strand with same_strand=True.
Notes:
If this current BedTool is generator-based, it will be
converted into a file first.
If this current BedTool refers to a BAM file, it will be
converted to a BED file first using default arguments. If you
don't want this to happen, please convert to BED first before
using this method.
"""
if not isinstance(interval, Interval):
raise ValueError("Need an Interval instance")
fn = self.fn
if not isinstance(fn, six.string_types):
fn = self.saveas().fn
if self._isbam:
fn = self.bam_to_bed().fn
interval_file = pybedtools.IntervalFile(fn)
return interval_file.count_hits(interval, same_strand, overlap)
@_log_to_history
@_wraps(prog="bed12ToBed6", implicit="i", bam=None, other=None)
def bed6(self, **kwargs):
"""
Wraps `bedtools bed12tobed6`.
"""
pass
# Alias for backward compatibility
bed12tobed6 = bed6
@_log_to_history
@_wraps(prog="bamToBed", implicit="i", other=None, nonbam="ALL", bam="i")
def bam_to_bed(self, **kwargs):
"""
Wraps `bedtools bamtobed`.
"""
# Alias for backward compatibility
bamtobed = bam_to_bed
@_wraps(prog="bedToBam", implicit="i", uses_genome=True, force_bam=True)
def _bed_to_bam(self):
"""
Wraps bedToBam and is called internally for BED/GFF/VCF files by
self.to_bam (which needs to do something different for SAM files...)
"""
@_log_to_history
def to_bam(self, **kwargs):
"""
Wraps `bedtools bedtobam`
If self.fn is in BED/VCF/GFF format, call BEDTools' bedToBam. If
self.fn is in SAM format, then create a header out of the genome file
and then convert using `samtools`.
"""
if self.file_type == "bam":
return self
if self.file_type in ("bed", "gff", "vcf"):
return self._bed_to_bam(**kwargs)
# TODO: to maintain backwards compatibility we go from Interval to
# AlignedSegment.
if self.file_type == "sam":
# Use pysam, but construct the header out of a provided genome
# file.
# construct a genome out of whatever kwargs were passed in
kwargs = self.check_genome(**kwargs)
# Build a header that we can use for the output BAM file.
genome = dict(i.split() for i in open(kwargs["g"]))
SQ = []
ref_ids = {}
text_header = ["@HD\tVN:1.0"]
for i, (k, v) in enumerate(genome.items()):
SQ.append(dict(SN=k, LN=int(v)))
ref_ids[k] = i
text_header.append("@SQ\tSN:{0}\tLN:{1}".format(k, v))
# Here's the pysam-formatted header
header = {"HD": {"VN": "1.0"}, "SQ": SQ}
# And the text-format header
text_header = "\n".join(text_header) + "\n"
# The strategy is to write an actual SAM file to disk, along with
# a header, and then read that back in.
#
# Painfully inefficient, but this will change once all py2 tests
# pass.
sam_tmp = self._tmp()
bam_tmp = self._tmp()
with open(sam_tmp, "w") as fout:
fout.write(text_header)
for interval in self:
fout.write("\t".join(map(str, interval.fields)) + "\n")
samfile = pysam.AlignmentFile(sam_tmp, "r")
bamfile = pysam.AlignmentFile(bam_tmp, "wb", template=samfile)
for alignment in samfile:
bamfile.write(alignment)
samfile.close()
bamfile.close()
new_bedtool = BedTool(bam_tmp)
new_bedtool._isbam = True
return new_bedtool
# Alias for backward compatibility
bedtobam = to_bam
@_log_to_history
@_wraps(prog="intersectBed", implicit="a", other="b", bam="abam",
nonbam="bed", arg_order=["a", "abam"])
def intersect(self):
"""
Wraps `bedtools intersect`.
"""
@_log_to_history
@_wraps(
prog="fastaFromBed",
implicit="bed",
bam=None,
other="fi",
make_tempfile_for="fo",
check_stderr=_check_sequence_stderr,
add_to_bedtool={"fo": "seqfn"},
)
def sequence(self):
'''
Wraps `bedtools getfasta`.
*fi* is passed in by the user; *bed* is automatically passed in as the
bedfile of this object; *fo* by default is a temp file. Use
save_seqs() to save as a file.
The end result is that this BedTool will have an attribute, self.seqfn,
that points to the new fasta file.
Example usage:
>>> a = pybedtools.BedTool("""
... chr1 1 10
... chr1 50 55""", from_string=True)
>>> fasta = pybedtools.example_filename('test.fa')
>>> a = a.sequence(fi=fasta)
>>> print(open(a.seqfn).read())
>chr1:1-10
GATGAGTCT
>chr1:50-55
CCATC
'''
# Alias for backwards compatibility
getfasta = sequence
@staticmethod
def seq(loc, fasta):
"""
Return just the sequence from a region string or a single location
>>> fn = pybedtools.example_filename('test.fa')
>>> BedTool.seq('chr1:2-10', fn)
'GATGAGTCT'
>>> BedTool.seq(('chr1', 1, 10), fn)
'GATGAGTCT'
"""
if isinstance(loc, six.string_types):
chrom, start_end = loc.split(":")
start, end = list(map(int, start_end.split("-")))
start -= 1
else:
chrom, start, end = loc[0], loc[1], loc[2]
loc = BedTool("%s\t%i\t%i" % (chrom, start, end), from_string=True)
lseq = loc.sequence(fi=fasta)
return "".join([l.rstrip() for l in open(lseq.seqfn, "r") if l[0] != ">"])
@_log_to_history
@_wraps(
prog="nucBed", implicit="bed", other="fi", check_stderr=_check_sequence_stderr
)
def nucleotide_content(self):
"""
Wraps `bedtools nuc`.
Profiles nucleotide content. The returned BED file contains extra
information about the nucleotide content
"""
# Alias for backwards compatibility
nuc = nucleotide_content
@_log_to_history
@_wraps(prog="multiBamCov", implicit="bed")
def multi_bam_coverage(self):
"""
Wraps `bedtools multicov`.
Pass a list of sorted and indexed BAM files as `bams`
"""
# Alias for backwards compatibility
multicov = multi_bam_coverage
@_log_to_history
@_wraps(prog="subtractBed", implicit="a", other="b", bam=None)
def subtract(self):
"""
Wraps `bedtools subtract`.
Subtracts from another BED file and returns a new BedTool object.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
Do a "stranded" subtraction:
>>> c = a.subtract(b, s=True)
Require 50% of features in `a` to overlap:
>>> c = a.subtract(b, f=0.5)
"""
kwargs["b"] = b
if "a" not in kwargs:
kwargs["a"] = self.fn
cmds, tmp, stdin = self.handle_kwargs(prog="subtractBed", **kwargs)
stream = call_bedtools(cmds, tmp, stdin=stdin)
return BedTool(stream)
@_log_to_history
@_wraps(prog="slopBed", implicit="i", other=None, bam=None, uses_genome=True)
def slop(self):
"""
Wraps `bedtools slop`.
"""
@_log_to_history
@_wraps(prog="shiftBed", implicit="i", other=None, bam=None, uses_genome=True)
def shift(self):
"""
Wraps `bedtools shift`.
Shift each feature by user-defined number of bases. Returns a new BedTool object.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
Shift every feature by 5bp:
>>> b = a.shift(genome='hg19', s=5)
>>> print(b) #doctest: +NORMALIZE_WHITESPACE
chr1 6 105 feature1 0 +
chr1 105 205 feature2 0 +
chr1 155 505 feature3 0 -
chr1 905 955 feature4 0 +
Shift features on the '+' strand by -1bp and on '-' strand by +3bp:
>>> b = a.shift(genome='hg19', p=-1, m=3)
>>> print(b) #doctest: +NORMALIZE_WHITESPACE
chr1 0 99 feature1 0 +
chr1 99 199 feature2 0 +
chr1 153 503 feature3 0 -
chr1 899 949 feature4 0 +
# Disabling, see https://github.com/arq5x/bedtools2/issues/807
Shift features by a fraction of their length (0.50):
#>>> b = a.shift(genome='hg19', pct=True, s=0.50)
#>>> print(b) #doctest: +NORMALIZE_WHITESPACE
#chr1 50 149 feature1 0 +
#chr1 150 250 feature2 0 +
#chr1 325 675 feature3 0 -
#chr1 925 975 feature4 0 +
#
"""
@_log_to_history
@_wraps(prog="mergeBed", implicit="i", other=None, bam=None)
def merge(self):
"""
Wraps `bedtools merge`.
Merge overlapping features together. Returns a new BedTool object.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
Merge:
>>> c = a.merge()
Allow merging of features 500 bp apart:
>>> c = a.merge(d=500)
"""
@_log_to_history
@_wraps(prog="closestBed", implicit="a", other="b", bam=None)
def closest(self):
"""
Wraps `bedtools closest`.
Return a new BedTool object containing closest features in *b*. Note
that the resulting file is no longer a valid BED format; use the
special "_closest" methods to work with the resulting file.
Example usage::
a = BedTool('in.bed')
# get the closest feature in 'other.bed' on the same strand
b = a.closest('other.bed', s=True)
"""
@_log_to_history
@_wraps(prog="windowBed", implicit="a", other="b", bam="abam", nonbam="bed")
def window(self):
"""
Wraps `bedtools window`.
Example usage::
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> print(a.window(b, w=1000)) #doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 0 + chr1 155 200 feature5 0 -
chr1 1 100 feature1 0 + chr1 800 901 feature6 0 +
chr1 100 200 feature2 0 + chr1 155 200 feature5 0 -
chr1 100 200 feature2 0 + chr1 800 901 feature6 0 +
chr1 150 500 feature3 0 - chr1 155 200 feature5 0 -
chr1 150 500 feature3 0 - chr1 800 901 feature6 0 +
chr1 900 950 feature4 0 + chr1 155 200 feature5 0 -
chr1 900 950 feature4 0 + chr1 800 901 feature6 0 +
"""
@_log_to_history
@_wraps(prog="shuffleBed", implicit="i", other=None, bam=None, uses_genome=True)
def shuffle(self):
"""
Wraps `bedtools shuffle`.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> seed = 1 # so this test always returns the same results
>>> b = a.shuffle(genome='hg19', chrom=True, seed=seed)
>>> print(b) #doctest: +NORMALIZE_WHITESPACE
chr1 123081365 123081464 feature1 0 +
chr1 243444570 243444670 feature2 0 +
chr1 194620241 194620591 feature3 0 -
chr1 172792873 172792923 feature4 0 +
"""
@_log_to_history
@_wraps(prog="sortBed", implicit="i")
def sort(self):
"""
Wraps `bedtools sort`.
Note that chromosomes are sorted lexograpically, so chr12 will come
before chr9.
Example usage:
>>> a = pybedtools.BedTool('''
... chr9 300 400
... chr1 100 200
... chr1 1 50
... chr12 1 100
... chr9 500 600
... ''', from_string=True)
>>> print(a.sort()) #doctest: +NORMALIZE_WHITESPACE
chr1 1 50
chr1 100 200
chr12 1 100
chr9 300 400
chr9 500 600
"""
@_log_to_history
@_wraps(prog="annotateBed", implicit="i")
def annotate(self):
"""
Wraps `bedtools annotate`.
Annotate this BedTool with a list of other files.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b_fn = pybedtools.example_filename('b.bed')
>>> print(a.annotate(files=b_fn)) #doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 0 + 0.000000
chr1 100 200 feature2 0 + 0.450000
chr1 150 500 feature3 0 - 0.128571
chr1 900 950 feature4 0 + 0.020000
"""
@_log_to_history
@_wraps(prog="flankBed", implicit="i", uses_genome=True)
def flank(self):
"""
Wraps `bedtools flank`.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> print(a.flank(genome='hg19', b=100)) #doctest: +NORMALIZE_WHITESPACE
chr1 0 1 feature1 0 +
chr1 100 200 feature1 0 +
chr1 0 100 feature2 0 +
chr1 200 300 feature2 0 +
chr1 50 150 feature3 0 -
chr1 500 600 feature3 0 -
chr1 800 900 feature4 0 +
chr1 950 1050 feature4 0 +
"""
kwargs = self.check_genome(**kwargs)
if "i" not in kwargs:
kwargs["i"] = self.fn
cmds, tmp, stdin = self.handle_kwargs(prog="flankBed", **kwargs)
stream = call_bedtools(cmds, tmp, stdin=stdin)
return BedTool(stream)
@_log_to_history
@_wraps(
prog="genomeCoverageBed",
implicit="i",
bam="ibam",
genome_none_if=["ibam"],
genome_ok_if=["ibam"],
uses_genome=True,
nonbam="ALL",
)
def genome_coverage(self):
"""
Wraps `bedtools genomecov`.
Note that some invocations of `bedtools genomecov` do not result in
a properly-formatted BED file. For example, the default behavior is to
report a histogram of coverage. Iterating over the resulting,
non-BED-format file will raise exceptions in pybedtools' parser.
Consider using the `BedTool.to_dataframe` method to convert these
non-BED files into a pandas DataFrame for further use.
Example usage:
BAM file input does not require a genome:
>>> a = pybedtools.example_bedtool('x.bam')
>>> b = a.genome_coverage(bg=True)
>>> b.head(3) #doctest: +NORMALIZE_WHITESPACE
chr2L 9329 9365 1
chr2L 10212 10248 1
chr2L 10255 10291 1
Other input does require a genome:
>>> a = pybedtools.example_bedtool('x.bed')
>>> b = a.genome_coverage(bg=True, genome='dm3')
>>> b.head(3) #doctest: +NORMALIZE_WHITESPACE
chr2L 9329 9365 1
chr2L 10212 10248 1
chr2L 10255 10291 1
Non-BED format results:
>>> a = pybedtools.example_bedtool('x.bed')
>>> b = a.genome_coverage(genome='dm3')
>>> df = b.to_dataframe(names=['chrom', 'depth', 'n', 'chromsize', 'fraction'])
"""
# Alias for backwards compatibility
genomecov = genome_coverage
@_log_to_history
@_wraps(prog="coverageBed", implicit="a", other="b", bam="abam", nonbam="ALL")
def coverage(self):
"""
Wraps `bedtools coverage`.
Note that starting in version 2.24.0, BEDTools swapped the semantics of
the "a" and "b" files.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = b.coverage(a)
>>> c.head(3) #doctest: +NORMALIZE_WHITESPACE
chr1 155 200 feature5 0 - 2 45 45 1.0000000
chr1 800 901 feature6 0 + 1 1 101 0.0099010
"""
@_log_to_history
@_wraps(
prog="maskFastaFromBed",
implicit="bed",
other="fi",
make_tempfile_for="fo",
add_to_bedtool={"fo": "seqfn"},
check_stderr=_check_sequence_stderr,
)
def mask_fasta(self):
"""
Wraps `bedtools maskfasta`.
Masks a fasta file at the positions in a BED file and saves result as
'out' and stores the filename in seqfn.
>>> a = pybedtools.BedTool('chr1 100 110', from_string=True)
>>> fasta_fn = pybedtools.example_filename('test.fa')
>>> a = a.mask_fasta(fi=fasta_fn, fo='masked.fa.example')
>>> b = a.slop(b=2, genome='hg19')
>>> b = b.sequence(fi=a.seqfn)
>>> print(open(b.seqfn).read())
>chr1:98-112
TTNNNNNNNNNNAT
>>> os.unlink('masked.fa.example')
>>> if os.path.exists('masked.fa.example.fai'):
... os.unlink('masked.fa.example.fai')
"""
# Alias for backwards compatibility
maskfasta = mask_fasta
@_log_to_history
@_wraps(prog="complementBed", implicit="i", uses_genome=True)
def complement(self):
"""
Wraps `bedtools complement`.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> a.complement(genome='hg19').head(5) #doctest: +NORMALIZE_WHITESPACE
chr1 0 1
chr1 500 900
chr1 950 249250621
chr10 0 135534747
chr11 0 135006516
"""
@_log_to_history
@_wraps(prog="getOverlap", implicit="i")
def overlap(self):
"""
Wraps `bedtools overlap`.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> c = a.window(b, w=10).overlap(cols=[2,3,8,9])
>>> print(c) #doctest: +NORMALIZE_WHITESPACE
chr1 100 200 feature2 0 + chr1 155 200 feature5 0 - 45
chr1 150 500 feature3 0 - chr1 155 200 feature5 0 - 45
chr1 900 950 feature4 0 + chr1 800 901 feature6 0 + 1
"""
# TODO: needs test files and doctests written
@_log_to_history
@_wraps(prog="pairToBed", implicit="a", other="b", bam="abam", nonbam="bedpe")
def pair_to_bed(self):
"""
Wraps `bedtools pairtobed`.
"""
# Alias for backwards compatibility
pairtobed = pair_to_bed
@_log_to_history
@_wraps(prog="pairToPair", implicit="a", other="b")
def pair_to_pair(self):
"""
Wraps `bedtools pairtopair`.
"""
# Alias for backwards compatibility
pairtopair = pair_to_pair
@_log_to_history
@_wraps(prog="groupBy", implicit="i")
def groupby(self):
"""
Wraps `bedtools groupby`.
Example usage:
>>> a = pybedtools.example_bedtool('gdc.gff')
>>> b = pybedtools.example_bedtool('gdc.bed')
>>> c = a.intersect(b, c=True)
>>> d = c.groupby(g=[1, 4, 5], c=10, o=['sum'])
>>> print(d) #doctest: +NORMALIZE_WHITESPACE
chr2L 41 70 0
chr2L 71 130 2
chr2L 131 170 4
chr2L 171 200 0
chr2L 201 220 1
chr2L 41 130 2
chr2L 171 220 1
chr2L 41 220 7
chr2L 161 230 6
chr2L 41 220 7
"""
@_log_to_history
@_wraps(prog="tagBam", implicit="i", bam="i")
def tag_bam(self):
"""
Wraps `bedtools tag`.
`files` and `labels` should lists of equal length.
"""
# Alias for backwards compatibility
tag = tag_bam
@_log_to_history
@_wraps(prog="mapBed", implicit="a", other="b")
def map(self):
"""
Wraps `bedtools map`; See also :meth:`BedTool.each`.
"""
@_log_to_history
@_wraps(prog="multiIntersectBed", uses_genome=True, genome_if=["empty"])
def multi_intersect(self):
"""
Wraps `bedtools multiintersect`.
Provide a list of filenames as the "i" argument. e.g. if you already
have BedTool objects then use their `.fn` attribute, like this::
>>> x = pybedtools.BedTool()
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> result = x.multi_intersect(i=[a.fn, b.fn])
>>> print(result) #doctest: +NORMALIZE_WHITESPACE
chr1 1 155 1 1 1 0
chr1 155 200 2 1,2 1 1
chr1 200 500 1 1 1 0
chr1 800 900 1 2 0 1
chr1 900 901 2 1,2 1 1
chr1 901 950 1 1 1 0
"""
# Alias for backwards compatibility
multiinter = multi_intersect
@_log_to_history
@_wraps(prog="randomBed", uses_genome=True)
def random(self):
"""
Wraps `bedtools random`.
Since this method does not operate on an existing file, create
a BedTool with no arguments and then call this method, e.g.,
>>> x = BedTool()
>>> y = x.random(l=100, n=10, genome='hg19')
"""
@_log_to_history
@_wraps("bedpeToBam", implicit="i", uses_genome=True, force_bam=True)
def bedpe_to_bam(self):
"""
Wraps `bedtools bedpetobam`.
"""
# Alias for backwards compatibility
bedpetobam = bedpe_to_bam
@_log_to_history
@_wraps(prog="clusterBed", implicit="i")
def cluster(self):
"""
Wraps `bedtools cluster`.
"""
@_log_to_history
@_wraps(prog="unionBedGraphs")
def union_bedgraphs(self):
"""
Wraps `bedtools unionbedg`.
Warning: using the `header=True` kwarg will result in a file that is
not in true BED format, which may break downstream analysis.
"""
# Alias for backwards compatibility
unionbedg = union_bedgraphs
@_log_to_history
@_wraps(prog="windowMaker", uses_genome=True, genome_none_if=["b"], other="b", arg_order=["w"])
def window_maker(self):
"""
Wraps `bedtools makewindows`.
"""
# Alias for backwards compatibility
makewindows = window_maker
@_log_to_history
@_wraps(prog="expandCols", implicit="i")
def expand(self):
"""
Wraps `bedtools expand`
"""
@_log_to_history
@_wraps(prog="linksBed", implicit="i", add_to_bedtool={"stdout": "links_html"})
def links(self):
"""
Wraps `linksBed`.
The resulting BedTool will have a new attribute `links_html`. This
attribute is a temp filename containing the HTML links.
"""
@_log_to_history
@_wraps(prog="bedToIgv", implicit="i", add_to_bedtool={"stdout": "igv_script"})
def igv(self):
"""
Wraps `bedtools igv`.
The resulting BedTool will have a new attribute `igv_script`. This
attribute is a temp filename containing the IGV script.
"""
@_log_to_history
@_wraps(
prog="bamToFastq",
implicit="i",
bam="i",
make_tempfile_for="fq",
add_to_bedtool={"fq": "fastq"},
)
def bam_to_fastq(self):
"""
Wraps `bedtools bamtofastq`.
The `fq` argument is required.
The resulting BedTool will have a new attribute, `fastq`.
"""
# Alias for backwards compatibility
bamtofastq = bam_to_fastq
@_wraps(
prog="jaccard",
implicit="a",
other="b",
does_not_return_bedtool=_jaccard_output_to_dict,
)
def jaccard(self):
"""
Returns a dictionary with keys (intersection, union, jaccard).
"""
@_wraps(
prog="reldist",
implicit="a",
other="b",
does_not_return_bedtool=_reldist_output_handler,
)
def reldist(self):
"""
If detail=False, then return a dictionary with keys (reldist, count,
total, fraction), which is the summary of the bedtools reldist.
Otherwise return a BedTool, with the relative distance for each
interval in A in the last column.
"""
@_wraps(prog="sample", implicit="i", bam="i")
def sample(self):
"""
Wraps 'sample'.
"""
@_wraps(
prog="fisher",
implicit="a",
other="b",
uses_genome=True,
does_not_return_bedtool=helpers.FisherOutput,
)
def fisher(self):
"""
Wraps 'fisher'. Returns an object representing the output.
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> f = a.fisher(b, genome='hg19')
>>> print(f) # doctest: +NORMALIZE_WHITESPACE
# Number of query intervals: 4
# Number of db intervals: 2
# Number of overlaps: 3
# Number of possible intervals (estimated): 13958448
# phyper(3 - 1, 4, 13958448 - 4, 2, lower.tail=F)
# Contingency Table Of Counts
#_________________________________________
# | in -b | not in -b |
# in -a | 3 | 1 |
# not in -a | 0 | 13958444 |
#_________________________________________
# p-values for fisher's exact test
left right two-tail ratio
1 8.8247e-21 8.8247e-21 inf
>>> f.table['not in -a']['in -b']
0
>>> f.table['not in -a']['not in -b']
13958444
>>> f.table['in -a']['in -b']
3
>>> f.table['in -a']['not in -b']
1
>>> f.two_tail
8.8247e-21
"""
@_wraps(prog="split", implicit="i", does_not_return_bedtool=helpers.SplitOutput)
def splitbed(self):
"""
Wraps 'bedtools split'.
BedTool objects have long had a `split` method which splits intervals
according to a custom function. Now that BEDTools has a `split` tool,
the method name conflicts. To maintain backwards compatibility, the
method wrapping the BEDTools command is called `splitbed`.
Since this tool does not return a single BED file, the method parses
the output and returns a SplitOutput object, which includes an
attribute, `bedtools`, that is a list of BedTool objects created from
the split files.
To keep the working directory clean, you may want to consider using
`prefix=BedTool._tmp()` to get a temp file that will be deleted when
Python exits cleanly.
>>> a = pybedtools.example_bedtool('a.bed')
>>> s = a.splitbed(n=2, p="split")
>>> assert len(a) == 4, len(a)
>>> assert len(s.bedtools) == 2
>>> print(s.bedtools[0]) # doctest: +NORMALIZE_WHITESPACE
chr1 150 500 feature3 0 -
>>> print(s.bedtools[1]) # doctest: +NORMALIZE_WHITESPACE
chr1 100 200 feature2 0 +
chr1 1 100 feature1 0 +
chr1 900 950 feature4 0 +
"""
@_wraps(prog="spacing", implicit="i")
def spacing(self):
"""
Wraps `bedtools spacing`
>>> a = pybedtools.example_bedtool('a.bed')
>>> print(a.spacing()) # doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 0 + .
chr1 100 200 feature2 0 + 0
chr1 150 500 feature3 0 - -1
chr1 900 950 feature4 0 + 400
"""
def count(self):
"""
Count the number features in this BedTool.
Number of features in BED file. Does the same thing as len(self), which
actually just calls this method.
Only counts the actual features. Ignores any track lines, browser
lines, lines starting with a "#", or blank lines.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> a.count()
4
"""
if hasattr(self, "next") or hasattr(self, "__next__"):
return sum(1 for _ in self)
return sum(1 for _ in iter(self))
def print_sequence(self):
"""
Print the sequence that was retrieved by BedTool.sequence.
See usage example in :meth:`BedTool.sequence`.
"""
if not hasattr(self, "seqfn"):
raise ValueError("Use .sequence(fasta) to get the sequence first")
f = open(self.seqfn)
s = f.read()
f.close()
return s
def save_seqs(self, fn):
"""
Save sequences, after calling BedTool.sequence.
In order to use this function, you need to have called
the :meth:`BedTool.sequence()` method.
A new BedTool object is returned which references the newly saved file.
Example usage:
>>> a = pybedtools.BedTool('''
... chr1 1 10
... chr1 50 55''', from_string=True)
>>> fasta = pybedtools.example_filename('test.fa')
>>> a = a.sequence(fi=fasta)
>>> print(open(a.seqfn).read())
>chr1:1-10
GATGAGTCT
>chr1:50-55
CCATC
>>> b = a.save_seqs('example.fa')
>>> assert open(b.fn).read() == open(a.fn).read()
>>> if os.path.exists('example.fa'):
... os.unlink('example.fa')
"""
if not hasattr(self, "seqfn"):
raise ValueError("Use .sequence(fasta) to get the sequence first")
fout = open(fn, "w")
fout.write(open(self.seqfn).read())
fout.close()
new_bedtool = BedTool(self.fn)
new_bedtool.seqfn = fn
return new_bedtool
def randomstats(
self,
other,
iterations,
new=False,
genome_fn=None,
include_distribution=False,
**kwargs
):
"""
Dictionary of results from many randomly shuffled intersections.
Sends args and kwargs to :meth:`BedTool.randomintersection` and
compiles results into a dictionary with useful stats. Requires
numpy.
If `include_distribution` is True, then the dictionary will include the
full distribution; otherwise, the distribution is deleted and cleaned
up to save on memory usage.
This is one possible way of assigning significance to overlaps between
two files. See, for example:
Negre N, Brown CD, Shah PK, Kheradpour P, Morrison CA, et al. 2010
A Comprehensive Map of Insulator Elements for the Drosophila
Genome. PLoS Genet 6(1): e1000814. doi:10.1371/journal.pgen.1000814
Example usage:
Make chromsizes a very small genome for this example:
>>> chromsizes = {'chr1':(1,1000)}
>>> a = pybedtools.example_bedtool('a.bed').set_chromsizes(chromsizes)
>>> b = pybedtools.example_bedtool('b.bed')
>>> try:
... results = a.randomstats(b, 100, debug=True)
... except ImportError:
... pass
*results* is a dictionary that you can inspect.
(Note that the following examples are not run as part of the doctests
to avoid forcing users to install NumPy just to pass tests)
The actual overlap::
print(results['actual'])
3
The median of all randomized overlaps::
print(results['median randomized'])
2.0
The percentile of the actual overlap in the distribution of randomized
overlaps, which can be used to get an empirical p-value::
print(results['percentile'])
90.0
"""
if ("intersect_kwargs" not in kwargs) or (kwargs["intersect_kwargs"] is None):
kwargs["intersect_kwargs"] = {"u": True}
try:
import numpy as np
except ImportError:
raise ImportError("Need to install NumPy for stats...")
def percentileofscore(a, score):
"""
copied from scipy.stats.percentileofscore, to avoid dependency on
scipy.
"""
a = np.array(a)
n = len(a)
if not (np.any(a == score)):
a = np.append(a, score)
a_len = np.array(list(range(len(a))))
else:
a_len = np.array(list(range(len(a)))) + 1.0
a = np.sort(a)
idx = tuple([a == score])
pct = (np.mean(a_len[idx]) / n) * 100.0
return pct
if isinstance(other, six.string_types):
other = BedTool(other)
else:
assert isinstance(
other, BedTool
), "Either filename or another BedTool instance required"
# Actual (unshuffled) counts.
i_kwargs = kwargs["intersect_kwargs"]
actual = len(self.intersect(other, **i_kwargs))
# List of counts from randomly shuffled versions.
# Length of counts == *iterations*.
if not new:
distribution = self.randomintersection(
other, iterations=iterations, **kwargs
)
else:
# use new mechanism
if genome_fn is None:
raise ValueError(
"`genome_fn` must be provided if using the "
"new _randomintersection mechanism"
)
distribution = self._randomintersection(
other, iterations=iterations, genome_fn=genome_fn, **kwargs
)
distribution = np.array(list(distribution))
# Median of distribution
med_count = np.median(distribution)
n = float(len(distribution))
frac_above = sum(distribution > actual) / n
frac_below = sum(distribution < actual) / n
normalized = actual / med_count
lower_thresh = 2.5
upper_thresh = 97.5
lower, upper = np.percentile(distribution, [lower_thresh, upper_thresh])
actual_percentile = percentileofscore(distribution, actual)
d = {
"iterations": iterations,
"actual": actual,
"file_a": self.fn,
"file_b": other.fn,
self.fn: len(self),
other.fn: len(other),
"self": len(self),
"other": len(other),
"frac randomized above actual": frac_above,
"frac randomized below actual": frac_below,
"median randomized": med_count,
"normalized": normalized,
"percentile": actual_percentile,
"lower_%sth" % lower_thresh: lower,
"upper_%sth" % upper_thresh: upper,
}
if include_distribution:
d["distribution"] = distribution
else:
del distribution
return d
def random_op(self, *args, **kwargs):
"""
For backwards compatibility; see BedTool.parallel_apply instead.
"""
return self.parallel_apply(*args, **kwargs)
def parallel_apply(
self, iterations, func, func_args, func_kwargs, processes=1, _orig_pool=None
):
"""
Generalized method for applying a function in parallel.
Typically used when having to do many random shufflings.
`func_args` and `func_kwargs` will be passed to `func` each time in
`iterations`, and these iterations will be split across `processes`
processes.
Notes on the function, `func`:
* the function should manually remove any tempfiles created. This
is because the BedTool.TEMPFILES list of auto-created tempfiles
does not share state across processes, so things will not get
cleaned up automatically as they do in a single-process
pybedtools session.
* this includes deleting any "chromsizes" or genome files --
generally it will be best to require a genome filename in
`func_kwargs` if you'll be using any BedTool methods that accept
the `g` kwarg.
* the function should be a module-level function (rather than a
class method) because class methods can't be pickled across
process boundaries
* the function can have any signature and have any return value
`_orig_pool` can be a previously-created multiprocessing.Pool instance;
otherwise, a new Pool will be created with `processes`
"""
if processes == 1:
for it in range(iterations):
yield func(*func_args, **func_kwargs)
raise StopIteration
if _orig_pool:
p = _orig_pool
else:
p = multiprocessing.Pool(processes)
iterations_each = [iterations / processes] * processes
iterations_each[-1] += iterations % processes
# FYI some useful info on apply_async:
# http://stackoverflow.com/questions/8533318/
# python-multiprocessing-pool-when-to-use-apply-apply-async-or-map
#
# Here, we don't care about the order, and don't want the subprocesses
# to block.
results = [
p.apply_async(func, func_args, func_kwargs) for it in range(iterations)
]
for r in results:
yield r.get()
raise StopIteration
def random_jaccard(
self,
other,
genome_fn=None,
iterations=None,
processes=1,
_orig_pool=None,
shuffle_kwargs=None,
jaccard_kwargs=None,
):
"""
Computes the naive Jaccard statistic (intersection divided by union).
.. note::
If you don't need the randomization functionality of this method,
you can use the simpler BedTool.jaccard method instead.
See Favorov et al. (2012) PLoS Comput Biol 8(5): e1002529 for more
info on the Jaccard statistic for intersections.
If `iterations` is None, then do not perform random shufflings.
If `iterations` is an integer, perform `iterations` random shufflings,
each time computing the Jaccard statistic to build an empirical
distribution. `genome_fn` will also be needed; optional `processes`
will split the iteations across multiple CPUs.
Returns a tuple of the observed Jaccard statistic and a list of the
randomized statistics (which will be an empty list if `iterations` was
None).
"""
if shuffle_kwargs is None:
shuffle_kwargs = {}
if jaccard_kwargs is None:
jaccard_kwargs = {}
if not genome_fn:
raise ValueError("Need a genome filename in order to perform randomization")
return list(
self.parallel_apply(
iterations=iterations,
func=pybedtools.stats.random_jaccard,
func_args=(self, other),
func_kwargs=dict(
genome_fn=genome_fn,
shuffle_kwargs=shuffle_kwargs,
jaccard_kwargs=jaccard_kwargs,
),
processes=processes,
_orig_pool=_orig_pool,
)
)
def _randomintersection(
self,
other,
iterations,
genome_fn,
intersect_kwargs=None,
_orig_pool=None,
shuffle_kwargs=None,
processes=1,
):
"""
Re-implementation of BedTool.randomintersection using the new
`random_op` method
"""
if shuffle_kwargs is None:
shuffle_kwargs = {}
if intersect_kwargs is None:
intersect_kwargs = dict(u=True)
if not genome_fn:
raise ValueError("Need a genome filename in order to perform randomization")
return list(
self.parallel_apply(
iterations=iterations,
func=pybedtools.stats.random_intersection,
func_args=(self, other),
func_kwargs=dict(
genome_fn=genome_fn,
shuffle_kwargs=shuffle_kwargs,
intersect_kwargs=intersect_kwargs,
),
processes=processes,
_orig_pool=_orig_pool,
)
)
def randomintersection_bp(
self,
other,
iterations,
genome_fn,
intersect_kwargs=None,
shuffle_kwargs=None,
processes=1,
_orig_pool=None,
):
"""
Like randomintersection, but return the bp overlap instead of the
number of intersecting intervals.
"""
if shuffle_kwargs is None:
shuffle_kwargs = {}
if intersect_kwargs is None:
intersect_kwargs = {}
if not genome_fn:
raise ValueError("Need a genome filename in order to perform randomization")
return list(
self.parallel_apply(
iterations=iterations,
func=pybedtools.stats.random_intersection_bp,
func_args=(self, other),
func_kwargs=dict(
genome_fn=genome_fn,
shuffle_kwargs=shuffle_kwargs,
intersect_kwargs=intersect_kwargs,
),
processes=processes,
_orig_pool=_orig_pool,
)
)
def randomintersection(
self,
other,
iterations,
intersect_kwargs=None,
shuffle_kwargs=None,
debug=False,
report_iterations=False,
processes=None,
_orig_processes=None,
):
"""
Perform `iterations` shufflings, each time intersecting with `other`.
Returns a generator of integers where each integer is the number of
intersections of a shuffled file with *other*. This distribution can
be used in downstream analysis for things like empirical p-values.
*intersect_kwargs* and *shuffle_kwargs* are passed to self.intersect()
and self.shuffle() respectively. By default for intersect, u=True is
specified -- but s=True might be a useful option for strand-specific
work.
Useful kwargs for *shuffle_kwargs* are chrom, excl, or incl. If you
use the "seed" kwarg, that seed will be used *each* time shuffleBed is
called -- so all your randomization results will be identical for each
iteration. To get around this and to allow for tests, debug=True will
set the seed to the iteration number. You may also break up the
intersections across multiple processes with *processes* > 1.
Example usage:
>>> chromsizes = {'chr1':(0, 1000)}
>>> a = pybedtools.example_bedtool('a.bed')
>>> a = a.set_chromsizes(chromsizes)
>>> b = pybedtools.example_bedtool('b.bed')
>>> results = a.randomintersection(b, 10, debug=True)
>>> print(list(results))
[1, 0, 1, 2, 4, 2, 2, 1, 2, 4]
"""
if processes is not None:
p = multiprocessing.Pool(processes)
iterations_each = [iterations // processes] * processes
iterations_each[-1] += iterations % processes
results = [
p.apply_async(
_call_randomintersect,
(self, other, it),
dict(
intersect_kwargs=intersect_kwargs,
shuffle_kwargs=shuffle_kwargs,
debug=debug,
report_iterations=report_iterations,
_orig_processes=processes,
),
)
for it in iterations_each
]
for r in results:
for value in r.get():
yield value
raise StopIteration
if shuffle_kwargs is None:
shuffle_kwargs = {}
if intersect_kwargs is None:
intersect_kwargs = {"u": True}
if "u" not in intersect_kwargs:
intersect_kwargs["u"] = True
resort = intersect_kwargs.get("sorted", False)
for i in range(iterations):
if debug:
shuffle_kwargs["seed"] = i
if report_iterations:
if _orig_processes > 1:
msg = "\rapprox (total across %s processes): %s" % (
_orig_processes,
i * _orig_processes,
)
else:
msg = "\r%s" % i
sys.stderr.write(msg)
sys.stderr.flush()
# Re-sort if sorted=True in kwargs
if resort:
tmp0 = self.shuffle(**shuffle_kwargs)
tmp = tmp0.sort()
else:
tmp = self.shuffle(**shuffle_kwargs)
tmp2 = tmp.intersect(other, stream=True, **intersect_kwargs)
yield len(tmp2)
# Close the open stdouts from subprocess.Popen calls. Note: doing
# this in self.__del__ doesn't fix the open file limit bug; it
# needs to be done here.
# if resort:
# tmp0.fn.close()
# tmp.fn.close()
tmp2.fn.close()
del tmp
del tmp2
@_log_to_history
def cat(self, *others, **kwargs):
"""
Concatenate interval files together.
Concatenates two BedTool objects (or an object and a file) and does an
optional post-merge of the features.
*postmerge=True* by default; use *postmerge=False* if you want to keep
features separate.
*force_truncate=False* by default; *force_truncate=True* to truncate
all files to chrom, start, stop.
When *force_truncate=False* and *postmerge=False*, the output will
contain the smallest number of fields observed across all inputs. This
maintains compatibility with BEDTools programs, which assume constant
number of fields in all lines of a file.
Other kwargs are sent to :meth:`BedTool.merge` (and assuming that
*postmerge=True*).
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = pybedtools.example_bedtool('b.bed')
>>> print(a.cat(b)) #doctest: +NORMALIZE_WHITESPACE
chr1 1 500
chr1 800 950
>>> print(a.cat(*[b,b],
... postmerge=False)) #doctest: +NORMALIZE_WHITESPACE
chr1 1 100 feature1 0 +
chr1 100 200 feature2 0 +
chr1 150 500 feature3 0 -
chr1 900 950 feature4 0 +
chr1 155 200 feature5 0 -
chr1 800 901 feature6 0 +
chr1 155 200 feature5 0 -
chr1 800 901 feature6 0 +
"""
assert len(others) > 0, "You must specify at least one other bedfile!"
other_beds = []
for other in others:
if isinstance(other, six.string_types):
other = BedTool(other)
else:
assert isinstance(
other, BedTool
), "Either filename or another BedTool instance required"
other_beds.append(other)
# postmerge and force_trucate don't get passed on to merge
postmerge = kwargs.pop("postmerge", True)
force_truncate = kwargs.pop("force_truncate", False)
stream_merge = kwargs.get("stream", False)
if stream_merge and postmerge:
raise ValueError(
"The post-merge step in the `cat()` method "
"perfoms a sort, which uses stream=True. Using "
"stream=True for the merge as well will result in a "
"deadlock!"
)
# if filetypes and field counts are the same, don't truncate
if not force_truncate:
try:
a_type = self.file_type
files = [self] + other_beds
filetypes = set(
[self.file_type] + [i.file_type for i in other_beds]
).difference(["empty"])
field_nums = (
set([self.field_count()] + [i.field_count() for i in other_beds])
.difference([None])
.difference([0])
)
same_field_num = len(field_nums) == 1
same_type = len(set(filetypes)) == 1
except ValueError:
raise ValueError(
"Can't check filetype or field count -- "
"is one of the files you're merging a 'streaming' "
"BedTool? If so, use .saveas() to save to file first"
)
tmp = self._tmp()
if not force_truncate and same_type and same_field_num:
with open(tmp, "w") as TMP:
for f in self:
TMP.write(str(f))
for other in other_beds:
for f in other:
TMP.write(str(f))
# Types match, so we can use the min number of fields observed across
# all inputs
elif not force_truncate and same_type:
minfields = min(field_nums)
with open(tmp, "w") as TMP:
for f in self:
TMP.write("\t".join(f.fields[:minfields]) + "\n")
for other in other_beds:
for f in other:
TMP.write("\t".join(f.fields[:minfields]) + "\n")
# Otherwise, use the zero-based chrom/start/stop to create a BED3,
# which will work when catting a GFF and a BED together.
else:
with open(tmp, "w") as TMP:
for f in self:
TMP.write("%s\t%i\t%i\n" % (f.chrom, f.start, f.end))
for other in other_beds:
for f in other:
TMP.write("%s\t%i\t%i\n" % (f.chrom, f.start, f.end))
c = BedTool(tmp)
if postmerge:
d = c.sort(stream=True).merge(**kwargs)
# Explicitly delete -- needed when using multiprocessing
os.unlink(tmp)
return d
else:
return c
@_log_to_history
def saveas(self, fn=None, trackline=None, compressed=None):
"""
Make a copy of the BedTool.
Optionally adds `trackline` to the beginning of the file.
Optionally compresses output using gzip.
if the filename extension is .gz, or compressed=True,
the output is compressed using gzip
Returns a new BedTool for the newly saved file.
A newline is automatically added to the trackline if it does not
already have one.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = a.saveas('other.bed')
>>> b.fn
'other.bed'
>>> print(b == a)
True
>>> b = a.saveas('other.bed', trackline="name='test run' color=0,55,0")
>>> open(b.fn).readline()
"name='test run' color=0,55,0\\n"
>>> if os.path.exists('other.bed'):
... os.unlink('other.bed')
"""
if fn is None:
fn = self._tmp()
# Default to compressed if extension is .gz
if compressed is None:
__, extension = os.path.splitext(fn)
if extension == ".gz":
compressed = True
else:
compressed = False
in_compressed = isinstance(self.fn, six.string_types) and isGZIP(self.fn)
fn = self._collapse(
self,
fn=fn,
trackline=trackline,
in_compressed=in_compressed,
out_compressed=compressed,
)
return BedTool(fn)
@_log_to_history
def moveto(self, fn=None):
"""
Move to a new filename (can be much quicker than BedTool.saveas())
Move BED file to new filename, `fn`.
Returns a new BedTool for the new file.
Example usage:
>>> # make a copy so we don't mess up the example file
>>> a = pybedtools.example_bedtool('a.bed').saveas()
>>> a_contents = str(a)
>>> b = a.moveto('other.bed')
>>> b.fn
'other.bed'
>>> b == a_contents
True
"""
if not isinstance(self.fn, six.string_types):
fn = self._collapse(self, fn=fn)
else:
shutil.move(self.fn, fn)
return BedTool(fn)
@_log_to_history
def random_subset(self, n=None, f=None, seed=None):
"""
Return a BedTool containing a random subset.
NOTE: using `n` will be slower and use more memory than using `f`.
Parameters
----------
n : int
Number of features to return. Only one of `n` or `f` can be provided.
f : float, 0 <= f <= 1
Fraction of features to return. Cannot be provided with `n`.
seed : float or int
Set random.seed
Example
-------
>>> seed = 0 # only for test, otherwise use None
`n` will always give the same number of returned features, but will be
slower since it is creating an index and then shuffling it.
>>> a = pybedtools.example_bedtool('a.bed')
>>> b = a.random_subset(n=2)
>>> len(b)
2
Using a fraction `f` will be faster but depending on seed will result
in slightly different total numbers.
>>> a = pybedtools.example_bedtool('x.bam')
>>> len(a)
45593
>>> b = a.random_subset(f=0.4, seed=seed)
>>> len(b)
18316
Check that we have approximately the right fraction
>>> print('{0:.2f}'.format(len(b) / len(a)))
0.40
"""
if ((n is None) and (f is None)) or ((n is not None) and (f is not None)):
raise ValueError("Exactly one of `n` or `f` must be provided")
tmpfn = self._tmp()
if seed is not None:
random.seed(seed)
if n:
idxs = list(range(len(self)))
random.shuffle(idxs)
idxs = idxs[:n]
with open(tmpfn, "w") as tmp:
for i, feature in enumerate(self):
if i in idxs:
tmp.write(str(feature))
elif f:
with open(tmpfn, "w") as tmp:
for i in self:
if random.random() <= f:
tmp.write(str(i))
return BedTool(tmpfn)
def total_coverage(self):
"""
Return the total number of bases covered by this interval file.
Does a self.merge() first to remove potentially multiple-counting
bases.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
This does a merge() first, so this is what the total coverage is
counting:
>>> print(a.merge()) #doctest: +NORMALIZE_WHITESPACE
chr1 1 500
chr1 900 950
>>> print(a.total_coverage())
549
"""
b = self.merge()
total_bp = 0
for feature in b.features():
total_bp += len(feature)
return total_bp
@_log_to_history
def with_attrs(self, **kwargs):
"""
Helper method for adding attributes in the middle of a pipeline.
Given arbitrary keyword arguments, turns the keys and values into
attributes. Useful for labeling BedTools at creation time.
Example usage:
>>> # add a "label" attribute to each BedTool
>>> a = pybedtools.example_bedtool('a.bed')\
.with_attrs(label='transcription factor 1')
>>> b = pybedtools.example_bedtool('b.bed')\
.with_attrs(label='transcription factor 2')
>>> for i in [a, b]:
... print('{0} features for {1}'.format(i.count(), i.label))
4 features for transcription factor 1
2 features for transcription factor 2
"""
for key, value in list(kwargs.items()):
setattr(self, key, value)
return self
def as_intervalfile(self):
"""
Returns an IntervalFile of this BedTool for low-level interface.
"""
if not isinstance(self.fn, six.string_types):
fn = self._collapse(self.fn)
else:
fn = self.fn
return IntervalFile(fn)
def liftover(self, chainfile, unmapped=None, liftover_args=""):
"""
Returns a new BedTool of the liftedOver features, saving the unmapped
ones as `unmapped`. If `unmapped` is None, then discards the unmapped
features.
`liftover_args` is a string of additional args that is passed,
verbatim, to liftOver.
Needs `liftOver` from UCSC to be on the path and a `chainfile`
downloaded from UCSC.
"""
result = BedTool._tmp()
if unmapped is None:
unmapped = BedTool._tmp()
cmds = ["liftOver", liftover_args, self.fn, chainfile, result, unmapped]
os.system(" ".join(cmds))
return BedTool(result)
def absolute_distance(self, other, closest_kwargs=None, use_midpoints=False):
"""
Returns an iterator of the *absolute* distances between features in
self and other.
If `use_midpoints` is True, then only use the midpoints of features
(which will return values where features are overlapping). Otherwise,
when features overlap the value will always be zero.
`closest_kwargs` are passed to self.closest(); either `d` or
'D` are required in order to get back distance values (`d=True` is
default)
"""
from .featurefuncs import midpoint
if closest_kwargs is None:
closest_kwargs = {"d": True}
if "D" not in closest_kwargs:
closest_kwargs.update(dict(d=True))
if use_midpoints:
mid_self = self.each(midpoint).saveas()
mid_other = other.each(midpoint).saveas()
c = mid_self.closest(mid_other, stream=True, **closest_kwargs)
else:
c = self.closest(other, stream=True, **closest_kwargs)
for i in c:
yield int(i[-1])
def relative_distance(self, other, genome=None, g=None):
"""
Returns an iterator of relative distances between features in self and
other.
First computes the midpoints of self and other, then returns distances
of each feature in `other` relative to the distance between `self`
features.
Requires either `genome` (dictionary of chromsizes or assembly name) or
`g` (filename of chromsizes file).
"""
if (genome is None) and (g is None):
raise ValueError("Need either `genome` or `g` arg for relative distance")
if genome and g:
raise ValueError("Please specify only one of `genome` or `g`")
if genome:
g_dict = dict(genome=genome)
if g:
g_dict = dict(g=g)
from .featurefuncs import midpoint
# This gets the space between features in self.
c = self.each(midpoint).complement(**g_dict)
mid_other = other.each(midpoint).saveas()
hits = c.intersect(other, wao=True, stream=True)
for i in hits:
yield float(i[-1]) / len(i)
def colormap_normalize(self, vmin=None, vmax=None, percentile=False, log=False):
"""
Returns a normalization instance for use by featurefuncs.add_color().
Parameters
----------
vmin, vmax : float, int, or None
`vmin` and `vmax` set the colormap bounds; if None then
these will be determined from the scores in the BED file.
log : bool
If True, put the scores on a log scale; of course be careful
if you have negative scores
percentile : bool
If True, interpret vmin and vmax as a percentile in the range
[0,100] rather than absolute values.
"""
field_count = self.field_count()
if (self.file_type != "bed") or (field_count < 5):
raise ValueError("colorizing only works for BED files with score " "fields")
import matplotlib
import numpy as np
if log:
norm = matplotlib.colors.LogNorm()
else:
norm = matplotlib.colors.Normalize()
scores = np.array([i.score for i in self], dtype=float)
scores = scores[np.isfinite(scores)]
norm.autoscale(scores)
if vmin is not None:
if percentile:
vmin = np.percentile(scores, vmin)
norm.vmin = vmin
if vmax is not None:
if percentile:
vmax = np.percentile(scores, vmax)
norm.vmax = vmax
return norm
def at(self, inds):
"""
Returns a new BedTool with only intervals at lines `inds`
"""
length = len(inds)
def _gen():
k = 0
for i, feature in enumerate(self):
if i == inds[k]:
yield feature
k += 1
if k == length:
break
return BedTool(_gen()).saveas()
def to_dataframe(self, disable_auto_names=False, *args, **kwargs):
"""
Create a pandas.DataFrame, passing args and kwargs to pandas.read_csv
The separator kwarg `sep` is given a tab `\\t` as value by default.
Parameters
----------
disable_auto_names : bool
By default, the created dataframe fills in column names
automatically according to the detected filetype (e.g., "chrom",
"start", "end" for a BED3 file). Set this argument to True to
disable this behavior.
"""
# Complain if BAM or if not a file
if self._isbam:
raise ValueError("BAM not supported for converting to DataFrame")
if not isinstance(self.fn, six.string_types):
raise ValueError("use .saveas() to make sure self.fn is a file")
try:
import pandas
except ImportError:
raise ImportError("pandas must be installed to convert to pandas.DataFrame")
# Otherwise we're good:
names = kwargs.get("names", None)
if names is None and not disable_auto_names:
try:
_names = settings._column_names[self.file_type][: self.field_count()]
if len(_names) < self.field_count():
warn(
"Default names for filetype %s are:\n%s\nbut file has "
"%s fields; you can supply custom names with the "
"`names` kwarg" % (self.file_type, _names, self.field_count())
)
_names = None
except KeyError:
_names = None
kwargs["names"] = _names
if os.path.isfile(self.fn) and os.path.getsize(self.fn) > 0:
return pandas.read_csv(self.fn, *args, sep="\t", **kwargs)
else:
return pandas.DataFrame()
def tail(self, lines=10, as_string=False):
"""
Like `head`, but prints last 10 lines of the file by default.
To avoid consuming iterables, this only works with file-based, non-BAM
BedTool objects.
Use `as_string=True` to return a string.
"""
if self._isbam:
raise ValueError("tail() not yet implemented for BAM files")
if not isinstance(self.fn, six.string_types):
raise ValueError(
"tail() not implemented for non-file-based "
"BedTool objects. Please use saveas() first."
)
bufsize = 8192
offset = bufsize
f = open(self.fn, "rb")
# whence=2 arg means relative to end (i.e., go to the end)
f.seek(0, 2)
file_size = f.tell()
data = []
while True:
if file_size < bufsize:
offset = file_size
f.seek(-offset, 2)
chunk = f.read(offset)
data.extend(chunk.splitlines(True))
if len(data) >= lines or offset == file_size:
break
offset += bufsize
result = "".join([i.decode() for i in data[-lines:]])
if as_string:
return result
else:
print(result)
class BAM(object):
def __init__(self, stream):
"""
Wraps pysam.Samfile so that it yields pybedtools.Interval objects when
iterated over.
The pysam.Samfile can be accessed via the .pysam_bamfile attribute.
"""
self.stream = stream
if not isinstance(self.stream, six.string_types):
raise ValueError("Only files are supported, not streams")
self.pysam_bamfile = pysam.Samfile(self.stream)
def _aligned_segment_to_interval(self, r):
if r.rname >= 0:
rname = self.pysam_bamfile.getrname(r.rname)
else:
rname = "*"
if r.rnext >= 0:
if r.rnext == r.rname:
rnext = "="
else:
rnext = self.pysam_bamfile.getrname(r.rnext)
else:
rnext = "*"
# SAM spec says if unavailable should be set to 0. Pysam sets to -1.
if r.pnext <= 0:
pnext = "0"
else:
# +1 here because cbedtools.pyx expects SAM -- which is 1-based --
# but pysam uses 0-based.
pnext = str(r.pnext + 1)
if r.cigarstring:
cigarstring = r.cigarstring
else:
cigarstring = "*"
# Rudimentary support.
# TODO: remove when refactoring to new BAM iterating
tags = []
for k, v in r.tags:
if isinstance(v, int):
t = "i"
elif isinstance(v, float):
t = "f"
else:
t = "Z"
tags.append("{0}:{1}:{2}".format(k, t, v))
tags = "\t".join(tags)
if r.seq:
seq = r.seq
else:
seq = "*"
if r.qual:
qual = r.qual
else:
qual = "*"
fields = [
r.qname,
str(r.flag),
rname,
# +1 here because cbedtools.pyx expects SAM -- which is 1-based --
# but pysam uses 0-based.
str(r.pos + 1),
str(r.mapq),
cigarstring,
rnext,
pnext,
str(r.tlen),
seq,
qual,
]
if tags:
fields.append(tags)
if None in fields:
raise ValueError("Found 'None' in fields: %s" % fields)
return create_interval_from_list(fields)
def __iter__(self):
return self
# TODO: this is PAINFUL but it ensures that existing tests work. Once all
# tests work, the new behavior will be to yield pysam AlignedSegment
# objects directly.
def __next__(self):
return self._aligned_segment_to_interval(next(self.pysam_bamfile))
def next(self):
return self.__next__()
class History(list):
def __init__(self):
"""
Represents one or many HistorySteps. Mostly used for nicely formatting
a series of HistorySteps.
"""
list.__init__(self)
class HistoryStep(object):
def __init__(self, method, args, kwargs, bedtool_instance, parent_tag, result_tag):
"""
Class to represent one step in the history.
Mostly used for its __repr__ method, to try and exactly replicate code
that can be pasted to re-do history steps
"""
try:
self.method = method._name
except AttributeError:
if six.PY3:
self.method = method.__name__
else:
self.method = method.func_name
self.args = args
self.kwargs = kwargs
self.fn = bedtool_instance.fn
tag = "".join(random.choice(string.ascii_lowercase) for _ in range(8))
self.parent_tag = parent_tag
self.result_tag = result_tag
def _clean_arg(self, arg):
"""
Wrap strings in quotes and convert bedtool instances to filenames.
"""
if isinstance(arg, pybedtools.BedTool):
arg = arg.fn
if isinstance(arg, six.string_types):
arg = '"%s"' % arg
return arg
def __repr__(self):
# Still not sure whether to use pybedtools.bedtool() or bedtool()
s = ""
s += " "
if os.path.exists(self.fn):
s += 'BedTool("%(fn)s").%(method)s(%%s%%s)' % self.__dict__
else:
s += 'BedTool("MISSING FILE: %(fn)s")' % self.__dict__
s += ".%(method)s(%%s%%s)" % self.__dict__
# Format args and kwargs
args_string = ",".join(map(self._clean_arg, self.args))
kwargs_string = ",".join(
["%s=%s" % (i[0], self._clean_arg(i[1])) for i in list(self.kwargs.items())]
)
# stick a comma on the end if there's something here
if len(args_string) > 0:
args_string += ", "
s = s % (args_string, kwargs_string)
s += ", parent tag: %s" % self.parent_tag
s += ", result tag: %s" % self.result_tag
return s
def example_bedtool(fn):
"""
Return a bedtool using a bed file from the pybedtools examples directory.
Use :func:`list_example_files` to see a list of files that are included.
"""
fn = os.path.join(filenames.data_dir(), fn)
if not os.path.exists(fn):
msg = "%s does not exist" % fn
if six.PY2:
raise ValueError(msg)
raise FileNotFoundError(msg)
return BedTool(fn)
if __name__ == "__main__":
import doctest
doctest.testmod(optionflags=doctest.ELLIPSIS | doctest.NORMALIZE_WHITESPACE)
pybedtools-0.9.0/pybedtools/cbedtools.pxd 0000664 0000000 0000000 00000005135 14173526301 0020571 0 ustar 00root root 0000000 0000000 from cpython cimport bool
from libcpp.vector cimport vector
from libcpp.string cimport string
from cython.operator cimport dereference as deref
"""
Create Cython definitions for the Interval API defined in Interval.h
"""
cdef extern from "bedFile.h":
cdef enum BedLineStatus:
BED_MALFORMED = -2
BED_INVALID = -1
BED_HEADER = 0
BED_BLANK = 1
BED_VALID = 2
ctypedef unsigned int CHRPOS
ctypedef bint BOOL
cdef cppclass BED:
string chrom
CHRPOS start
CHRPOS end
string name
string score
string strand
CHRPOS o_start # the start of an overlap with another interval
CHRPOS o_end # the end of an overlap with another interval
unsigned short bedType
string file_type
BedLineStatus status
vector[string] fields
# constructors
BED()
BED(string chrom, CHRPOS start, CHRPOS end, string name,
string score, string strand, vector[string] fields,
CHRPOS o_start, CHRPOS o_end,
unsigned short bedType, string file_type, BedLineStatus status)
BED(string chrom, CHRPOS start, CHRPOS end)
BED(string chrom, CHRPOS start, CHRPOS end, string strand)
BED(string chrom, CHRPOS start, CHRPOS end, string name,
string score, string strand, vector[string] fields)
# methods
string reportBed()
cdef cppclass BedFile:
BedFile(string)
int Open()
void Rewind()
void Seek(unsigned long offset)
void Close()
BED GetNextBed()
void loadBedFileIntoMap()
### "all" ###
# this version doesn't care if the strands match.
vector[BED] FindOverlapsPerBin(BED bed, float overlapFraction)
# if forceStrand is true, require that the strands match,
vector[BED] FindOverlapsPerBin(BED bed, bool forceStrand, float overlapFraction)
### "any" ###
int FindAnyOverlapsPerBin(BED bed, float overlapFraction)
# if forceStrand is true, require that the strands match,
int FindAnyOverlapsPerBin(BED bed, bool forceStrand, float overlapFraction)
### "count" ###
int CountOverlapsPerBin(BED bed, float overlapFraction)
# if forceStrand is true, require that the strands match,
int CountOverlapsPerBin(BED bed, bool forceStrand, float overlapFraction)
string file_type
bint _typeIsKnown
cdef class Interval:
cdef BED *_bed
cdef object _attrs
cpdef append(Interval self, object value)
cpdef deparse_attrs(Interval self)
pybedtools-0.9.0/pybedtools/cbedtools.pyx 0000664 0000000 0000000 00000075767 14173526301 0020640 0 ustar 00root root 0000000 0000000 # distutils: language = c++
# String notes:
#
# Anything that goes in C++ objects should be converted to a C++
# type, using the _cppstr() function. For example: Interval._bed.file_type,
# or the entries in Interval._bed.fields.
#
# Any Python accessor methods (Interval.fields, Interval.__getitem__) should
# then be converted to Python strings using the _pystr() function.
#
# Cython uses the `str` type as whatever the native Python version uses as
# str.
from cpython.version cimport PY_MAJOR_VERSION
from libcpp.string cimport string
# Python byte strings automatically coerce to/from C++ strings.
cdef _cppstr(s):
# Use this to handle incoming strings from Python.
#
# C++ uses bytestrings. PY2 strings need no conversion; bare PY3 strings
# are unicode and so must be encoded to bytestring.
if isinstance(s, int):
s = str(s)
if isinstance(s, unicode):
s = s.encode('UTF-8')
return s
cdef _pystr(string s):
# Use this to prepare a string for sending to Python.
#
# Always returns unicode.
return s.decode('UTF-8', 'strict')
if PY_MAJOR_VERSION < 3:
integer_types = (int, long)
else:
integer_types = (int,)
"""
bedtools.pyx: A Cython wrapper for the BEDTools BedFile class
Authors: Aaron Quinlan[1], Brent Pedersen[2]
Affl: [1] Center for Public Health Genomics, University of Virginia
[2]
Email: aaronquinlan at gmail dot com
"""
from cython.operator cimport dereference as deref
import sys
import six
import subprocess
from collections import defaultdict
cdef dict LOOKUPS = {
"gff": {"chrom": 0, "start": 3, "end": 4, "stop": 4, "strand": 6},
"vcf": {"chrom": 0, "start": 1},
"bed": {"chrom": 0, "start": 1, "end": 2, "stop": 2, "score": 4, "strand": 5}
}
for ktype, kdict in list(LOOKUPS.items()):
for k, v in list(kdict.items()):
kdict[v] = k
# Keys are tuples of start/start, stop/stop, start/stop, stop/start.
# Values are which operators should return True, otherwise False
# < 0 | <= 1 | == 2 | != 3 | > 4 | >= 5
PROFILES_TRUE = {
(0, 0, -1, 1): (2, 1, 5), # a == b, a >= b, a <= b
# a ---------
# b ---------
(-1, -1, -1, -1): (0, 1), # a < b, a <= b
# a ----
# b -----
(-1, -1, -1, 0): (1,), # a <= b
# a ----
# b ----- (book-ended)
(1, 1, 0, 1): (5,), # a >= b
# a -----
# b ---- (book-ended)
(1, 1, 1, 1): (4, 5), # a > b, a >= b
# a ------
# b ----
(0, 1, -1, 1): (5,), # a >= b
# a ------------
# b ---------
(1, 0, -1, 1): (5,), # a >= b
# a -----------
# b -------------
(-1, 0, -1, 1): (1,), # a <= b
# a -------------
# b -----------
(0, -1, -1, 1): (1,), # a <= b
# a ---------
# b ------------
(-1, -1, -1, 1): (1,), # a <= b
# a -----------
# b -----------
(1, 1, -1, 1): (5,), # a >= b
# a -----------
# b -----------
(1, -1, -1, 1): tuple(), # undef
# a ----
# b -----------
(-1, 1, -1, 1): tuple(), # undef
# a -----------
# b ----
(-1, 0, -1, 0): (1,), # a <= b
# a -----------
# b -
(1, 0, 0, 1): (5,), # a >= b
# a -
# b -----------
(0, 0, 0, 0): (1, 2, 5), # a == b, a <= b, a >= b
# a -
# b - (starts and stops are identical for all features)
}
class MalformedBedLineError(Exception):
pass
class BedToolsFileError(Exception):
pass
class Attributes(dict):
"""
Class to map between a dict of attrs and fields[8] of a GFF Interval obj.
"""
def __init__(self, attr_str=""):
attr_str = str(attr_str)
self._attr_str = attr_str
self.sort_keys = False
# in general, GFF files will have either as many '=' as ';'
# (or ';'-1 if there's no trailing ';')
n_semi = attr_str.count(';')
n_eq = attr_str.count('=')
n_quotes = attr_str.count('"')
if n_eq > n_semi - 1:
self.sep, self.field_sep = (';', '=')
else:
self.sep, self.field_sep = (';', ' ')
self._quoted = {}
# TODO: pathological case . . . detect this as GFF:
#
# class_code=" "
#
# and this as GTF:
#
# class_code "="
# quick exit
if attr_str == "":
return
kvs = map(str.strip, attr_str.strip().split(self.sep))
for field, value in [kv.split(self.field_sep, 1) for kv in kvs if kv]:
if value.count('"') == 2:
self._quoted[field] = True
self[field] = value.replace('"', '')
def __str__(self):
# stringify all items first
items = []
for field, val in dict.iteritems(self):
try:
if self._quoted[field]:
val = '"' + str(val) + '"'
except KeyError:
pass
items.append((field, val))
pairs = []
if self.sort_keys:
items.sort()
for k, v in items:
pairs.append(self.field_sep.join([k, v]))
return self.sep.join(pairs) + self.sep
cdef class Interval:
"""
Class to represent a genomic interval.
Constructor::
Interval(chrom, start, end, name=".", score=".", strand=".", otherfields=None)
Class to represent a genomic interval of any format. Requires at least 3
args: chrom (string), start (int), end (int).
`start` is *always* the 0-based start coordinate. If this Interval is to
represent a GFF object (which uses a 1-based coordinate system), then
subtract 1 from the 4th item in the line to get the start position in
0-based coords for this Interval. The 1-based GFF coord will still be
available, albeit as a string, in fields[3].
`otherfields` is a list of fields that don't fit into the other kwargs, and
will be stored in the `fields` attribute of the Interval.
All the items in `otherfields` must be strings for proper conversion to
C++.
By convention, for BED files, `otherfields` is everything past the first 6
items in the line. This allows an Interval to represent composite features
(e.g., a GFF line concatenated to the end of a BED line)
But for other formats (VCF, GFF, SAM), the entire line should be passed in
as a list for `otherfields` so that we can always check the
Interval.file_type and extract the fields we want, knowing that they'll be
in the right order as passed in with `otherfields`.
Example usage:
>>> from pybedtools import Interval
>>> i = Interval("chr1", 22, 44, strand='-')
>>> i
Interval(chr1:22-44)
"""
def __init__(self, chrom, start, end, name=".", score=".", strand=".", otherfields=None):
if otherfields is None:
otherfields = []
otherfields = [_cppstr(i) for i in otherfields]
self._bed = new BED(
_cppstr(chrom), start, end, _cppstr(name), _cppstr(score),
_cppstr(strand), otherfields)
#self._bed.chrom = _cppstr(chrom)
#self._bed.start = start
#self._bed.end = end
#self._bed.name = _cppstr(name)
#self._bed.score = _cppstr(score)
#self._bed.strand = _cppstr(strand)
fields = [_cppstr(chrom), _cppstr(str(start)), _cppstr(str(end)), _cppstr(name), _cppstr(score), _cppstr(strand)]
fields.extend(otherfields)
self._bed.fields = fields
self._attrs = None
def __copy__(self):
return create_interval_from_list(self.fields)
def __hash__(self):
return hash("\t".join(self.fields))
property chrom:
""" the chromosome of the feature"""
def __get__(self):
return _pystr(self._bed.chrom)
def __set__(self, chrom):
chrom = _cppstr(chrom)
self._bed.chrom = chrom
idx = LOOKUPS[self.file_type]["chrom"]
self._bed.fields[idx] = _cppstr(chrom)
# < 0 | <= 1 | == 2 | != 3 | > 4 | >= 5
def __richcmp__(self, other, int op):
if (self.chrom != other.chrom) or (self.strand != other.strand):
if op == 3: return True
return False
def cmp(x, y):
if x < y:
return -1
if x == y:
return 0
if x > y:
return 1
# check all 4 so that we can handle nesting and partial overlaps.
profile = (cmp(self.start, other.start),
cmp(self.stop, other.stop),
cmp(self.start, other.stop),
cmp(self.stop, other.start))
try:
if PROFILES_TRUE[profile] == tuple():
raise NotImplementedError('Features are nested -- comparison undefined')
if op != 3:
if op in PROFILES_TRUE[profile]:
return True
return False
else:
if 2 in PROFILES_TRUE[profile]:
return False
return True
except KeyError:
raise ValueError('Currently unsupported comparison -- please '
'submit a bug report')
property start:
"""The 0-based start of the feature."""
def __get__(self):
return self._bed.start
def __set__(self, int start):
self._bed.start = start
idx = LOOKUPS[self.file_type]["start"]
# Non-BED files should have 1-based coords in fields
if self.file_type != 'bed':
start += 1
self._bed.fields[idx] = _cppstr(str(start))
property end:
"""The end of the feature"""
def __get__(self):
return self._bed.end
def __set__(self, int end):
self._bed.end = end
idx = LOOKUPS[self.file_type]["stop"]
self._bed.fields[idx] = _cppstr(str(end))
property stop:
""" the end of the feature"""
def __get__(self):
return self._bed.end
def __set__(self, int end):
idx = LOOKUPS[self.file_type]["stop"]
self._bed.fields[idx] = _cppstr(str(end))
self._bed.end = end
property strand:
""" the strand of the feature"""
def __get__(self):
return _pystr(self._bed.strand)
def __set__(self, strand):
idx = LOOKUPS[self.file_type]["strand"]
self._bed.fields[idx] = _cppstr(strand)
self._bed.strand = _cppstr(strand)
property length:
""" the length of the feature"""
def __get__(self):
return self._bed.end - self._bed.start
cpdef deparse_attrs(self):
if not self._attrs: return
if self.file_type != "gff":
raise ValueError('Interval.attrs was not None, but this was a non-GFF Interval')
s = self._attrs.__str__()
self._bed.fields[8] = _cppstr(s)
property fields:
def __get__(self):
self.deparse_attrs()
items = []
for i in self._bed.fields:
if isinstance(i, int):
items.append(i)
else:
items.append(_pystr(i))
return items
property attrs:
def __get__(self):
if self._attrs is None:
ft = _pystr(self._bed.file_type)
if ft == 'gff':
self._attrs = Attributes(_pystr(self._bed.fields[8]))
else:
self._attrs = Attributes("")
return self._attrs
def __set__(self, attrs):
self._attrs = attrs
# TODO: make this more robust.
@property
def count(self):
return int(self.fields[-1])
property name:
"""
>>> import pybedtools
>>> vcf = pybedtools.example_bedtool('v.vcf')
>>> [v.name for v in vcf]
['rs6054257', 'chr1:16', 'rs6040355', 'chr1:222', 'microsat1']
"""
def __get__(self):
cdef string ftype = self._bed.file_type
value = None
if ftype == "gff":
"""
# TODO. allow setting a name_key in the BedTool constructor?
if self.name_key and self.name_key in attrs:
return attrs[self.name_key]
"""
for key in ("ID", "Name", "gene_name", "transcript_id", \
"gene_id", "Parent"):
if key in self.attrs:
value = self.attrs[key]
break
elif ftype == "vcf":
s = self.fields[2]
if s in ("", "."):
value = "%s:%i" % (self.chrom, self.start)
else:
value = _pystr(s)
elif ftype == "bed":
value = _pystr(self._bed.name)
return value
def __set__(self, value):
cdef string ftype = self._bed.file_type
if ftype == "gff":
for key in ("ID", "Name", "gene_name", "transcript_id", \
"gene_id", "Parent"):
if not key in self.attrs:
continue
# If it's incoming from Python it's unicode, so store that directly
# in the attributes (since an Attribute object works on
# unicode)...
self.attrs[key] = value
break
# Otherwise use _cppstr() because we're storing it in _bed.fields.
elif ftype == "vcf":
self._bed.fields[2] = _cppstr(value)
else:
self._bed.name = _cppstr(value)
self._bed.fields[3] = _cppstr(value)
property score:
def __get__(self):
return _pystr(self._bed.score)
def __set__(self, value):
value = _cppstr(value)
self._bed.score = value
idx = LOOKUPS[self.file_type]["score"]
self._bed.fields[idx] = value
property file_type:
"bed/vcf/gff"
def __get__(self):
return _pystr(self._bed.file_type)
def __set__(self, value):
self._bed.file_type = _cppstr(value)
# TODO: maybe bed.overlap_start or bed.overlap.start ??
@property
def o_start(self):
return self._bed.o_start
@property
def o_end(self):
return self._bed.o_end
@property
def o_amt(self):
return self._bed.o_end - self._bed.o_start
def __str__(self):
"""
Interval objects always print with a newline to mimic a line in a
BED/GFF/VCF file
"""
items = []
for i in self.fields:
if isinstance(i, int):
i = str(i)
items.append(i)
return '\t'.join(items) + '\n'
def __repr__(self):
return "Interval(%s:%i-%i)" % (self.chrom, self.start, self.end)
def __dealloc__(self):
del self._bed
def __len__(self):
return self._bed.end - self._bed.start
def __getitem__(self, object key):
cdef int i
ftype = _pystr(self._bed.file_type)
self.deparse_attrs()
if isinstance(key, (int, long)):
nfields = self._bed.fields.size()
if key >= nfields:
raise IndexError('field index out of range')
elif key < 0:
key = nfields + key
return _pystr(self._bed.fields.at(key))
elif isinstance(key, slice):
indices = key.indices(self._bed.fields.size())
return [_pystr(self._bed.fields.at(i)) for i in range(*indices)]
elif isinstance(key, str):
if ftype == "gff":
try:
return self.attrs[key]
except KeyError:
pass
# We don't have to convert using _pystr() because the __get__
# methods do that already.
return getattr(self, key)
def __setitem__(self, object key, object value):
if isinstance(key, (int, long)):
nfields = self._bed.fields.size()
if key >= nfields:
raise IndexError('field index out of range')
elif key < 0:
key = nfields + key
self._bed.fields[key] = _cppstr(value)
ft = _pystr(self._bed.file_type)
if key in LOOKUPS[ft]:
setattr(self, LOOKUPS[ft][key], value)
elif isinstance(key, (basestring)):
setattr(self, key, value)
cpdef append(self, object value):
self._bed.fields.push_back(_cppstr(value))
def __nonzero__(self):
return True
cdef Interval create_interval(BED b):
cdef Interval pyb = Interval.__new__(Interval)
pyb._bed = new BED(b.chrom, b.start, b.end, b.name,
b.score, b.strand, b.fields,
b.o_start, b.o_end, b.bedType, b.file_type, b.status)
pyb._bed.fields = b.fields
return pyb
# TODO: optimization: Previously we had (fields[1] + fields[2]).isdigit() when
# checking in create_interval_from_list for filetype heuruistics. Is there
# a performance hit by checking instances?
cdef isdigit(s):
if isinstance(s, integer_types):
return True
return s.isdigit()
cpdef Interval create_interval_from_list(list fields):
"""
Create an Interval object from a list of strings.
Constructor::
create_interval_from_list(fields)
Given the list of strings, `fields`, automatically detects the format (BED,
GFF, VCF, SAM) and creates a new Interval object.
`fields` is a list with an arbitrary number of items (it can be quite long,
say after a -wao intersection of a BED12 and a GFF), however, the first
fields must conform to one of the supported formats. For example, if you
want the resulting Interval to be considered a GFF feature, then the first
9 fields must conform to the GFF format. Similarly, if you want the
resulting Interval to be considered a BED feature, then the first three
fields must be chrom, start, stop.
Example usage:
>>> # Creates a BED3 feature
>>> feature = create_interval_from_list(['chr1', '1', '100'])
"""
# TODO: this function is used a lot, and is doing a bit of work. We should
# have an optimized version that is directly provided the filetype.
cdef Interval pyb = Interval.__new__(Interval)
orig_fields = fields[:]
# BED -- though a VCF will be detected as BED if its 2nd field, id, is a
# digit
# SAM
if (
(len(fields) >= 11)
and isdigit(fields[1])
and isdigit(fields[3])
and isdigit(fields[4])
and (fields[5] not in ['.', '+', '-'])
):
# TODO: what should the stop position be? Here, it's just the start
# plus the length of the sequence, but perhaps this should eventually
# do CIGAR string parsing.
if int(fields[1]) & 0x04:
# handle unmapped reads
chrom = _cppstr("*")
start = 0
stop = 0
else:
chrom = _cppstr(fields[2])
start = int(fields[3]) - 1
stop = int(fields[3]) + len(fields[9]) - 1
name = _cppstr(fields[0])
score = _cppstr(fields[1])
if int(fields[1]) & 0x10:
strand = _cppstr('-')
else:
strand = _cppstr('+')
# Fields is in SAM format
fields[3] = str(start + 1)
pyb._bed = new BED(
chrom,
start,
stop,
strand,
name,
score,
list_to_vector(fields))
pyb.file_type = _cppstr('sam')
elif isdigit(fields[1]) and isdigit(fields[2]):
# if it's too short, just add some empty fields.
if len(fields) < 7:
fields.extend([".".encode('UTF-8')] * (6 - len(fields)))
other_fields = []
else:
other_fields = fields[6:]
pyb._bed = new BED(
_cppstr(fields[0]),
int(fields[1]),
int(fields[2]),
_cppstr(fields[3]),
_cppstr(fields[4]),
_cppstr(fields[5]),
list_to_vector(other_fields))
pyb.file_type = _cppstr('bed')
# VCF
elif isdigit(fields[1]) and not isdigit(fields[3]) and len(fields) >= 8:
pyb._bed = new BED(
_cppstr(fields[0]),
int(fields[1]) - 1,
int(fields[1]),
_cppstr(fields[2]),
_cppstr(fields[5]),
_cppstr('.'),
list_to_vector(fields))
pyb.file_type = b'vcf'
# GFF
elif len(fields) >= 9 and isdigit(fields[3]) and isdigit(fields[4]):
pyb._bed = new BED(
_cppstr(fields[0]),
int(fields[3])-1, int(fields[4]),
_cppstr(fields[2]),
_cppstr(fields[5]),
_cppstr(fields[6]),
list_to_vector(fields[7:]))
pyb.file_type = _cppstr('gff')
else:
raise MalformedBedLineError('Unable to detect format from %s' % fields)
if pyb.start > pyb.end:
raise MalformedBedLineError("Start is greater than stop")
pyb._bed.fields = list_to_vector(orig_fields)
return pyb
cdef vector[string] list_to_vector(list li):
cdef vector[string] s
cdef int i
for i in range(len(li)):
_s = li[i]
s.push_back(_cppstr(_s))
return s
cdef list string_vec2list(vector[string] sv):
cdef size_t size = sv.size(), i
return [_pystr(sv.at(i)) for i in range(size)]
cdef list bed_vec2list(vector[BED] bv):
cdef size_t size = bv.size(), i
cdef list l = []
cdef BED b
for i in range(size):
b = bv.at(i)
l.append(create_interval(b))
return l
def overlap(int s1, int s2, int e1, int e2):
return min(e1, e2) - max(s1, s2)
cdef class IntervalIterator:
cdef object stream
cdef int _itemtype
def __init__(self, stream):
self.stream = stream
# For speed, check int rather than call isinstance().
# -1 is unset, 0 assumes list/tuple/iterable, and 1 is a string.
#
# Also assumes that all items in the iterable `stream` are the same
# type...this seems like a reasonable assumption.
self._itemtype = -1
def __dealloc__(self):
try:
self.stream.close()
except AttributeError:
pass
def __iter__(self):
return self
def __next__(self):
while True:
if hasattr(self.stream, 'closed'):
if self.stream.closed:
raise StopIteration
try:
line = next(self.stream)
except StopIteration:
if hasattr(self.stream, 'close'):
self.stream.close()
raise StopIteration
if self._itemtype < 0:
if isinstance(line, Interval):
self._itemtype = 2
elif isinstance(line, basestring):
self._itemtype = 1
else:
self._itemtype = 0
if self._itemtype == 1:
if line.startswith(('@', '#', 'track', 'browser')) or len(line.strip()) == 0:
continue
break
# Iterable of Interval objects
if self._itemtype == 2:
return line
# Iterable of strings, in which case we need to split
elif self._itemtype == 1:
fields = line.rstrip('\r\n').split('\t')
# Otherwise assume list/tuple/iterable of fields
else:
fields = list(line)
# TODO: optimization: create_interval_from_list should have a version
# that accepts C++ string instances
return create_interval_from_list(fields)
cdef class IntervalFile:
cdef BedFile *intervalFile_ptr
cdef bint _loaded
cdef bint _open
cdef string _fn
"""
An IntervalFile provides low-level access to the BEDTools API.
>>> fn = pybedtools.example_filename('a.bed')
>>> intervalfile = pybedtools.IntervalFile(fn)
"""
def __init__(self, intervalFile):
self.intervalFile_ptr = new BedFile(_cppstr(intervalFile))
self._loaded = 0
self._open = 0
self._fn = _cppstr(intervalFile)
def __dealloc__(self):
del self.intervalFile_ptr
def __iter__(self):
return self
def __next__(self):
if not self._open:
result = self.intervalFile_ptr.Open()
if result == -1:
raise BedToolsFileError("Error opening file")
self._open = 1
cdef BED b = self.intervalFile_ptr.GetNextBed()
if b.status == BED_VALID:
return create_interval(b)
elif b.status == BED_INVALID:
self.intervalFile_ptr.Close()
raise StopIteration
elif b.status == BED_MALFORMED:
self.intervalFile_ptr.Close()
raise MalformedBedLineError("malformed line: %s" % string_vec2list(b.fields))
else:
return next(self)
@property
def fn(self):
return _pystr(self._fn)
@property
def file_type(self):
if not self.intervalFile_ptr._typeIsKnown:
try:
a = six.advance_iterator(iter(self))
file_type = _pystr(self.intervalFile_ptr.file_type)
self.intervalFile_ptr.Close()
return file_type
except MalformedBedLineError:
# If it's a SAM, raise a meaningful exception. If not, fail.
with open(self.fn) as fn:
interval = create_interval_from_list(fn.readline().strip().split())
if interval.file_type == 'sam':
raise ValueError('IntervalFile objects do not yet natively support SAM. '
'Please convert to BED/GFF/VCF first if you want to '
'use the low-level API of IntervalFile')
else:
raise
def loadIntoMap(self):
"""
Prepares file for checking intersections. Used by other methods like all_hits()
"""
if self._loaded:
return
self.intervalFile_ptr.loadBedFileIntoMap()
self._loaded = 1
def rewind(self):
"""
Jump to the beginning of the file.
"""
if not self._open:
self.intervalFile_ptr.Open()
self._open = 1
self.intervalFile_ptr.Rewind()
def seek(self, offset):
"""
Jump to a specific byte offset in the file
"""
if not self._open:
self.intervalFile_ptr.Open()
self._open = 1
self.intervalFile_ptr.Seek(offset)
def all_hits(self, Interval interval, bool same_strand=False, float overlap=0.0):
"""
:Signature: `IntervalFile.all_hits(interval, same_strand=False, overlap=0.0)`
Search for the Interval `interval` this file and return **all**
overlaps as a list.
`same_strand`, if True, will only consider hits on the same strand as `interval`.
`overlap` can be used to specify the fraction of overlap between
`interval` and each feature in the IntervalFile.
Example usage:
>>> fn = pybedtools.example_filename('a.bed')
>>> # create an Interval to query with
>>> i = pybedtools.Interval('chr1', 1, 10000, strand='+')
>>> # Create an IntervalFile out of a.bed
>>> intervalfile = pybedtools.IntervalFile(fn)
>>> # get stranded hits
>>> intervalfile.all_hits(i, same_strand=True)
[Interval(chr1:1-100), Interval(chr1:100-200), Interval(chr1:900-950)]
"""
cdef vector[BED] vec_b
self.loadIntoMap()
if same_strand == False:
vec_b = self.intervalFile_ptr.FindOverlapsPerBin(deref(interval._bed), overlap)
try:
return bed_vec2list(vec_b)
finally:
pass
else:
vec_b = self.intervalFile_ptr.FindOverlapsPerBin(deref(interval._bed), same_strand, overlap)
try:
return bed_vec2list(vec_b)
finally:
pass
# search() is an alias for all_hits
search = all_hits
def any_hits(self, Interval interval, bool same_strand=False, float overlap=0.0):
"""
:Signature: `IntervalFile.any_hits(interval, same_strand=False, overlap=0.0)`
Return 1 if the Interval `interval` had >=1 hit in this IntervalFile, 0 otherwise.
`same_strand`, if True, will only consider hits on the same strand as `interval`.
`overlap` can be used to specify the fraction of overlap between
`interval` and each feature in the IntervalFile.
Example usage:
>>> fn = pybedtools.example_filename('a.bed')
>>> # create an Interval to query with
>>> i = pybedtools.Interval('chr1', 1, 10000, strand='+')
>>> # Create an IntervalFile out of a.bed
>>> intervalfile = pybedtools.IntervalFile(fn)
>>> # any stranded hits?
>>> intervalfile.any_hits(i, same_strand=True)
1
"""
found = 0
self.loadIntoMap()
if same_strand == False:
found = self.intervalFile_ptr.FindAnyOverlapsPerBin(deref(interval._bed), overlap)
else:
found = self.intervalFile_ptr.FindAnyOverlapsPerBin(deref(interval._bed), same_strand, overlap)
return found
def count_hits(self, Interval interval, bool same_strand=False, float overlap=0.0):
"""
:Signature: `IntervalFile.count_hits(interval, same_strand=False, overlap=0.0)`
Return the number of overlaps of the Interval `interval` had with this
IntervalFile.
`same_strand`, if True, will only consider hits on the same strand as
`interval`.
`overlap` can be used to specify the fraction of overlap between
`interval` and each feature in the IntervalFile.
Example usage:
>>> fn = pybedtools.example_filename('a.bed')
>>> # create an Interval to query with
>>> i = pybedtools.Interval('chr1', 1, 10000, strand='+')
>>> # Create an IntervalFile out of a.bed
>>> intervalfile = pybedtools.IntervalFile(fn)
>>> # get number of stranded hits
>>> intervalfile.count_hits(i, same_strand=True)
3
"""
self.loadIntoMap()
if same_strand == False:
return self.intervalFile_ptr.CountOverlapsPerBin(deref(interval._bed), overlap)
else:
return self.intervalFile_ptr.CountOverlapsPerBin(deref(interval._bed), same_strand, overlap)
pybedtools-0.9.0/pybedtools/contrib/ 0000775 0000000 0000000 00000000000 14173526301 0017532 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/pybedtools/contrib/__init__.py 0000664 0000000 0000000 00000000234 14173526301 0021642 0 ustar 00root root 0000000 0000000 from . import bigwig
from . import bigbed
from . import venn_maker
from . import long_range_interaction
from .intersection_matrix import IntersectionMatrix
pybedtools-0.9.0/pybedtools/contrib/bigbed.py 0000664 0000000 0000000 00000004370 14173526301 0021324 0 ustar 00root root 0000000 0000000 import os
import subprocess
import six
import pybedtools
def bigbed(
x,
genome,
output,
blockSize=256,
itemsPerSlot=512,
bedtype=None,
_as=None,
unc=False,
tab=False,
):
"""
Converts a BedTool object to a bigBed format and returns the new filename.
`x` is a BedTool object
`genome` is an assembly string
`output` is the name of the bigBed file to create.
Other args are passed to bedToBigBed. In particular, `bedtype` (which
becomes the "-type=" argument) is automatically handled for you if it is
kept as the default None.
Assumes that a recent version of bedToBigBed from UCSC is on the path.
"""
if isinstance(x, six.string_types):
x = pybedtools.BedTool(x)
if not isinstance(x.fn, six.string_types):
x = x.saveas()
chromsizes = pybedtools.chromsizes_to_file(pybedtools.chromsizes(genome))
if bedtype is None:
bedtype = "bed%s" % x.field_count()
cmds = [
"bedToBigBed",
x.fn,
chromsizes,
output,
"-blockSize=%s" % blockSize,
"-itemsPerSlot=%s" % itemsPerSlot,
"-type=%s" % bedtype,
]
if unc:
cmds.append("-unc")
if tab:
cmds.append("-tab")
if _as:
cmds.append("-as=%s" % _as)
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if p.returncode:
raise ValueError(
"cmds: %s\nstderr:%s\nstdout:%s" % (" ".join(cmds), stderr, stdout)
)
return output
def bigbed_to_bed(fn, chrom=None, start=None, end=None, maxItems=None):
cmds = ["bigBedToBed", fn]
if chrom is not None:
cmds.extend(["-chrom", chrom])
if start is not None:
cmds.extend(["-start", start])
if end is not None:
cmds.extend(["-end", end])
if maxItems is not None:
cmds.extend(["-maxItems", maxItems])
outfn = pybedtools.BedTool._tmp()
cmds.append(outfn)
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if p.returncode:
raise ValueError(
"cmds: %s\nstderr:%s\nstdout:%s" % (" ".join(cmds), stderr, stdout)
)
return pybedtools.BedTool(outfn)
pybedtools-0.9.0/pybedtools/contrib/bigwig.py 0000664 0000000 0000000 00000013760 14173526301 0021363 0 ustar 00root root 0000000 0000000 """
Module to help create scaled bigWig files from BAM
"""
import pybedtools
import os
import subprocess
def mapped_read_count(bam, force=False):
"""
Scale is cached in a bam.scale file containing the number of mapped reads.
Use force=True to override caching.
"""
scale_fn = bam + ".scale"
if os.path.exists(scale_fn) and not force:
for line in open(scale_fn):
if line.startswith("#"):
continue
readcount = float(line.strip())
return readcount
cmds = ["samtools", "view", "-c", "-F", "0x4", bam]
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if p.returncode:
raise ValueError("samtools says: %s" % stderr)
readcount = float(stdout)
# write to file so the next time you need the lib size you can access
# it quickly
if not os.path.exists(scale_fn):
fout = open(scale_fn, "w")
fout.write(str(readcount) + "\n")
fout.close()
return readcount
def bedgraph_to_bigwig(bedgraph, genome, output):
genome_file = pybedtools.chromsizes_to_file(pybedtools.chromsizes(genome))
cmds = ["bedGraphToBigWig", bedgraph.fn, genome_file, output]
try:
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
except FileNotFoundError:
raise FileNotFoundError(
"bedGraphToBigWig was not found on the path. This is an external "
"tool from UCSC which can be downloaded from "
"http://hgdownload.soe.ucsc.edu/admin/exe/. Alternatatively, use "
"`conda install ucsc-bedgraphtobigwig`"
)
if p.returncode:
raise ValueError(
"cmds: %s\nstderr:%s\nstdout:%s" % (" ".join(cmds), stderr, stdout)
)
return output
def bigwig_to_bedgraph(fn, chrom=None, start=None, end=None, udcDir=None):
cmds = ["bigWigToBedGraph", fn]
if chrom is not None:
cmds.extend(["-chrom", chrom])
if start is not None:
cmds.extend(["-start", start])
if end is not None:
cmds.extend(["-end", end])
if udcDir is not None:
cmds.extend(["-udcDir", udcDir])
outfn = pybedtools.BedTool._tmp()
cmds.append(outfn)
try:
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
except FileNotFoundError:
raise FileNotFoundError(
"bigWigToBedGraph was not found on the path. This is an external "
"tool from UCSC which can be downloaded from "
"http://hgdownload.soe.ucsc.edu/admin/exe/. Alternatatively, use "
"`conda install ucsc-bedgraphtobigwig`"
)
if p.returncode:
raise ValueError(
"cmds: %s\nstderr:%s\nstdout:%s" % (" ".join(cmds), stderr, stdout)
)
return pybedtools.BedTool(outfn)
def wig_to_bigwig(wig, genome, output):
genome_file = pybedtools.chromsizes_to_file(pybedtools.chromsizes(genome))
cmds = ["wigToBigWig", wig.fn, genome_file, output]
try:
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
except FileNotFoundError:
raise FileNotFoundError(
"bigWigToBedGraph was not found on the path. This is an external "
"tool from UCSC which can be downloaded from "
"http://hgdownload.soe.ucsc.edu/admin/exe/. Alternatatively, use "
"`conda install ucsc-bedgraphtobigwig`"
)
if p.returncode:
raise ValueError(
"cmds: %s\nstderr:%s\nstdout:%s" % (" ".join(cmds), stderr, stdout)
)
return output
def bam_to_bigwig(bam, genome, output, scale=False):
"""
Given a BAM file `bam` and assembly `genome`, create a bigWig file scaled
such that the values represent scaled reads -- that is, reads per million
mapped reads.
(Disable this scaling step with scale=False; in this case values will
indicate number of reads)
Assumes that `bedGraphToBigWig` from UCSC tools is installed; see
http://genome.ucsc.edu/goldenPath/help/bigWig.html for more details on the
format.
"""
genome_file = pybedtools.chromsizes_to_file(pybedtools.chromsizes(genome))
kwargs = dict(bg=True, split=True, g=genome_file)
if scale:
readcount = mapped_read_count(bam)
_scale = 1 / (readcount / 1e6)
kwargs["scale"] = _scale
x = pybedtools.BedTool(bam).genome_coverage(**kwargs)
cmds = ["bedGraphToBigWig", x.fn, genome_file, output]
try:
p = subprocess.Popen(
cmds,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True,
)
stdout, stderr = p.communicate()
except FileNotFoundError:
raise FileNotFoundError(
"bedGraphToBigWig was not found on the path. This is an external "
"tool from UCSC which can be downloaded from "
"http://hgdownload.soe.ucsc.edu/admin/exe/. Alternatatively, use "
"`conda install ucsc-bedgraphtobigwig`"
)
if p.returncode and "bedSort" in stderr:
print("BAM header was not sorted; sorting bedGraph")
y = x.sort()
cmds[1] = y.fn
try:
p = subprocess.Popen(
cmds,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True,
)
stdout, stderr = p.communicate()
except FileNotFoundError:
raise FileNotFoundError(
"bedSort was not found on the path. This is an external "
"tool from UCSC which can be downloaded from "
"http://hgdownload.soe.ucsc.edu/admin/exe/. Alternatatively, use "
"`conda install ucsc-bedgraphtobigwig`"
)
if p.returncode:
raise ValueError(
"cmds: %s\nstderr: %s\nstdout: %s" % (" ".join(cmds), stderr, stdout)
)
pybedtools-0.9.0/pybedtools/contrib/intersection_matrix.py 0000664 0000000 0000000 00000016613 14173526301 0024205 0 ustar 00root root 0000000 0000000 import os
import sys
import sqlite3
import pybedtools
import time
import collections
def now():
return time.time()
def get_name(fname):
return os.path.splitext(os.path.basename(fname))[0]
class IntersectionMatrix(object):
"""
Class to handle many pairwise comparisons of interval files
"""
def __init__(self, beds, genome, iterations, dbfn=None, force=False):
"""
Class to handle and keep track of many pairwise comparisons of interval
files.
A lightweight database approach is used to minimize computational time.
The database stores filenames and calculation timestamps;
re-calculating a matrix using the same interval files will only
re-calculate values for those files whose modification times are newer
than the timestamp in the database.
`beds` is a list of bed files.
`genome` is the string assembly name, e.g., "hg19" or "dm3".
`dbfn` is the filename of the database you'd like to use to track
what's been completed.
Example usage:
First, get a list of bed files to use:
#>>> beds = [
#... pybedtools.example_filename(i) for i in [
#... 'Cp190_Kc_Bushey_2009.bed',
#... 'CTCF_Kc_Bushey_2009.bed',
#... 'SuHw_Kc_Bushey_2009.bed',
#... 'BEAF_Kc_Bushey_2009.bed'
#... ]]
Set some parameters. "dm3" is the genome to use; info will be stored
in "ex.db". `force=True` means to overwrite what's in the database
#>>> # In practice, you'll want many more iterations...
#>>> im = IntersectionMatrix(beds, 'dm3',
#... dbfn='ex.db', iterations=3, force=True)
#>>> # Use 4 CPUs for randomization
#>>> matrix = im.create_matrix(verbose=True, processes=4)
"""
self.beds = beds
self.genome = genome
self.dbfn = dbfn
self.iterations = iterations
if self.dbfn:
self._init_db(force)
self.conn = sqlite3.connect(dbfn)
self.conn.row_factory = sqlite3.Row
self.c = self.conn.cursor()
def _init_db(self, force=False):
"""
Prepare the database if it doesn't already exist
"""
if self.dbfn is None:
return
if os.path.exists(self.dbfn) and not force:
return
conn = sqlite3.connect(self.dbfn)
c = conn.cursor()
if force:
c.execute("DROP TABLE IF EXISTS intersections;")
c.executescript(
"""
CREATE TABLE intersections (
filea TEXT,
fileb TEXT,
timestamp FLOAT,
actual FLOAT,
median FLOAT,
iterations INT,
self INT,
other INT,
fractionabove FLOAT,
fractionbelow FLOAT,
percentile FLOAT,
PRIMARY KEY (filea, fileb, iterations));
"""
)
conn.commit()
def get_row(self, fa, fb, iterations):
"""
Return the sqlite3.Row from the database corresponding to files `fa`
and `fb`; returns None if not found.
"""
if self.dbfn is None:
return
results = list(
self.c.execute(
"""
SELECT * FROM intersections
WHERE
filea=:fa AND fileb=:fb AND iterations=:iterations
""",
locals(),
)
)
if len(results) == 0:
return
assert len(results) == 1
return results[0]
def done(self, fa, fb, iterations):
"""
Retrieves row from db and only returns True if there's something in
there and the timestamp is newer than the input files.
"""
row = self.get_row(fa, fb, iterations)
if row:
tfa = os.path.getmtime(fa)
tfb = os.path.getmtime(fb)
if (row["timestamp"] > tfa) and (row["timestamp"] > tfb):
return True
return False
def run_and_insert(self, fa, fb, **kwargs):
a = pybedtools.BedTool(fa).set_chromsizes(self.genome)
kwargs["iterations"] = self.iterations
results = a.randomstats(fb, **kwargs)
self.add_row(results)
def add_row(self, results):
"""
Inserts data into db. `results` is a dictionary as returned by
BedTool.randomstats with keys like::
'iterations'
'actual'
'file_a'
'file_b'
self.fn
other.fn
'self'
'other'
'frac randomized above actual'
'frac randomized below actual'
'median randomized'
'normalized'
'percentile'
'lower_%sth' % lower_thresh
'upper_%sth' % upper_thresh
"""
# translate results keys into db-friendly versions
translations = [
("file_a", "filea"),
("file_b", "fileb"),
("median randomized", "median"),
("frac randomized above actual", "fractionabove"),
("frac randomized below actual", "fractionbelow"),
]
for orig, new in translations:
results[new] = results[orig]
results["timestamp"] = now()
sql = """
INSERT OR REPLACE INTO intersections (
filea,
fileb,
timestamp,
actual,
median,
iterations,
self,
other,
fractionabove,
fractionbelow,
percentile)
VALUES (
:filea,
:fileb,
:timestamp,
:actual,
:median,
:iterations,
:self,
:other,
:fractionabove,
:fractionbelow,
:percentile)
"""
self.c.execute(sql, results)
self.conn.commit()
def create_matrix(self, verbose=False, **kwargs):
"""
Matrix (implemented as a dictionary), where the final values are
sqlite3.ROW objects from the database::
{
filea: {
filea: ROW,
fileb: ROW,
...},
fileb: {
filea: ROW,
fileb: ROW,
...},
}
}
"""
nfiles = len(self.beds)
total = nfiles ** 2
i = 0
matrix = collections.defaultdict(dict)
for fa in self.beds:
for fb in self.beds:
i += 1
if verbose:
sys.stderr.write("%(i)s of %(total)s: %(fa)s + %(fb)s\n" % locals())
sys.stderr.flush()
if not self.done(fa, fb, self.iterations):
self.run_and_insert(fa, fb, **kwargs)
matrix[get_name(fa)][get_name(fb)] = self.get_row(
fa, fb, self.iterations
)
return matrix
def print_matrix(self, matrix, key):
"""
Prints a pairwise matrix of values. `matrix` is a dict-of-dicts from
create_matrix(), and `key` is a field name from the database -- one of:
['filea', 'fileb', 'timestamp', 'actual', 'median', 'iterations',
'self', 'other', 'fractionabove', 'fractionbelow', 'percentile']
"""
pybedtools-0.9.0/pybedtools/contrib/long_range_interaction.py 0000664 0000000 0000000 00000040161 14173526301 0024620 0 ustar 00root root 0000000 0000000 import os
import sys
import itertools
import six
import time
import pysam
import pybedtools
def tag_bedpe(bedpe, queries, verbose=False):
"""
Tag each end of a BEDPE with a set of (possibly many) query BED files.
For example, given a BEDPE of interacting fragments from a Hi-C experiment,
identify the contacts between promoters and ChIP-seq peaks. In this case,
promoters and ChIP-seq peaks of interest would be provided as BED files.
The strategy is to split the BEDPE into two separate files. Each file is
intersected independently with the set of queries. The results are then
iterated through in parallel to tie the ends back together. It is this
iterator that is returned (see example below).
Parameters
----------
bedpe : str
BEDPE-format file. Must be name-sorted.
queries : dict
Dictionary of BED/GFF/GTF/VCF files to use. After splitting the BEDPE,
these query files (values in the dictionary) will be passed as the `-b`
arg to `bedtools intersect`. The keys are passed as the `names`
argument for `bedtools intersect`
*Features in each file must have unique names*. Use
:func:`pybedtools.featurefuncs.UniqueID` to help fix this.
*Each file must be BED3 to BED6*.
Returns
-------
Tuple of (iterator, n, extra).
`iterator` is described below. `n` is the total number of lines in the
BEDPE file, which is useful for calculating percentage complete for
downstream work. `extra` is the number of extra fields found in the BEDPE
(also useful for downstream processing).
`iterator` yields tuples of (label, end1_hits, end2_hits) where `label` is
the name field of one line of the original BEDPE file. `end1_hits` and
`end2_hits` are each iterators of BED-like lines representing all
identified intersections across all query BED files for end1 and end2 for
this pair.
Recall that BEDPE format defines a single name and a single score for each
pair. For each item in `end1_hits`, the fields are::
chrom1
start1
end1
name
score
strand1
[extra fields]
query_label
fields_from_query_intersecting_end1
where `[extra fields]` are any additional fields from the original BEDPE,
`query_label` is one of the keys in the `beds` input dictionary, and the
remaining fields in the line are the intersecting line from the
corresponding BED file in the `beds` input dictionary.
Similarly, each item in `end2_hits` consists of:
chrom2
start2
end2
name
score
strand2
[extra fields]
query_label
fields_from_query_intersecting_end2
At least one line is reported for every line in the BEDPE file. If there
was no intersection, the standard BEDTools null fields will be shown. In
`end1_hits` and `end2_hits`, a line will be reported for each hit in each
query.
Example
-------
Consider the following BEDPE (where "x1" is an aribtrary extra field).
>>> bedpe = pybedtools.example_bedtool('test_bedpe.bed')
>>> print(bedpe) # doctest: +NORMALIZE_WHITESPACE
chr1 1 10 chr1 50 90 pair1 5 + - x1
chr1 2 15 chr1 200 210 pair2 1 + + y1
And the following transcription start sites (TSSes) in BED4 format:
>>> tsses = pybedtools.example_bedtool('test_tsses.bed')
>>> print(tsses) # doctest: +NORMALIZE_WHITESPACE
chr1 5 6 gene1
chr1 60 61 gene2
chr1 88 89 gene3
And the following called peaks as BED6:
>>> peaks = pybedtools.example_bedtool('test_peaks.bed')
>>> print(peaks) # doctest: +NORMALIZE_WHITESPACE
chr1 3 4 peak1 50 .
Then we can get the following iterator, n, and extra. Note that the
OrderedDict is only for testing to ensure output is always consistend; in
practice a regular dictionary is fine:
>>> from pybedtools.contrib.long_range_interaction import tag_bedpe
>>> from collections import OrderedDict
>>> queries = OrderedDict()
>>> queries['tss'] = tsses
>>> queries['pk'] = peaks
>>> iterator, n, extra = tag_bedpe(bedpe, queries)
>>> print(n)
2
>>> print(extra)
1
The following illustrates that each item in the iterator represents one
pair, and each item in each group represents an intersection with one end.
Note that the sorting is necessary only for the doctests to be output in
consistent format; this not typically needed:
>>> for (label, end1_hits, end2_hits) in iterator:
... end1_hits = sorted(end1_hits, key=lambda x: str(x))
... end2_hits = sorted(end2_hits, key=lambda x: str(x))
... print('PAIR = {}'.format(label))
... print('end1_hits:')
... for i in end1_hits:
... print(i, end='')
... print('end2_hits:')
... for i in end2_hits:
... print(i, end='') # doctest: +NORMALIZE_WHITESPACE
PAIR = pair1
end1_hits:
chr1 1 10 pair1 5 + x1 pk chr1 3 4 peak1 50 . 1
chr1 1 10 pair1 5 + x1 tss chr1 5 6 gene1 1
end2_hits:
chr1 50 90 pair1 5 - x1 tss chr1 60 61 gene2 1
chr1 50 90 pair1 5 - x1 tss chr1 88 89 gene3 1
PAIR = pair2
end1_hits:
chr1 2 15 pair2 1 + y1 pk chr1 3 4 peak1 50 . 1
chr1 2 15 pair2 1 + y1 tss chr1 5 6 gene1 1
end2_hits:
chr1 200 210 pair2 1 + y1 . . -1 -1 . 0
See the `cis_trans_interactions()` function for one way of summarizing
these data.
"""
b = pybedtools.BedTool(bedpe)
# Figure out if the supplied bedpe had any extra fields. If so, the fields
# are repeated in each of the split output files.
observed = b.field_count()
extra = observed - 10
extra_inds = [10 + i for i in range(extra)]
end1_fn = pybedtools.BedTool._tmp()
end2_fn = pybedtools.BedTool._tmp()
# Performance notes:
# We don't need the overhead of converting every line into
# a pybedtools.Interval object just so we can grab the fields. Doing so
# takes 3.5x more time than simply splitting each line on a tab.
if verbose:
print("splitting BEDPE into separate files.")
print("end1 is going to %s" % end1_fn)
print("end2 is going to %s" % end2_fn)
n = 0
with open(end1_fn, "w") as end1_out, open(end2_fn, "w") as end2_out:
for line in open(b.fn):
n += 1
f = line.strip().split("\t")
end1_out.write(
"\t".join((f[i] for i in [0, 1, 2, 6, 7, 8] + extra_inds)) + "\n"
)
end2_out.write(
"\t".join((f[i] for i in [3, 4, 5, 6, 7, 9] + extra_inds)) + "\n"
)
# Performance notes:
#
# For small BEDPE and large set of query files, it would be faster to sort
# these independently, intersect with sorted=True, and then re-sort by name
# for the grouping. For large BEDPE, I don't think the sorted=True
# performance gain outweighs the hit from sorting twice.
#
# On the other hand, if BEDPE was coord-sorted in the first place, only
# end2 would need to be sorted and re-sorted. On the other (third!?) hand,
# BEDPE creation from BAM implies name-sorting, so it's probably not
# reasonable to assume coord-sorted.
#
# In the end: don't do any sorting.
end1_bt = pybedtools.BedTool(end1_fn)
end2_bt = pybedtools.BedTool(end2_fn)
names, fns = [], []
for name, fn in queries.items():
names.append(name)
if isinstance(fn, pybedtools.BedTool):
fns.append(fn.fn)
else:
fns.append(fn)
if verbose:
print("intersecting end 1")
end1_hits = end1_bt.intersect(list(fns), names=names, wao=True)
if verbose:
print("intersecting end 2")
end2_hits = end2_bt.intersect(list(fns), names=names, wao=True)
if verbose:
print("intersection with end1 is in %s" % (end1_hits.fn))
print("intersection with end2 is in %s" % (end2_hits.fn))
grouped_end1 = itertools.groupby(end1_hits, lambda f: f[3])
grouped_end2 = itertools.groupby(end2_hits, lambda f: f[3])
def gen():
for (label1, group1), (label2, group2) in six.moves.zip(
grouped_end1, grouped_end2
):
assert label1 == label2
yield label1, group1, group2
return gen(), n, extra
def cis_trans_interactions(iterator, n, extra, verbose=True):
"""
Converts the output from `tag_bedpe` into a pandas DataFrame containing
information about regions that contact each other in cis (same fragment) or
trans (different fragments).
For example, given a BEDPE file representing 3D interactions in the genome,
we want to identify which transcription start sites are connected to distal
regions containing a peak.
>>> bedpe = pybedtools.example_bedtool('test_bedpe.bed')
>>> print(bedpe) # doctest: +NORMALIZE_WHITESPACE
chr1 1 10 chr1 50 90 pair1 5 + - x1
chr1 2 15 chr1 200 210 pair2 1 + + y1
>>> tsses = pybedtools.example_bedtool('test_tsses.bed')
>>> print(tsses) # doctest: +NORMALIZE_WHITESPACE
chr1 5 6 gene1
chr1 60 61 gene2
chr1 88 89 gene3
>>> peaks = pybedtools.example_bedtool('test_peaks.bed')
>>> print(peaks) # doctest: +NORMALIZE_WHITESPACE
chr1 3 4 peak1 50 .
Here's what the tracks look like. Note that pair1 is evidence of
a gene1-gene2 interaction and a gene1-gene3 interaction::
TRACKS:
1 2 / 5 6 / 8 9 / 20
0123456789012345678901 / 2345678901234567890123 / 012345678901234 / 0123456789
pair1 |||||||||------------ / --------|||||||||||||| / ||||||||||||||| /
pair2 |||||||||||||------- / ---------------------- / --------------- / ||||||||||
tsses 1 / 2 / 3
peaks 1
>>> from collections import OrderedDict
>>> queries = OrderedDict()
>>> queries['tss'] = tsses
>>> queries['pk'] = peaks
>>> iterator, n, extra = tag_bedpe(bedpe, queries)
>>> for (label, group1, group2) in iterator:
... group1 = sorted(group1, key=lambda x: str(x))
... group2 = sorted(group2, key=lambda x: str(x))
... for i in group1:
... print(i, end='') # doctest: +NORMALIZE_WHITESPACE
... for i in group2:
... print(i, end='') # doctest: +NORMALIZE_WHITESPACE
chr1 1 10 pair1 5 + x1 pk chr1 3 4 peak1 50 . 1
chr1 1 10 pair1 5 + x1 tss chr1 5 6 gene1 1
chr1 50 90 pair1 5 - x1 tss chr1 60 61 gene2 1
chr1 50 90 pair1 5 - x1 tss chr1 88 89 gene3 1
chr1 2 15 pair2 1 + y1 pk chr1 3 4 peak1 50 . 1
chr1 2 15 pair2 1 + y1 tss chr1 5 6 gene1 1
chr1 200 210 pair2 1 + y1 . . -1 -1 . 0
Now we run the same thing, but now aggregate it. Note that each piece of
interaction evidence has its own line. The first line shows that pair1 has
gene1 and peak1 in the same fragment, and that they are connected to gene2.
The second line shows again that gene1 and peak1 are in the same fragmet
and that they are also connected to gene3:
>>> import pandas; pandas.set_option('display.max_columns', 10)
>>> iterator, n, extra = tag_bedpe(bedpe, {'tss': tsses, 'pk': peaks})
>>> df = cis_trans_interactions(iterator, n, extra)
>>> print(df.sort_values(list(df.columns)).reset_index(drop=True))
target_label target_name cis_label cis_name distal_label distal_name label
0 pk peak1 tss gene1 . . pair2
1 pk peak1 tss gene1 tss gene2 pair1
2 pk peak1 tss gene1 tss gene3 pair1
3 tss gene1 pk peak1 . . pair2
4 tss gene1 pk peak1 tss gene2 pair1
5 tss gene1 pk peak1 tss gene3 pair1
6 tss gene2 tss gene3 pk peak1 pair1
7 tss gene2 tss gene3 tss gene1 pair1
8 tss gene3 tss gene2 pk peak1 pair1
9 tss gene3 tss gene2 tss gene1 pair1
If we only care about genes:
>>> print((df[df.target_label == 'tss']).sort_values(list(df.columns)).reset_index(drop=True))
target_label target_name cis_label cis_name distal_label distal_name label
0 tss gene1 pk peak1 . . pair2
1 tss gene1 pk peak1 tss gene2 pair1
2 tss gene1 pk peak1 tss gene3 pair1
3 tss gene2 tss gene3 pk peak1 pair1
4 tss gene2 tss gene3 tss gene1 pair1
5 tss gene3 tss gene2 pk peak1 pair1
6 tss gene3 tss gene2 tss gene1 pair1
Note that in pair2, there is no evidence of interaction between gene1 and
gene2.
What interacts distally with gene2's TSS?
>>> assert set(df.loc[df.target_name == 'gene2', 'distal_name']).difference('.') == set([u'gene1', u'peak1'])
"""
try:
import pandas
except ImportError:
raise ImportError("pandas must be installed to use this function")
c = 0
lines = []
for label, end1_hits, end2_hits in iterator:
c += 1
if c % 1000 == 0:
print("%d (%.1f%%)\r" % (c, c / float(n) * 100), end="")
sys.stdout.flush()
# end1_hits has the full lines of all intersections with end1
end1_hits = list(end1_hits)
end2_hits = list(end2_hits)
def get_name_hits(f):
"""
Returns the key (from which file the interval came) and the name
(of the individual feature).
"""
# this is the "name" reported if there was no hit.
if f[6 + extra] == ".":
return (".", ".")
interval = pybedtools.create_interval_from_list(f[7 + extra :])
return [f[6 + extra], interval.name]
names1 = set(six.moves.map(tuple, six.moves.map(get_name_hits, end1_hits)))
names2 = set(six.moves.map(tuple, six.moves.map(get_name_hits, end2_hits)))
for cis, others in [(names1, names2), (names2, names1)]:
for target in cis:
if target == (".", "."):
continue
non_targets = set(cis).difference([target])
if len(non_targets) == 0:
non_targets = [(".", ".")]
for non_target in non_targets:
for other in others:
line = []
line.extend(target)
line.extend(non_target)
line.extend(other)
line.append(label)
lines.append(line)
df = pandas.DataFrame(
lines,
columns=[
"target_label",
"target_name",
"cis_label",
"cis_name",
"distal_label",
"distal_name",
"label",
],
)
df = df.drop_duplicates()
return df
pybedtools-0.9.0/pybedtools/contrib/plotting.py 0000664 0000000 0000000 00000046564 14173526301 0021763 0 ustar 00root root 0000000 0000000 import os
from collections import defaultdict
import matplotlib
from matplotlib import collections
from matplotlib import pyplot as plt
import numpy as np
import pybedtools
import six
class Track(collections.PolyCollection):
def __init__(
self,
features,
chrom=None,
ybase=0,
yheight=1,
visibility="dense",
stranded=True,
**kwargs
):
"""
Subclass of matplotlib's PolyCollection that can be added to an Axes.
:param features:
Can be an existing BedTool, or anything than can be used to create
a BedTool (e.g., a filename or a generator of Interval objects)
:param ybase:
y-coord of the bottom edge of the track (in data coordinates)
:param yheight:
How high each feature will be, in data coordinates
:param visibility:
Mimics the settings in the UCSC Genome Browser:
* "dense" is the default; overlapping features can be seen if you
set alpha < 1.
* "squish" prevents adjacent features from overlapping. This keeps
`yheight` for all features, so if you have a lot of features
piling up, the track will be a lot higher on the y-axis than
`yheight`.
:param stranded:
If boolean and True, will draw arrrow-shaped features to indicate
direction (where the point is 10% of the total gene length)
If a dictionary, map strands to colors, e.g., {'+': 'r', '-': 'b'}.
:param kwargs:
Additional keyword args are passed to
matplotlib.collections.PolyCollection.
Notes:
After creating a track, use the `ymax` attribute to get the max y-value
used in the track -- useful if you've created a "squish" track but
would like to stack another track on top, and need to calculate what
the new Track's `ybase` should be.
The returned PolyCollection will have the `features` attribute, which
contains the BedTool it was created from -- so you can write callback
functions for event handling, e.g.::
def callback(event):
'''
prints the feature's line when clicked in the plot
'''
coll = event.artist
for i in event.ind:
print coll.features[i]
fig.canvas.mpl_connect('on_pick', callback)
>>> a = pybedtools.example_bedtool('a.bed')
>>> track = pybedtools.contrib.plotting.Track(a, alpha=0.5, picker=5)
>>> import matplotlib.pyplot as plt
>>> fig = plt.figure()
>>> ax = fig.add_subplot(111)
>>> ax.add_collection(track) #doctest: +ELLIPSIS
>>> limits = ax.axis('tight')
"""
if isinstance(features, pybedtools.BedTool) and isinstance(
features.fn, six.string_types
):
self.features = features
else:
self.features = pybedtools.BedTool(features).saveas()
self._visibility = visibility
self._ybase = ybase
self._yheight = yheight
self.stranded = stranded
self._check_stranded_dict()
facecolors = self._colors()
kwargs.update(dict(facecolors=facecolors))
collections.PolyCollection.__init__(self, verts=self._get_verts(), **kwargs)
def _shape(self, feature, ybase, yheight):
if self.stranded and not isinstance(self.stranded, dict):
offset = len(feature) * 0.1
if feature.strand == "-":
return [
(feature.stop, ybase),
(feature.stop, ybase + yheight),
(feature.start + offset, ybase + yheight),
(feature.start, ybase + yheight * 0.5),
(feature.start + offset, ybase),
]
elif feature.strand == "+":
return [
(feature.start, ybase),
(feature.start, ybase + yheight),
(feature.stop - offset, ybase + yheight),
(feature.stop, ybase + yheight * 0.5),
(feature.stop - offset, ybase),
]
return [
(feature.start, ybase),
(feature.start, ybase + yheight),
(feature.stop, ybase + yheight),
(feature.stop, ybase),
]
def _get_verts(self):
verts = []
if self._visibility == "dense":
for feature in self.features:
verts.append(self._shape(feature, self._ybase, self._yheight))
self.ymax = self._ybase + self._yheight
if self._visibility == "squish":
# Using "squish" mode will create multiple "strata" of features.
# The stack keeps track of the end coord of the longest feature in
# each strata
#
# Reasonably efficient -- <2s to plot 15K multiply-overlapping
# features
stack = []
ybase = self._ybase
self.ymax = self._ybase + self._yheight
for feature in self.features:
ybase = None
for i, s in enumerate(stack):
if feature.start > s:
ybase = self._ybase + i * self._yheight
stack[i] = feature.stop
break
if ybase is None:
ybase = self._ybase + len(stack) * self._yheight
stack.append(feature.end)
verts.append(self._shape(feature, ybase, self._yheight))
self.ymax = self._ybase + len(stack) * self._yheight
return verts
def _check_stranded_dict(self):
if not isinstance(self.stranded, dict):
return True
if "+" not in self.stranded:
raise ValueError(
'stranded dict "%s" does not have required ' 'key "+"' % self.stranded
)
if "-" not in self.stranded:
raise ValueError(
'stranded dict "%s" does not have required ' 'key "-"' % self.stranded
)
return True
def _colors(self):
if not isinstance(self.stranded, dict):
return None
colors = []
for feature in self.features:
try:
colors.append(self.stranded[feature.strand])
except KeyError:
raise KeyError(
'strand color dict "%s" does not have a key '
'for strand "%s"' % (self.stranded, feature.strand)
)
return colors
def get_xlims(self, ax):
"""
Needs `ax` to convert to transData coords
"""
bb = self.get_datalim(ax.transData)
return (bb.xmin, bb.xmax)
@property
def midpoint(self):
return self._ybase + (self.ymax - self._ybase) / 2.0
class BinaryHeatmap(object):
"""
Class-based version of the `binary_heatmap` function for more flexibility.
"""
def __init__(self, bts, names):
self.bts = bts
self.names = names
# Be flexible about input types
_bts = []
for bt in bts:
if isinstance(bt, pybedtools.BedTool):
if not isinstance(bt.fn, six.string_types):
bt = bt.saveas()
_bts.append(bt.fn)
elif isinstance(bt, six.string_types):
_bts.append(bt)
# Do the multi-intersection.
self.results = pybedtools.BedTool().multi_intersect(
i=_bts, names=names, cluster=True
)
# If 4 files were provided with labels 'a', 'b', 'c', and 'd, each line
# would look something like:
#
# chr2L 65716 65765 4 a,b,c,d 1 1 1 1
# chr2L 71986 72326 1 c 0 0 1 0
#
# The last four columns will become the matrix; save the class labels (5th
# column) for a printed out report
self.class_counts = defaultdict(int)
_classified_intervals = defaultdict(list)
self.matrix = []
for item in self.results:
cls = item[4]
self.class_counts[cls] += 1
self.matrix.append(item[5:])
_classified_intervals[cls].append(item)
self.classified_intervals = {}
for k, v in list(_classified_intervals.items()):
self.classified_intervals[k] = pybedtools.BedTool(v)
self.matrix = np.array(self.matrix, dtype=int)
self.sort_ind = sort_binary_matrix(self.matrix)
def plot(self, ax=None):
if ax is None:
fig = plt.figure(figsize=(3, 10))
ax = fig.add_subplot(111)
# matplotlib.cm.binary: 1 = black, 0 = white; force origin='upper' so
# that array's [0,0] is in the upper left corner.
mappable = ax.imshow(
self.matrix[self.sort_ind],
aspect="auto",
interpolation="nearest",
cmap=matplotlib.cm.binary,
origin="upper",
)
ax.set_xticks(list(range(len(self.names))))
ax.set_xticklabels(self.names, rotation=90)
if ax is None:
fig.subplots_adjust(left=0.25)
return ax
def binary_heatmap(bts, names, plot=True, cluster=True):
"""
Plots a "binary heatmap", showing the results of a multi-intersection.
Each row is a different genomic region found in at least one of the input
BedTools; each column represents a different file. Black indicates whether
a feature was found at that particular site. Rows with black all the way
across indicates that all features were colocalized at those sites.
`bts` is an iterable of BedTool objects or filenames; `names` is a list of
labels to use in the plot and is exactly the same length as `bts`.
If `plot=True`, then plot the sorted, labeled matrix with matplotlib.
Returns (summary, m) where `summary` is a dictionary summarizing the
results and `m` is the sorted NumPy array. See source for further details.
"""
bh = BinaryHeatmap(bts=bts, names=names)
if plot:
bh.plot()
return bh.class_counts, bh.matrix
def sort_binary_matrix(m):
"""
Performs a column-weighted sort on a binary matrix, returning the new index
"""
# To impart some order in the matrix, give columns increasingly higher
# weights...
weights = [2 ** i for i in range(1, m.shape[1] + 1)[::-1]]
# ...then create scores...
score_mat = m * weights
# ...and re-sort the matrix based on row sums (reversed so that highest
# scores are on top)
ind = np.argsort(score_mat.sum(axis=1))[::-1]
return ind
def binary_summary(d):
"""
Convenience function useful printing the results from binary_heatmap().
"""
s = []
for item in sorted(list(d.items()), key=lambda x: x[1], reverse=True):
s.append("%s : %s" % (item))
return "\n".join(s)
class TrackCollection(object):
def __init__(self, config, yheight=1, figsize=None, padding=0.1):
"""
Handles multiple tracks on the same figure.
:param config:
A list of tuples that configures tracks.
Each tuple contains a filename, BedTool object, or other
iterable of pybedtools.Interval objects and a dictionary of
keyword args that will be used to create a corresponding Track
object, e.g.::
[
('a.bed',
dict(color='r', alpha=0.5, label='a')),
(BedTool('a.bed').intersect('b.bed'),
dict(color='g', label='b')),
]
In this dictionary, do not specify `ybase`, since that will be
handled for you. Also do not specify `yheight` in these
dictionaries -- `yheight` should be provided as a separate kwarg to
so that the `padding` kwarg works correctly.
:param figsize:
Figure size tuple of (width, height), in inches.
:param padding:
Amount of padding to place in between tracks, as a fraction of
`yheight`
"""
self.config = config
self.figsize = figsize
self.yheight = yheight
self.padding = padding
for features, kwargs in self.config:
if "ybase" in kwargs:
raise ValueError(
'Please do not specify "ybase"; this '
"is handled automatically by the %s class" % self.__class__.__name__
)
if "yheight" in kwargs:
raise ValueError(
'Please do not specify "yheight", '
"this should be a separate arg to the %s "
"constructor" % self.__class__.__name__
)
def plot(self, ax=None):
"""
If `ax` is None, create a new figure. Otherwise, plot on `ax`.
Iterates through the configuration, plotting each BedTool-like object
as a separate track.
"""
if ax is None:
fig = plt.figure(figsize=self.figsize)
ax = fig.add_subplot(111)
yticks = []
yticklabels = []
ybase = 0
i = 0
padding = self.yheight * self.padding
# Reverse config because incremental Track plotting works from bottom
# up; this plots user-provided tracks in order from top down
for features, kwargs in self.config[::-1]:
t = Track(features, yheight=self.yheight, ybase=ybase, **kwargs)
ybase = t.ymax + padding
ax.add_collection(t)
if "label" in kwargs:
yticklabels.append(kwargs["label"])
else:
yticklabels.append(str(i))
i += 1
yticks.append(t.midpoint)
ax.set_yticks(yticks)
ax.set_yticklabels(yticklabels)
ax.axis("tight")
return ax
class BedToolsDemo(TrackCollection):
def __init__(
self,
config,
method,
data_path=None,
result_kwargs=None,
method_kwargs=None,
title_kwargs=None,
new_style=True,
subplots_adjust=None,
*args,
**kwargs
):
"""
Class to handle BEDTools demos in a way that maintains flexibility.
If the `config` list contains only one item, assume the method is one
of the "-i" tools that only operate on one file.
If the `config` list contains two items, then use the first as "-a" and
the second as "-b".
:param config:
Either a list of (filename, options) tuples -- see docstring for
TrackCollection for more info.
:param method:
Method of `BedTool` object to use, e.g., 'intersect'
:param data_path:
If not None, this path will be prepended to the files listed in
`config`
:param result_kwargs:
Configuration for the results track. This isn't added to the
config list because the results haven't been created yet...
:param method_kwargs:
Keyword argument that are passed to the method, e.g., `u=True`
:param title_kwargs:
Keyword args for plot title (the text itself will come from the
command that was run; this is for things like font size)
:param new_style:
Edit commands so that they use the "new style" BEDTools calls
("bedtools intersect" rather than "intersectBed")
:param subplots_adjust:
Additional kwargs sent to the figure's subplots_adjust() method,
e.g., `dict(top=0.7)`
:param args:
Addtional arguments sent to TrackCollection
:param kwargs:
Additional keyword arguments sent to TrackCollection
"""
if method_kwargs is None:
method_kwargs = {}
if result_kwargs is None:
result_kwargs = {}
if title_kwargs is None:
title_kwargs = {}
self.title_kwargs = title_kwargs
self.new_style = new_style
self.subplots_adjust = subplots_adjust
# convert lists to tuples, cause we're going to edit the paths
config = [list(i) for i in config]
if data_path:
for conf in config:
if not isinstance(conf[0], six.string_types):
raise ValueError(
"data_path was specified, so you need "
"filenames in the config"
)
conf[0] = os.path.join(data_path, conf[0])
bt1 = pybedtools.BedTool(config[0][0])
method = getattr(bt1, method)
if len(config) == 2:
result = method(config[1][0], **method_kwargs)
elif len(config) == 1:
result = method(**method_kwargs)
else:
raise ValueError(
"`config` must have length 1 (for '-i' tools) or "
"length 2 (for '-a -b' tools)."
)
config.append((result, result_kwargs))
self.result = result
super(BedToolsDemo, self).__init__(config, *args, **kwargs)
def plot(self, ax=None):
ax = super(BedToolsDemo, self).plot(ax)
cmds = self.result._cmds[:]
if self.new_style:
cmds[0] = (
"bedtools %s"
% pybedtools.settings._prog_names[os.path.basename(cmds[0])]
)
ax.set_title(" ".join([os.path.basename(i) for i in cmds]), **self.title_kwargs)
if self.subplots_adjust:
ax.figure.subplots_adjust(**self.subplots_adjust)
return ax
class ConfiguredBedToolsDemo(BedToolsDemo):
def __init__(self, yaml_config, method, method_kwargs, **kwargs):
"""
Wrapper around BedToolsDemo class that reads in a YAML config file.
Useful for using the same "style" configuration many times.
Contents of `yaml_config` must be YAML versions of BedToolsDemo args
and kwargs **except** `method` and `method_kwargs`.
"""
import yaml
conf = yaml.load(open(yaml_config))
disallowed = ["method", "method_kwargs"]
for dis in disallowed:
if dis in conf:
raise ValueError("'%s' cannot be provided in the YAML config" % dis)
conf["method"] = method
conf["method_kwargs"] = method_kwargs
conf.update(kwargs)
super(ConfiguredBedToolsDemo, self).__init__(**conf)
if __name__ == "__main__":
"""
bts = [
pybedtools.example_bedtool('BEAF_Kc_Bushey_2009.bed'),
pybedtools.example_bedtool('CTCF_Kc_Bushey_2009.bed'),
pybedtools.example_bedtool('Cp190_Kc_Bushey_2009.bed'),
pybedtools.example_bedtool('SuHw_Kc_Bushey_2009.bed'),
]
names = ['BEAF', 'CTCF', 'Cp190', 'Su(Hw)']
#bts = [
# pybedtools.example_bedtool('a.bed'),
# pybedtools.example_bedtool('b.bed')]
#names = ['a','b']
d, m = binary_heatmap(bts, names)
print binary_summary(d)
"""
conf_file = pybedtools.example_filename("democonfig.yaml")
data_path = pybedtools.example_filename("") # dir name
ax1 = ConfiguredBedToolsDemo(
conf_file, method="intersect", method_kwargs={}, data_path=data_path
).plot()
ax2 = ConfiguredBedToolsDemo(
conf_file, method="intersect", method_kwargs=dict(u=True), data_path=data_path
).plot()
plt.show()
pybedtools-0.9.0/pybedtools/contrib/venn_maker.py 0000664 0000000 0000000 00000016706 14173526301 0022243 0 ustar 00root root 0000000 0000000 """
Interface between pybedtools and the R package VennDiagram.
Rather than depend on the user to have rpy2 installed, this simply writes an
R script that can be edited and tweaked by the user before being run in R.
"""
import os
import string
import pybedtools
import six
from pybedtools import helpers
import subprocess
from collections import OrderedDict
# really just fill in x and filename...leave the rest up to the user.
#
# Note that the closing parentheses is missing -- that's so the user can add
# kwargs from the calling function
template = string.Template(
"""
library(VennDiagram)
venn.diagram(
x=$x,
filename=$filename,
category.names = $names
"""
)
def _list_to_R_syntax(x):
"""
Convert items in `x` to a string, and replace tabs with pipes in Interval
string representations. Put everything into an R vector and return as one
big string.
"""
items = []
for i in x:
if isinstance(i, pybedtools.Interval):
i = str(i).replace("\t", "|")
items.append('"%s"' % i)
return "c(%s)" % ",".join(items)
def _dict_to_R_named_list(d):
"""
Calls _list_to_R_syntax for each item. Returns one big string.
"""
items = []
for key, val in list(d.items()):
items.append('"%s" = %s' % (key, _list_to_R_syntax(val)))
return "list(%s)" % ", ".join(items)
def truncator(feature):
"""
Convert a feature of any format into a BED3 format.
"""
return pybedtools.create_interval_from_list(
[feature.chrom, str(feature.start), str(feature.stop)]
)
def cleaned_intersect(items):
"""
Perform interval intersections such that the end products have identical \
features for overlapping intervals.
The VennDiagram package does *set* intersection, not *interval*
intersection. So the goal here is to represent intersecting intervals as
intersecting sets of strings.
Doing a simple BEDTools intersectBed call doesn't do the trick (even with
the -u argument). As a concrete example, what would the string be for an
intersection of the feature "chr1:1-100" in file `x` and "chr1:50-200" in
file `y`?
The method used here is to substitute the intervals in `y` that overlap `x`
with the corresponding elements in `x`. This means that in the resulting
sets, the overlapping features are identical. To follow up with the
example, both `x` and `y` would have an item "chr1:50-200" in their sets,
simply indicating *that* one interval overlapped.
Venn diagrams are not well suited for nested overlaps or multi-overlaps.
To illustrate, try drawing the 2-way Venn diagram of the following two
files. Specifically, what number goes in the middle -- the number of
features in `x` that intersect `y` (1) or the number of features in `y`
that intersect `x` (2)?::
x:
chr1 1 100
chr1 500 6000
y:
chr1 50 100
chr1 80 200
chr9 777 888
In this case, this function will return the following sets::
x:
chr1:1-100
chr1:500-6000
y:
chr1:1-100
chr9:777-888
This means that while `x` does not change in length, `y` can. For example,
if there are 2 features in `x` that overlap one feature in `y`, then `y`
will gain those two features in place of its single original feature.
This strategy is extended for multiple intersections -- see the source for
details.
"""
if len(items) == 2:
x = items[0].each(truncator).saveas()
y = items[1].each(truncator).saveas()
# Combine the unique-to-y intervals with the shared-with-x intervals.
# Since x is first in x+y, resulting features are from x.
new_y = (y - x).cat(x + y)
return x, new_y
if len(items) == 3:
x = items[0].each(truncator).saveas()
y = items[1].each(truncator).saveas()
z = items[2].each(truncator).saveas()
# Same as above. Don't care about z yet; this means that y will not
# change because of z.
new_y = (y - x).cat(x + y)
# Combine:
# unique-to-z
# shared-with-any-x
# shared-with-unique-to-y
new_z = (z - y - x).cat(x + z).cat((y - x) + z)
return x, new_y, new_z
if len(items) == 4:
x = items[0].each(truncator).saveas()
y = items[1].each(truncator).saveas()
z = items[2].each(truncator).saveas()
q = items[3].each(truncator).saveas()
# Same as 2-way
new_y = (y - x).cat(x + y)
# Same as 3-way
new_z = (z - y - x).cat(x + z).cat((y - x) + z)
# Combine:
# unique-to-q
# shared-with-any-x
# shared-with-unique-to-y
# shared-with-unique-to-z
new_q = (q - z - y - x).cat(x + q).cat((y - x) + q).cat((z - y - x) + q)
return x, new_y, new_z, new_q
def venn_maker(
beds,
names=None,
figure_filename=None,
script_filename=None,
additional_args=None,
run=False,
):
"""
Given a list of interval files, write an R script to create a Venn \
diagram of overlaps (and optionally run it).
The R script calls the venn.diagram function of the R package VennDiagram
for extremely flexible Venn and Euler diagram creation. Uses
`cleaned_intersect()` to create string representations of shared intervals.
`beds` is a list of up to 4 filenames or BedTools.
`names` is a list of names to use for the Venn diagram, in the same order
as `beds`. Default is "abcd"[:len(beds)].
`figure_filename` is the TIFF file to save the figure as.
`script_filename` is the optional filename to write the R script to
`additional_args` is list that will be inserted into the R script,
verbatim. For example, to use scaled Euler diagrams with different colors,
use::
additional_args = ['euler.d=TRUE',
'scaled=TRUE',
'cat.col=c("red","blue")']
If `run` is True, then assume R is installed, is on the path, and has
VennDiagram installed . . . and run the script. The resulting filename
will be saved as `figure_filename`.
"""
if figure_filename is None:
figure_filename = "NULL"
else:
figure_filename = '"%s"' % figure_filename
if names is None:
names = "abcd"[: len(beds)]
_beds = []
for bed in beds:
if not isinstance(bed, pybedtools.BedTool):
bed = pybedtools.BedTool(bed)
_beds.append(bed)
cleaned = cleaned_intersect(_beds)
results = OrderedDict(list(zip(names, cleaned)))
s = template.substitute(
x=_dict_to_R_named_list(results),
filename=figure_filename,
names=_list_to_R_syntax(names),
)
if additional_args:
s += "," + ", ".join(additional_args)
s += ")"
if not script_filename:
fn = pybedtools.BedTool._tmp()
else:
fn = script_filename
fout = open(fn, "w")
fout.write(s)
fout.close()
out = fn + ".Rout"
if run:
if not pybedtools.settings._R_installed:
helpers._check_for_R()
cmds = [os.path.join(pybedtools.settings._R_path, "R"), "CMD", "BATCH", fn, out]
p = subprocess.Popen(cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = p.communicate()
if stdout or stderr:
print("stdout:", stdout)
print("stderr:", stderr)
if not script_filename:
return s
return None
pybedtools-0.9.0/pybedtools/featurefuncs.pyx 0000664 0000000 0000000 00000024675 14173526301 0021344 0 ustar 00root root 0000000 0000000 # distutils: language = c++
from cbedtools cimport Interval
from cbedtools import create_interval_from_list
cpdef extend_fields(Interval feature, int n):
"""
Pads the fields of the feature with "." to a total length of `n` fields,
"""
fields = feature.fields[:]
while len(fields) < n:
fields.append('.')
i = create_interval_from_list(fields)
if n > 4 and (i[4] == '.'):
i[4] = '0'
if n > 6 and (i[6] == '.'):
i[6] = str(i.start)
if n > 7 and (i[7] == '.'):
i[7] = str(i.stop)
if n > 8 and (i[8] == '.'):
i[8] = '0,0,0'
return i
cpdef center(Interval feature, int width=100):
"""
Return the *width* bp from the center of a feature. If a feature is
smaller than *width*, then return the entire feature.
"""
if len(feature) < width:
return feature
cdef int start = feature.start
cdef int stop = feature.stop
cdef int center = start + (stop - start) / 2
halfwidth = width / 2
feature.start = center - halfwidth
if feature.start < 1:
feature.start = 1
if halfwidth == 0:
halfwidth = 1
feature.stop = center + halfwidth
return feature
cpdef midpoint(Interval feature):
"""
Specialized version of `center()` that just returns the single-bp midpoint
"""
start = feature.start + (feature.stop - feature.start) / 2
stop = start + 1
feature.start = start
feature.stop = stop
return feature
cpdef greater_than(Interval feature, int size=100):
"""
Return True if feature length > *size*
"""
return len(feature) > size
cpdef less_than(Interval feature, int size=100):
"""
Return True if feature length < *size*
"""
return len(feature) < size
cpdef normalized_to_length(Interval feature, int idx=4, float scalar=0.001):
"""
Normalizes the value at feature[idx] to the feature's length, in kb.
*idx*, by default, is the score field for a BED file, but specify any
integer.
The value at *idx* will be replaced with its scaled value.
*scalar* will be multiplied by the value at *idx*, by default this is
0.001, or per kb.
Useful for calculating RPKM after running intersect with counts
"""
feature[idx] = str(float(feature[idx]) * scalar / len(feature))
return feature
cpdef rename(Interval feature, str name):
"""
Forces a rename of all features, e.g., for renaming everything in a file
'exon'
"""
feature.name = name
return feature
cpdef bedgraph_scale(Interval feature, float scalar):
feature[3] = str(float(feature[3]) * scalar)
return feature
cpdef TSS(Interval feature, int upstream=500, int downstream=500, add_to_name=None, genome=None):
"""
Alias for five_prime.
"""
return star_prime(feature, upstream, downstream, prime=5,
add_to_name=add_to_name, genome=genome)
cdef star_prime(Interval feature, int upstream=500, int downstream=500, int prime=5,
add_to_name=None, genome=None):
if prime == 5:
if feature.strand == '-':
start = feature.stop - downstream
stop = feature.stop + upstream
else:
start = feature.start - upstream
stop = feature.start + downstream
elif prime == 3:
if feature.strand == '-':
start = feature.start - downstream
stop = feature.start + upstream
else:
start = feature.stop - upstream
stop = feature.stop + downstream
if add_to_name:
try:
feature.name += add_to_name
except AttributeError:
pass
if genome is not None:
gstart, gstop = genome[feature.chrom]
stop = min(stop, gstop)
start = max(start, gstart)
if start < 0:
start = 0
if start > stop:
start = stop
feature.start = start
feature.stop = stop
return feature
cpdef five_prime(Interval feature, int upstream=500, int downstream=500,
add_to_name=None, genome=None):
"""
Returns the 5'-most coordinate, plus `upstream` and `downstream` bp; adds
the string `add_to_name` to the feature's name if provided (e.g., "_TSS")
Parameters
----------
feature : pybedtools.Interval instance
upstream, downstream : int
Number of bp upstream or downstream of the strand-specific start
position of the feature to include. Default is 500 for both upstream
and downstream so that the returned feature is 1kb centered on the 5'
end of the feature. Unstranded features (where strand=".") are treated
as plus-strand features.
add_to_name : str or None
If not None, append the string suffix to the name field of the feature (for
example "_TSS").
genome : dict or None
If not None, then ensure that the start/stop positions are within the
boundaries of the chromosome.
"""
return star_prime(feature, upstream, downstream, prime=5,
add_to_name=add_to_name, genome=genome)
cpdef three_prime(Interval feature, int upstream=500, int downstream=500,
add_to_name=None, genome=None):
"""
Returns the 3'-most coordinate, plus `upstream` and `downstream` bp; adds
the string `add_to_name` to the feature's name if provided (e.g.,
"_polyA_site")
Parameters
----------
feature : pybedtools.Interval instance
upstream, downstrea : int
Number of bp upstream or downstream of the strand-specific stop
position of the feature to include. Default is 500 for both upstream
and downstream so that the returned feature is 1kb centered on the 5'
end of the feature. Unstranded features (where strand=".") are treated
as plus-strand features.
add_to_name : str or None
If not None, append the string suffix to the name field of the feature (for
example "_TSS").
genome : dict or None
If not None, then ensure that the start/stop positions are within the
boundaries of the chromosome.
"""
return star_prime(feature, upstream, downstream, prime=3,
add_to_name=add_to_name, genome=genome)
cpdef add_color(Interval feature, cmap, norm):
"""
Signature:
add_color(feature, cmap, norm)
Given the matplotlib colormap `cmap` and the matplotlib Normalize instance
`norm`, return a new 9-field feature (extended out if needed) with the RGB
tuple set according to the score.
"""
if len(feature.fields) < 9:
feature = extend_fields(feature, 9)
feature[6] = str(feature.start)
feature[7] = str(feature.stop)
rgb_float = cmap(norm(float(feature.score)))
feature[8] = ','.join([str(int(i * 255)) for i in rgb_float[:3]])
return feature
cpdef gff2bed(Interval feature, name_field=None):
"""
Signature:
gff2bed(feature, name_field=None)
Converts a GFF feature into a BED6 feature. By default, the name of the
new BED will be feature.name, but if `name_field` is provided then the name
of the new BED will be feature.attrs[name_field].
`name_field` can also be an integer to index into the fields of the object,
so if you want the BED name to be the GFF featuretype, then you can use
`name_field=2`.
If the specified field does not exist, then "." will be used for the name.
"""
if name_field is None:
name = feature.name
else:
try:
if isinstance(name_field, basestring):
name = feature.attrs[name_field]
if isinstance(name_field, int):
name = feature[name_field]
except (NameError, KeyError):
name = "."
return create_interval_from_list([
str(feature.chrom),
str(feature.start),
str(feature.stop),
name,
feature.score,
feature.strand])
cpdef bed2gff(Interval feature):
"""
Signature:
bed2gff(feature)
Converts a BED feature (BED3 through BED12) into a GFF format.
Chrom, start, stop, score, and strand are put directly into the
corresponding GFF fields. Other BED fields are put into the GFF attributes
field, named according to the UCSC BED format definition.
If there are more than 12 BED fields, the additional fields will be added
to the GFF attributes using the 0-based index (so starting at "12") as the
key.
GFF fields that do not have a direct mapping to BED format (feature type,
source, phase) are set to ".".
1 bp is added to the start position to finish the conversion to GFF.
"""
# Note that Interval.score, .strand, and .name have a default of ".", so no
# need to do the extra try/except IndexError for those fields.
mapping = (
(6, "thickStart"),
(7, "thickEnd"),
(8, "itemRgb"),
(9, "blockCount"),
(10, "blockSizes"),
(11, "blockStarts")
)
# Add any standard BED fields we might have
attributes = ['Name="%s"' % feature.name]
for k, v in mapping:
try:
attributes.append('%s="%s"' % (v, feature.fields[k]))
except IndexError:
break
# Add any additional fields, keyed by their index
if len(feature.fields) > 12:
for i in range(12, len(feature.fields)):
attributes.append('%s="%s"' % (i, feature.fields[i]))
attributes = '; '.join(attributes) + ';'
return create_interval_from_list([
str(feature.chrom),
'.',
'.',
str(feature.start + 1),
str(feature.stop),
feature.score,
feature.strand,
'.',
attributes])
class UniqueID(object):
def __init__(self, pattern="%d", first=0):
"""
Class to help create uniquely-named features.
Example usage:
>>> a = pybedtools.example_bedtool('a.bed')
>>> uid = UniqueID("f_%d")
>>> print(a.each(uid)) # doctest: +NORMALIZE_WHITESPACE
chr1 1 100 f_0 0 +
chr1 100 200 f_1 0 +
chr1 150 500 f_2 0 -
chr1 900 950 f_3 0 +
Parameters
----------
pattern : str
Pattern will be filled in using `% self.count`
first : int
`self.count` will be initialzed to this value.
"""
self.pattern = pattern
self.first = first
self.count = first
def __call__(self, feature):
feature.name = self.pattern % self.count
self.count += 1
return feature
pybedtools-0.9.0/pybedtools/filenames.py 0000664 0000000 0000000 00000002514 14173526301 0020411 0 ustar 00root root 0000000 0000000 """
Provides access to example files and keeps track of all temp files created
during a Python session.
"""
import os
import six
TEMPFILES = []
def data_dir():
"""
Returns the data directory that contains example files for tests and
documentation.
"""
return os.path.join(os.path.dirname(__file__), "test", "data")
def example_filename(fn):
"""
Return a bed file from the pybedtools examples directory. Use
func:`list_example_files` to see a list of files that are included.
"""
fn = os.path.join(data_dir(), fn)
if not os.path.exists(fn):
msg = "%s does not exist" % fn
if six.PY2:
raise ValueError(msg)
raise FileNotFoundError(msg)
return fn
def list_example_files():
"""
Returns a list of files in the examples dir. Choose one and pass it to
:func:`example_filename` to get the full path to an example file.
Example usage:
>>> from pybedtools import BedTool
>>> choices = list_example_files()
>>> assert 'a.bed' in choices
>>> bedfn = example_filename('a.bed')
>>> mybedtool = BedTool(bedfn)
"""
candidate_fns = os.listdir(data_dir())
exts = (".bed", ".gff", ".gtf", ".bed.gz", ".bam", ".gff.gz")
valid_fns = [f for f in candidate_fns if f.endswith(exts)]
return sorted(valid_fns)
pybedtools-0.9.0/pybedtools/genome_registry.py 0000664 0000000 0000000 00000334351 14173526301 0021657 0 ustar 00root root 0000000 0000000 """
Chromsize dictionaries, as downloaded from UCSC. Need more? Use::
pybedtools.get_chromsizes_from_ucsc('assemblyname')
"""
# Figure out which version of OrderedDict we want....
import sys
if (sys.version_info[0] == 2) and (sys.version_info[1] < 7):
from ordereddict import OrderedDict
else:
from collections import OrderedDict
dm6 = OrderedDict(
(
("chr2L", (0, 23513712)),
("chr2R", (0, 25286936)),
("chr3L", (0, 28110227)),
("chr3R", (0, 32079331)),
("chr4", (0, 1348131)),
("chrM", (0, 19524)),
("chrUn_CP007071v1", (0, 19956)),
("chrUn_CP007072v1", (0, 44411)),
("chrUn_CP007073v1", (0, 13157)),
("chrUn_CP007074v1", (0, 76224)),
("chrUn_CP007075v1", (0, 11983)),
("chrUn_CP007076v1", (0, 87365)),
("chrUn_CP007077v1", (0, 36913)),
("chrUn_CP007078v1", (0, 22604)),
("chrUn_CP007079v1", (0, 23238)),
("chrUn_CP007080v1", (0, 86267)),
("chrUn_CP007081v1", (0, 88768)),
("chrUn_CP007082v1", (0, 36482)),
("chrUn_CP007083v1", (0, 25537)),
("chrUn_CP007084v1", (0, 62570)),
("chrUn_CP007085v1", (0, 45120)),
("chrUn_CP007086v1", (0, 22882)),
("chrUn_CP007087v1", (0, 46986)),
("chrUn_CP007088v1", (0, 37106)),
("chrUn_CP007089v1", (0, 16157)),
("chrUn_CP007090v1", (0, 57785)),
("chrUn_CP007091v1", (0, 20763)),
("chrUn_CP007092v1", (0, 28305)),
("chrUn_CP007093v1", (0, 25698)),
("chrUn_CP007094v1", (0, 29583)),
("chrUn_CP007095v1", (0, 25560)),
("chrUn_CP007096v1", (0, 26115)),
("chrUn_CP007097v1", (0, 13455)),
("chrUn_CP007098v1", (0, 43383)),
("chrUn_CP007099v1", (0, 12632)),
("chrUn_CP007100v1", (0, 10091)),
("chrUn_CP007101v1", (0, 24503)),
("chrUn_CP007102v1", (0, 12714)),
("chrUn_CP007105v1", (0, 47411)),
("chrUn_CP007120v1", (0, 76973)),
("chrUn_DS483562v1", (0, 50625)),
("chrUn_DS483629v1", (0, 15417)),
("chrUn_DS483641v1", (0, 14503)),
("chrUn_DS483646v1", (0, 14098)),
("chrUn_DS483647v1", (0, 14028)),
("chrUn_DS483649v1", (0, 13935)),
("chrUn_DS483650v1", (0, 13906)),
("chrUn_DS483658v1", (0, 13455)),
("chrUn_DS483659v1", (0, 13416)),
("chrUn_DS483662v1", (0, 13317)),
("chrUn_DS483663v1", (0, 13256)),
("chrUn_DS483670v1", (0, 12827)),
("chrUn_DS483673v1", (0, 12654)),
("chrUn_DS483674v1", (0, 12632)),
("chrUn_DS483675v1", (0, 12536)),
("chrUn_DS483678v1", (0, 12424)),
("chrUn_DS483679v1", (0, 12424)),
("chrUn_DS483680v1", (0, 12399)),
("chrUn_DS483681v1", (0, 12368)),
("chrUn_DS483682v1", (0, 12354)),
("chrUn_DS483686v1", (0, 12148)),
("chrUn_DS483687v1", (0, 12142)),
("chrUn_DS483688v1", (0, 12095)),
("chrUn_DS483689v1", (0, 12034)),
("chrUn_DS483692v1", (0, 11985)),
("chrUn_DS483693v1", (0, 11958)),
("chrUn_DS483694v1", (0, 11951)),
("chrUn_DS483695v1", (0, 11743)),
("chrUn_DS483700v1", (0, 11430)),
("chrUn_DS483701v1", (0, 11220)),
("chrUn_DS483702v1", (0, 11148)),
("chrUn_DS483703v1", (0, 11126)),
("chrUn_DS483705v1", (0, 27456)),
("chrUn_DS483707v1", (0, 25840)),
("chrUn_DS483709v1", (0, 18299)),
("chrUn_DS483711v1", (0, 14687)),
("chrUn_DS483712v1", (0, 14199)),
("chrUn_DS483719v1", (0, 12027)),
("chrUn_DS483723v1", (0, 21074)),
("chrUn_DS483724v1", (0, 13501)),
("chrUn_DS483726v1", (0, 14983)),
("chrUn_DS483728v1", (0, 12681)),
("chrUn_DS483734v1", (0, 15522)),
("chrUn_DS483735v1", (0, 15068)),
("chrUn_DS483736v1", (0, 14006)),
("chrUn_DS483737v1", (0, 13553)),
("chrUn_DS483738v1", (0, 12856)),
("chrUn_DS483739v1", (0, 12459)),
("chrUn_DS483740v1", (0, 12002)),
("chrUn_DS483741v1", (0, 11807)),
("chrUn_DS483743v1", (0, 11569)),
("chrUn_DS483744v1", (0, 9865)),
("chrUn_DS483746v1", (0, 9341)),
("chrUn_DS483748v1", (0, 8346)),
("chrUn_DS483749v1", (0, 8007)),
("chrUn_DS483750v1", (0, 7722)),
("chrUn_DS483751v1", (0, 7314)),
("chrUn_DS483753v1", (0, 7123)),
("chrUn_DS483754v1", (0, 7003)),
("chrUn_DS483755v1", (0, 6936)),
("chrUn_DS483757v1", (0, 6900)),
("chrUn_DS483758v1", (0, 6860)),
("chrUn_DS483759v1", (0, 6860)),
("chrUn_DS483760v1", (0, 6825)),
("chrUn_DS483762v1", (0, 6698)),
("chrUn_DS483763v1", (0, 6546)),
("chrUn_DS483767v1", (0, 6396)),
("chrUn_DS483768v1", (0, 6294)),
("chrUn_DS483769v1", (0, 6237)),
("chrUn_DS483770v1", (0, 6193)),
("chrUn_DS483772v1", (0, 6076)),
("chrUn_DS483773v1", (0, 6062)),
("chrUn_DS483774v1", (0, 6041)),
("chrUn_DS483776v1", (0, 6000)),
("chrUn_DS483780v1", (0, 5968)),
("chrUn_DS483781v1", (0, 5952)),
("chrUn_DS483782v1", (0, 5915)),
("chrUn_DS483783v1", (0, 5891)),
("chrUn_DS483785v1", (0, 5772)),
("chrUn_DS483787v1", (0, 5698)),
("chrUn_DS483792v1", (0, 5465)),
("chrUn_DS483793v1", (0, 5463)),
("chrUn_DS483796v1", (0, 5383)),
("chrUn_DS483797v1", (0, 5360)),
("chrUn_DS483798v1", (0, 5324)),
("chrUn_DS483799v1", (0, 5323)),
("chrUn_DS483800v1", (0, 5316)),
("chrUn_DS483801v1", (0, 5281)),
("chrUn_DS483804v1", (0, 5189)),
("chrUn_DS483805v1", (0, 5182)),
("chrUn_DS483806v1", (0, 5098)),
("chrUn_DS483807v1", (0, 5061)),
("chrUn_DS483808v1", (0, 5060)),
("chrUn_DS483810v1", (0, 5026)),
("chrUn_DS483811v1", (0, 5000)),
("chrUn_DS483812v1", (0, 4996)),
("chrUn_DS483813v1", (0, 4994)),
("chrUn_DS483814v1", (0, 4986)),
("chrUn_DS483815v1", (0, 4967)),
("chrUn_DS483816v1", (0, 4939)),
("chrUn_DS483817v1", (0, 4933)),
("chrUn_DS483819v1", (0, 4903)),
("chrUn_DS483820v1", (0, 4888)),
("chrUn_DS483822v1", (0, 4865)),
("chrUn_DS483824v1", (0, 4820)),
("chrUn_DS483825v1", (0, 4815)),
("chrUn_DS483828v1", (0, 4785)),
("chrUn_DS483832v1", (0, 4705)),
("chrUn_DS483833v1", (0, 4701)),
("chrUn_DS483837v1", (0, 4608)),
("chrUn_DS483839v1", (0, 4581)),
("chrUn_DS483840v1", (0, 4573)),
("chrUn_DS483841v1", (0, 4553)),
("chrUn_DS483844v1", (0, 4471)),
("chrUn_DS483845v1", (0, 4465)),
("chrUn_DS483846v1", (0, 4452)),
("chrUn_DS483848v1", (0, 4436)),
("chrUn_DS483849v1", (0, 4400)),
("chrUn_DS483853v1", (0, 4381)),
("chrUn_DS483854v1", (0, 4378)),
("chrUn_DS483855v1", (0, 4377)),
("chrUn_DS483856v1", (0, 4370)),
("chrUn_DS483858v1", (0, 4361)),
("chrUn_DS483859v1", (0, 4336)),
("chrUn_DS483861v1", (0, 4310)),
("chrUn_DS483862v1", (0, 4310)),
("chrUn_DS483863v1", (0, 4305)),
("chrUn_DS483864v1", (0, 4295)),
("chrUn_DS483865v1", (0, 4289)),
("chrUn_DS483866v1", (0, 4273)),
("chrUn_DS483867v1", (0, 4272)),
("chrUn_DS483868v1", (0, 4256)),
("chrUn_DS483870v1", (0, 4231)),
("chrUn_DS483871v1", (0, 4225)),
("chrUn_DS483872v1", (0, 4222)),
("chrUn_DS483873v1", (0, 4222)),
("chrUn_DS483874v1", (0, 4202)),
("chrUn_DS483876v1", (0, 4188)),
("chrUn_DS483877v1", (0, 4183)),
("chrUn_DS483878v1", (0, 4182)),
("chrUn_DS483879v1", (0, 4163)),
("chrUn_DS483880v1", (0, 4150)),
("chrUn_DS483881v1", (0, 4135)),
("chrUn_DS483886v1", (0, 4081)),
("chrUn_DS483891v1", (0, 4030)),
("chrUn_DS483895v1", (0, 4006)),
("chrUn_DS483896v1", (0, 3991)),
("chrUn_DS483898v1", (0, 3970)),
("chrUn_DS483899v1", (0, 3964)),
("chrUn_DS483900v1", (0, 3960)),
("chrUn_DS483901v1", (0, 3950)),
("chrUn_DS483904v1", (0, 3932)),
("chrUn_DS483906v1", (0, 3924)),
("chrUn_DS483908v1", (0, 3913)),
("chrUn_DS483910v1", (0, 3906)),
("chrUn_DS483913v1", (0, 3871)),
("chrUn_DS483914v1", (0, 3864)),
("chrUn_DS483915v1", (0, 3858)),
("chrUn_DS483918v1", (0, 3818)),
("chrUn_DS483919v1", (0, 3807)),
("chrUn_DS483920v1", (0, 3806)),
("chrUn_DS483921v1", (0, 3806)),
("chrUn_DS483925v1", (0, 3755)),
("chrUn_DS483927v1", (0, 3737)),
("chrUn_DS483929v1", (0, 3717)),
("chrUn_DS483930v1", (0, 3716)),
("chrUn_DS483933v1", (0, 3708)),
("chrUn_DS483936v1", (0, 3681)),
("chrUn_DS483937v1", (0, 3660)),
("chrUn_DS483938v1", (0, 3650)),
("chrUn_DS483939v1", (0, 3649)),
("chrUn_DS483940v1", (0, 3648)),
("chrUn_DS483941v1", (0, 3646)),
("chrUn_DS483943v1", (0, 3638)),
("chrUn_DS483944v1", (0, 3622)),
("chrUn_DS483945v1", (0, 3622)),
("chrUn_DS483947v1", (0, 3603)),
("chrUn_DS483949v1", (0, 3593)),
("chrUn_DS483951v1", (0, 3574)),
("chrUn_DS483953v1", (0, 3557)),
("chrUn_DS483954v1", (0, 3554)),
("chrUn_DS483956v1", (0, 3553)),
("chrUn_DS483957v1", (0, 3553)),
("chrUn_DS483960v1", (0, 3527)),
("chrUn_DS483961v1", (0, 3527)),
("chrUn_DS483964v1", (0, 3519)),
("chrUn_DS483965v1", (0, 3503)),
("chrUn_DS483970v1", (0, 3490)),
("chrUn_DS483972v1", (0, 3477)),
("chrUn_DS483975v1", (0, 3466)),
("chrUn_DS483976v1", (0, 3463)),
("chrUn_DS483977v1", (0, 3458)),
("chrUn_DS483979v1", (0, 3434)),
("chrUn_DS483982v1", (0, 3402)),
("chrUn_DS483983v1", (0, 3396)),
("chrUn_DS483985v1", (0, 3389)),
("chrUn_DS483986v1", (0, 3386)),
("chrUn_DS483989v1", (0, 3373)),
("chrUn_DS483992v1", (0, 3365)),
("chrUn_DS483994v1", (0, 3348)),
("chrUn_DS483998v1", (0, 3313)),
("chrUn_DS483999v1", (0, 3308)),
("chrUn_DS484000v1", (0, 3302)),
("chrUn_DS484001v1", (0, 3299)),
("chrUn_DS484003v1", (0, 3284)),
("chrUn_DS484004v1", (0, 3277)),
("chrUn_DS484006v1", (0, 3268)),
("chrUn_DS484007v1", (0, 3262)),
("chrUn_DS484009v1", (0, 3259)),
("chrUn_DS484010v1", (0, 3259)),
("chrUn_DS484013v1", (0, 3252)),
("chrUn_DS484015v1", (0, 3234)),
("chrUn_DS484017v1", (0, 3227)),
("chrUn_DS484018v1", (0, 3223)),
("chrUn_DS484020v1", (0, 3218)),
("chrUn_DS484022v1", (0, 3209)),
("chrUn_DS484025v1", (0, 3201)),
("chrUn_DS484027v1", (0, 3197)),
("chrUn_DS484028v1", (0, 3196)),
("chrUn_DS484031v1", (0, 3190)),
("chrUn_DS484036v1", (0, 3174)),
("chrUn_DS484038v1", (0, 3171)),
("chrUn_DS484039v1", (0, 3162)),
("chrUn_DS484040v1", (0, 3159)),
("chrUn_DS484041v1", (0, 3157)),
("chrUn_DS484042v1", (0, 3156)),
("chrUn_DS484044v1", (0, 3144)),
("chrUn_DS484045v1", (0, 3129)),
("chrUn_DS484047v1", (0, 3123)),
("chrUn_DS484048v1", (0, 3120)),
("chrUn_DS484050v1", (0, 3100)),
("chrUn_DS484052v1", (0, 3089)),
("chrUn_DS484053v1", (0, 3085)),
("chrUn_DS484054v1", (0, 3080)),
("chrUn_DS484055v1", (0, 3080)),
("chrUn_DS484058v1", (0, 3073)),
("chrUn_DS484059v1", (0, 3073)),
("chrUn_DS484062v1", (0, 3058)),
("chrUn_DS484064v1", (0, 3044)),
("chrUn_DS484065v1", (0, 3043)),
("chrUn_DS484066v1", (0, 3025)),
("chrUn_DS484068v1", (0, 3013)),
("chrUn_DS484069v1", (0, 3010)),
("chrUn_DS484070v1", (0, 3009)),
("chrUn_DS484073v1", (0, 2999)),
("chrUn_DS484076v1", (0, 2991)),
("chrUn_DS484077v1", (0, 2984)),
("chrUn_DS484078v1", (0, 2982)),
("chrUn_DS484079v1", (0, 2982)),
("chrUn_DS484080v1", (0, 2971)),
("chrUn_DS484083v1", (0, 2957)),
("chrUn_DS484086v1", (0, 2943)),
("chrUn_DS484087v1", (0, 2937)),
("chrUn_DS484089v1", (0, 2928)),
("chrUn_DS484090v1", (0, 2927)),
("chrUn_DS484091v1", (0, 2926)),
("chrUn_DS484092v1", (0, 2924)),
("chrUn_DS484093v1", (0, 2922)),
("chrUn_DS484095v1", (0, 2919)),
("chrUn_DS484096v1", (0, 2916)),
("chrUn_DS484097v1", (0, 2914)),
("chrUn_DS484098v1", (0, 2911)),
("chrUn_DS484100v1", (0, 2905)),
("chrUn_DS484102v1", (0, 2903)),
("chrUn_DS484104v1", (0, 2893)),
("chrUn_DS484105v1", (0, 2889)),
("chrUn_DS484106v1", (0, 2884)),
("chrUn_DS484107v1", (0, 2882)),
("chrUn_DS484108v1", (0, 2882)),
("chrUn_DS484109v1", (0, 2882)),
("chrUn_DS484111v1", (0, 2881)),
("chrUn_DS484113v1", (0, 2876)),
("chrUn_DS484116v1", (0, 2860)),
("chrUn_DS484117v1", (0, 2860)),
("chrUn_DS484118v1", (0, 2858)),
("chrUn_DS484120v1", (0, 2855)),
("chrUn_DS484122v1", (0, 2849)),
("chrUn_DS484123v1", (0, 2848)),
("chrUn_DS484134v1", (0, 2828)),
("chrUn_DS484138v1", (0, 2822)),
("chrUn_DS484139v1", (0, 2820)),
("chrUn_DS484144v1", (0, 2811)),
("chrUn_DS484145v1", (0, 2804)),
("chrUn_DS484147v1", (0, 2796)),
("chrUn_DS484148v1", (0, 2795)),
("chrUn_DS484149v1", (0, 2795)),
("chrUn_DS484151v1", (0, 2794)),
("chrUn_DS484152v1", (0, 2793)),
("chrUn_DS484153v1", (0, 2793)),
("chrUn_DS484154v1", (0, 2791)),
("chrUn_DS484155v1", (0, 2790)),
("chrUn_DS484156v1", (0, 2788)),
("chrUn_DS484157v1", (0, 2787)),
("chrUn_DS484159v1", (0, 2784)),
("chrUn_DS484160v1", (0, 2783)),
("chrUn_DS484167v1", (0, 2745)),
("chrUn_DS484168v1", (0, 2744)),
("chrUn_DS484169v1", (0, 2736)),
("chrUn_DS484170v1", (0, 2733)),
("chrUn_DS484176v1", (0, 2708)),
("chrUn_DS484177v1", (0, 2703)),
("chrUn_DS484180v1", (0, 2697)),
("chrUn_DS484183v1", (0, 2688)),
("chrUn_DS484188v1", (0, 2670)),
("chrUn_DS484189v1", (0, 2669)),
("chrUn_DS484190v1", (0, 2668)),
("chrUn_DS484191v1", (0, 2665)),
("chrUn_DS484192v1", (0, 2664)),
("chrUn_DS484193v1", (0, 2647)),
("chrUn_DS484196v1", (0, 2644)),
("chrUn_DS484202v1", (0, 2636)),
("chrUn_DS484205v1", (0, 2629)),
("chrUn_DS484206v1", (0, 2628)),
("chrUn_DS484207v1", (0, 2626)),
("chrUn_DS484209v1", (0, 2618)),
("chrUn_DS484210v1", (0, 2617)),
("chrUn_DS484212v1", (0, 2612)),
("chrUn_DS484213v1", (0, 2611)),
("chrUn_DS484217v1", (0, 2603)),
("chrUn_DS484220v1", (0, 2588)),
("chrUn_DS484221v1", (0, 2584)),
("chrUn_DS484222v1", (0, 2583)),
("chrUn_DS484224v1", (0, 2577)),
("chrUn_DS484225v1", (0, 2577)),
("chrUn_DS484226v1", (0, 2576)),
("chrUn_DS484228v1", (0, 2575)),
("chrUn_DS484229v1", (0, 2575)),
("chrUn_DS484230v1", (0, 2575)),
("chrUn_DS484231v1", (0, 2574)),
("chrUn_DS484232v1", (0, 2570)),
("chrUn_DS484234v1", (0, 2561)),
("chrUn_DS484236v1", (0, 2556)),
("chrUn_DS484238v1", (0, 2555)),
("chrUn_DS484239v1", (0, 2549)),
("chrUn_DS484241v1", (0, 2547)),
("chrUn_DS484242v1", (0, 2541)),
("chrUn_DS484243v1", (0, 2541)),
("chrUn_DS484244v1", (0, 2536)),
("chrUn_DS484246v1", (0, 2529)),
("chrUn_DS484247v1", (0, 2529)),
("chrUn_DS484251v1", (0, 2521)),
("chrUn_DS484253v1", (0, 2520)),
("chrUn_DS484254v1", (0, 2517)),
("chrUn_DS484255v1", (0, 2516)),
("chrUn_DS484256v1", (0, 2511)),
("chrUn_DS484257v1", (0, 2511)),
("chrUn_DS484258v1", (0, 2510)),
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("chrX_DS485959v1_random", (0, 1013)),
("chrX_DS485962v1_random", (0, 1012)),
("chrX_DS485967v1_random", (0, 1011)),
("chrX_DS485978v1_random", (0, 1008)),
("chrX_DS485981v1_random", (0, 1007)),
("chrX_DS485987v1_random", (0, 1005)),
("chrX_DS485994v1_random", (0, 1004)),
("chrY", (0, 3667352)),
("chrY_CP007107v1_random", (0, 73091)),
("chrY_CP007108v1_random", (0, 66731)),
("chrY_CP007109v1_random", (0, 66439)),
("chrY_CP007110v1_random", (0, 33316)),
("chrY_CP007111v1_random", (0, 34521)),
("chrY_CP007112v1_random", (0, 39041)),
("chrY_CP007113v1_random", (0, 34359)),
("chrY_CP007114v1_random", (0, 31460)),
("chrY_CP007115v1_random", (0, 21921)),
("chrY_CP007116v1_random", (0, 25805)),
("chrY_CP007117v1_random", (0, 24380)),
("chrY_CP007118v1_random", (0, 44104)),
("chrY_CP007119v1_random", (0, 11498)),
("chrY_DS483677v1_random", (0, 12513)),
("chrY_DS483690v1_random", (0, 12001)),
("chrY_DS483725v1_random", (0, 13079)),
("chrY_DS483742v1_random", (0, 11763)),
("chrY_DS483778v1_random", (0, 5984)),
("chrY_DS483788v1_random", (0, 5564)),
("chrY_DS483790v1_random", (0, 5520)),
("chrY_DS483875v1_random", (0, 4197)),
("chrY_DS483889v1_random", (0, 4059)),
("chrY_DS483931v1_random", (0, 3713)),
("chrY_DS483959v1_random", (0, 3537)),
("chrY_DS483966v1_random", (0, 3502)),
("chrY_DS483967v1_random", (0, 3499)),
("chrY_DS483987v1_random", (0, 3375)),
("chrY_DS483988v1_random", (0, 3374)),
("chrY_DS483996v1_random", (0, 3341)),
("chrY_DS484021v1_random", (0, 3213)),
("chrY_DS484029v1_random", (0, 3195)),
("chrY_DS484037v1_random", (0, 3173)),
("chrY_DS484043v1_random", (0, 3154)),
("chrY_DS484049v1_random", (0, 3102)),
("chrY_DS484056v1_random", (0, 3077)),
("chrY_DS484063v1_random", (0, 3046)),
("chrY_DS484094v1_random", (0, 2922)),
("chrY_DS484103v1_random", (0, 2899)),
("chrY_DS484128v1_random", (0, 2836)),
("chrY_DS484142v1_random", (0, 2815)),
("chrY_DS484146v1_random", (0, 2799)),
("chrY_DS484164v1_random", (0, 2762)),
("chrY_DS484171v1_random", (0, 2728)),
("chrY_DS484175v1_random", (0, 2709)),
("chrY_DS484181v1_random", (0, 2694)),
("chrY_DS484184v1_random", (0, 2688)),
("chrY_DS484197v1_random", (0, 2642)),
("chrY_DS484233v1_random", (0, 2565)),
("chrY_DS484249v1_random", (0, 2522)),
("chrY_DS484250v1_random", (0, 2521)),
("chrY_DS484259v1_random", (0, 2508)),
("chrY_DS484266v1_random", (0, 2477)),
("chrY_DS484270v1_random", (0, 2473)),
("chrY_DS484336v1_random", (0, 2342)),
("chrY_DS484351v1_random", (0, 2303)),
("chrY_DS484377v1_random", (0, 2232)),
("chrY_DS484390v1_random", (0, 2206)),
("chrY_DS484441v1_random", (0, 2096)),
("chrY_DS484465v1_random", (0, 2063)),
("chrY_DS484492v1_random", (0, 2005)),
("chrY_DS484523v1_random", (0, 1961)),
("chrY_DS484530v1_random", (0, 1947)),
("chrY_DS484531v1_random", (0, 1946)),
("chrY_DS484574v1_random", (0, 1890)),
("chrY_DS484589v1_random", (0, 1863)),
("chrY_DS484631v1_random", (0, 1775)),
("chrY_DS484637v1_random", (0, 1766)),
("chrY_DS484641v1_random", (0, 1756)),
("chrY_DS484643v1_random", (0, 1751)),
("chrY_DS484665v1_random", (0, 1712)),
("chrY_DS484674v1_random", (0, 1690)),
("chrY_DS484675v1_random", (0, 1690)),
("chrY_DS484680v1_random", (0, 1683)),
("chrY_DS484681v1_random", (0, 1683)),
("chrY_DS484696v1_random", (0, 1637)),
("chrY_DS484706v1_random", (0, 1619)),
("chrY_DS484757v1_random", (0, 1525)),
("chrY_DS484781v1_random", (0, 1485)),
("chrY_DS484805v1_random", (0, 1459)),
("chrY_DS484807v1_random", (0, 1456)),
("chrY_DS484818v1_random", (0, 1443)),
("chrY_DS484820v1_random", (0, 1440)),
("chrY_DS484830v1_random", (0, 1429)),
("chrY_DS484863v1_random", (0, 1393)),
("chrY_DS484875v1_random", (0, 1383)),
("chrY_DS484876v1_random", (0, 1382)),
("chrY_DS484908v1_random", (0, 1360)),
("chrY_DS484909v1_random", (0, 1356)),
("chrY_DS484924v1_random", (0, 1341)),
("chrY_DS484942v1_random", (0, 1333)),
("chrY_DS484945v1_random", (0, 1330)),
("chrY_DS484956v1_random", (0, 1322)),
("chrY_DS484983v1_random", (0, 1304)),
("chrY_DS484986v1_random", (0, 1303)),
("chrY_DS484992v1_random", (0, 1297)),
("chrY_DS484994v1_random", (0, 1297)),
("chrY_DS485013v1_random", (0, 1284)),
("chrY_DS485014v1_random", (0, 1283)),
("chrY_DS485016v1_random", (0, 1282)),
("chrY_DS485028v1_random", (0, 1277)),
("chrY_DS485042v1_random", (0, 1271)),
("chrY_DS485048v1_random", (0, 1270)),
("chrY_DS485051v1_random", (0, 1268)),
("chrY_DS485070v1_random", (0, 1260)),
("chrY_DS485097v1_random", (0, 1243)),
("chrY_DS485099v1_random", (0, 1241)),
("chrY_DS485113v1_random", (0, 1237)),
("chrY_DS485137v1_random", (0, 1230)),
("chrY_DS485143v1_random", (0, 1227)),
("chrY_DS485158v1_random", (0, 1224)),
("chrY_DS485159v1_random", (0, 1224)),
("chrY_DS485166v1_random", (0, 1222)),
("chrY_DS485178v1_random", (0, 1218)),
("chrY_DS485219v1_random", (0, 1202)),
("chrY_DS485236v1_random", (0, 1195)),
("chrY_DS485250v1_random", (0, 1192)),
("chrY_DS485267v1_random", (0, 1186)),
("chrY_DS485283v1_random", (0, 1182)),
("chrY_DS485288v1_random", (0, 1181)),
("chrY_DS485302v1_random", (0, 1176)),
("chrY_DS485315v1_random", (0, 1171)),
("chrY_DS485316v1_random", (0, 1171)),
("chrY_DS485318v1_random", (0, 1170)),
("chrY_DS485320v1_random", (0, 1169)),
("chrY_DS485328v1_random", (0, 1166)),
("chrY_DS485329v1_random", (0, 1166)),
("chrY_DS485335v1_random", (0, 1163)),
("chrY_DS485343v1_random", (0, 1162)),
("chrY_DS485359v1_random", (0, 1159)),
("chrY_DS485363v1_random", (0, 1158)),
("chrY_DS485374v1_random", (0, 1155)),
("chrY_DS485375v1_random", (0, 1155)),
("chrY_DS485388v1_random", (0, 1152)),
("chrY_DS485399v1_random", (0, 1148)),
("chrY_DS485409v1_random", (0, 1147)),
("chrY_DS485416v1_random", (0, 1146)),
("chrY_DS485422v1_random", (0, 1144)),
("chrY_DS485423v1_random", (0, 1144)),
("chrY_DS485427v1_random", (0, 1142)),
("chrY_DS485430v1_random", (0, 1141)),
("chrY_DS485436v1_random", (0, 1140)),
("chrY_DS485440v1_random", (0, 1139)),
("chrY_DS485450v1_random", (0, 1136)),
("chrY_DS485452v1_random", (0, 1136)),
("chrY_DS485460v1_random", (0, 1134)),
("chrY_DS485470v1_random", (0, 1132)),
("chrY_DS485473v1_random", (0, 1131)),
("chrY_DS485483v1_random", (0, 1129)),
("chrY_DS485492v1_random", (0, 1126)),
("chrY_DS485512v1_random", (0, 1122)),
("chrY_DS485523v1_random", (0, 1118)),
("chrY_DS485532v1_random", (0, 1116)),
("chrY_DS485534v1_random", (0, 1116)),
("chrY_DS485552v1_random", (0, 1111)),
("chrY_DS485560v1_random", (0, 1110)),
("chrY_DS485561v1_random", (0, 1109)),
("chrY_DS485575v1_random", (0, 1106)),
("chrY_DS485594v1_random", (0, 1101)),
("chrY_DS485604v1_random", (0, 1098)),
("chrY_DS485625v1_random", (0, 1090)),
("chrY_DS485641v1_random", (0, 1087)),
("chrY_DS485646v1_random", (0, 1086)),
("chrY_DS485685v1_random", (0, 1075)),
("chrY_DS485696v1_random", (0, 1073)),
("chrY_DS485698v1_random", (0, 1072)),
("chrY_DS485718v1_random", (0, 1068)),
("chrY_DS485732v1_random", (0, 1064)),
("chrY_DS485736v1_random", (0, 1063)),
("chrY_DS485739v1_random", (0, 1063)),
("chrY_DS485749v1_random", (0, 1060)),
("chrY_DS485752v1_random", (0, 1059)),
("chrY_DS485755v1_random", (0, 1058)),
("chrY_DS485764v1_random", (0, 1056)),
("chrY_DS485767v1_random", (0, 1056)),
("chrY_DS485772v1_random", (0, 1054)),
("chrY_DS485776v1_random", (0, 1053)),
("chrY_DS485786v1_random", (0, 1051)),
("chrY_DS485795v1_random", (0, 1049)),
("chrY_DS485839v1_random", (0, 1042)),
("chrY_DS485840v1_random", (0, 1041)),
("chrY_DS485849v1_random", (0, 1039)),
("chrY_DS485858v1_random", (0, 1037)),
("chrY_DS485865v1_random", (0, 1035)),
("chrY_DS485873v1_random", (0, 1033)),
("chrY_DS485875v1_random", (0, 1032)),
("chrY_DS485885v1_random", (0, 1030)),
("chrY_DS485888v1_random", (0, 1029)),
("chrY_DS485892v1_random", (0, 1029)),
("chrY_DS485894v1_random", (0, 1029)),
("chrY_DS485901v1_random", (0, 1027)),
("chrY_DS485927v1_random", (0, 1020)),
("chrY_DS485938v1_random", (0, 1019)),
("chrY_DS485956v1_random", (0, 1014)),
("chrY_DS485960v1_random", (0, 1012)),
("chrY_DS485963v1_random", (0, 1012)),
("chrY_DS485972v1_random", (0, 1010)),
("chrY_DS485974v1_random", (0, 1010)),
("chrY_DS485975v1_random", (0, 1010)),
("chrY_DS486003v1_random", (0, 1001)),
)
)
dm6.default = OrderedDict()
for chrom, size in list(dm6.items()):
if "_random" in chrom or "Un_" in chrom:
continue
dm6.default[chrom] = size
dm3 = OrderedDict(
(
("chr2L", (0, 23011544)),
("chr2R", (0, 21146708)),
("chr3L", (0, 24543557)),
("chr3R", (0, 27905053)),
("chr4", (0, 1351857)),
("chrX", (0, 22422827)),
("chr2LHet", (0, 368872)),
("chr2RHet", (0, 3288761)),
("chr3LHet", (0, 2555491)),
("chr3RHet", (0, 2517507)),
("chrM", (0, 19517)),
("chrU", (0, 10049037)),
("chrUextra", (0, 29004656)),
("chrXHet", (0, 204112)),
("chrYHet", (0, 347038)),
)
)
# No chrUextra or chrM
dm3.default = OrderedDict()
for chrom, size in list(dm3.items()):
if chrom in ["chrUextra", "chrM"]:
continue
dm3.default[chrom] = size
# No chrU*, chr*Het, or chrM
dm3.euchromatic = OrderedDict()
for chrom, size in list(dm3.default.items()):
if "chrU" in chrom:
continue
if "Het" in chrom:
continue
dm3.euchromatic[chrom] = size
mm10 = OrderedDict(
(
("chr1", (0, 195471971)),
("chr2", (0, 182113224)),
("chr3", (0, 160039680)),
("chr4", (0, 156508116)),
("chr5", (0, 151834684)),
("chr6", (0, 149736546)),
("chr7", (0, 145441459)),
("chr8", (0, 129401213)),
("chr9", (0, 124595110)),
("chr10", (0, 130694993)),
("chr11", (0, 122082543)),
("chr12", (0, 120129022)),
("chr13", (0, 120421639)),
("chr14", (0, 124902244)),
("chr15", (0, 104043685)),
("chr16", (0, 98207768)),
("chr17", (0, 94987271)),
("chr18", (0, 90702639)),
("chr19", (0, 61431566)),
("chrM", (0, 16299)),
("chrX", (0, 171031299)),
("chrY", (0, 91744698)),
("chr1_GL456210_random", (0, 169725)),
("chr1_GL456211_random", (0, 241735)),
("chr1_GL456212_random", (0, 153618)),
("chr1_GL456213_random", (0, 39340)),
("chr1_GL456221_random", (0, 206961)),
("chr4_GL456216_random", (0, 66673)),
("chr4_GL456350_random", (0, 227966)),
("chr4_JH584292_random", (0, 14945)),
("chr4_JH584293_random", (0, 207968)),
("chr4_JH584294_random", (0, 191905)),
("chr4_JH584295_random", (0, 1976)),
("chr5_GL456354_random", (0, 195993)),
("chr5_JH584296_random", (0, 199368)),
("chr5_JH584297_random", (0, 205776)),
("chr5_JH584298_random", (0, 184189)),
("chr5_JH584299_random", (0, 953012)),
("chr7_GL456219_random", (0, 175968)),
("chrUn_GL456239", (0, 40056)),
("chrUn_GL456359", (0, 22974)),
("chrUn_GL456360", (0, 31704)),
("chrUn_GL456366", (0, 47073)),
("chrUn_GL456367", (0, 42057)),
("chrUn_GL456368", (0, 20208)),
("chrUn_GL456370", (0, 26764)),
("chrUn_GL456372", (0, 28664)),
("chrUn_GL456378", (0, 31602)),
("chrUn_GL456379", (0, 72385)),
("chrUn_GL456381", (0, 25871)),
("chrUn_GL456382", (0, 23158)),
("chrUn_GL456383", (0, 38659)),
("chrUn_GL456385", (0, 35240)),
("chrUn_GL456387", (0, 24685)),
("chrUn_GL456389", (0, 28772)),
("chrUn_GL456390", (0, 24668)),
("chrUn_GL456392", (0, 23629)),
("chrUn_GL456393", (0, 55711)),
("chrUn_GL456394", (0, 24323)),
("chrUn_GL456396", (0, 21240)),
("chrUn_JH584304", (0, 114452)),
("chrX_GL456233_random", (0, 336933)),
("chrY_JH584300_random", (0, 182347)),
("chrY_JH584301_random", (0, 259875)),
("chrY_JH584302_random", (0, 155838)),
("chrY_JH584303_random", (0, 158099)),
)
)
mm10.default = OrderedDict()
for chrom, size in list(mm10.items()):
if "_random" in chrom or "Un_" in chrom:
continue
mm10.default[chrom] = size
mm9 = OrderedDict(
(
("chr1", (0, 197195432)),
("chr2", (0, 181748087)),
("chr3", (0, 159599783)),
("chr4", (0, 155630120)),
("chr5", (0, 152537259)),
("chr6", (0, 149517037)),
("chr7", (0, 152524553)),
("chr8", (0, 131738871)),
("chr9", (0, 124076172)),
("chr10", (0, 129993255)),
("chr11", (0, 121843856)),
("chr12", (0, 121257530)),
("chr13", (0, 120284312)),
("chr14", (0, 125194864)),
("chr15", (0, 103494974)),
("chr16", (0, 98319150)),
("chr17", (0, 95272651)),
("chr18", (0, 90772031)),
("chr19", (0, 61342430)),
("chrX", (0, 166650296)),
("chrY", (0, 15902555)),
("chrM", (0, 16299)),
("chr13_random", (0, 400311)),
("chr16_random", (0, 3994)),
("chr17_random", (0, 628739)),
("chr1_random", (0, 1231697)),
("chr3_random", (0, 41899)),
("chr4_random", (0, 160594)),
("chr5_random", (0, 357350)),
("chr7_random", (0, 362490)),
("chr8_random", (0, 849593)),
("chr9_random", (0, 449403)),
("chrUn_random", (0, 5900358)),
("chrX_random", (0, 1785075)),
("chrY_random", (0, 58682461)),
)
)
mm9.default = OrderedDict()
for chrom, size in list(mm9.items()):
if "_random" in chrom:
continue
if chrom == "chrM":
continue
mm9.default[chrom] = size
hg18 = OrderedDict(
(
("chr1", (0, 247249719)),
("chr2", (0, 242951149)),
("chr3", (0, 199501827)),
("chr4", (0, 191273063)),
("chr5", (0, 180857866)),
("chr6", (0, 170899992)),
("chr7", (0, 158821424)),
("chr8", (0, 146274826)),
("chr9", (0, 140273252)),
("chr10", (0, 135374737)),
("chr11", (0, 134452384)),
("chr12", (0, 132349534)),
("chr13", (0, 114142980)),
("chr14", (0, 106368585)),
("chr15", (0, 100338915)),
("chr16", (0, 88827254)),
("chr17", (0, 78774742)),
("chr18", (0, 76117153)),
("chr19", (0, 63811651)),
("chr20", (0, 62435964)),
("chr21", (0, 46944323)),
("chr22", (0, 49691432)),
("chrX", (0, 154913754)),
("chrY", (0, 57772954)),
("chrM", (0, 16571)),
("chr10_random", (0, 113275)),
("chr11_random", (0, 215294)),
("chr13_random", (0, 186858)),
("chr15_random", (0, 784346)),
("chr16_random", (0, 105485)),
("chr17_random", (0, 2617613)),
("chr18_random", (0, 4262)),
("chr19_random", (0, 301858)),
("chr1_random", (0, 1663265)),
("chr21_random", (0, 1679693)),
("chr22_h2_hap1", (0, 63661)),
("chr22_random", (0, 257318)),
("chr2_random", (0, 185571)),
("chr3_random", (0, 749256)),
("chr4_random", (0, 842648)),
("chr5_h2_hap1", (0, 1794870)),
("chr5_random", (0, 143687)),
("chr6_cox_hap1", (0, 4731698)),
("chr6_qbl_hap2", (0, 4565931)),
("chr6_random", (0, 1875562)),
("chr7_random", (0, 549659)),
("chr8_random", (0, 943810)),
("chr9_random", (0, 1146434)),
("chrX_random", (0, 1719168)),
)
)
hg18.default = OrderedDict()
for chrom, size in list(hg18.items()):
if "_" in chrom:
continue
if chrom == "chrM":
continue
hg18.default[chrom] = size
hg19 = OrderedDict(
(
("chr1", (0, 249250621)),
("chr2", (0, 243199373)),
("chr3", (0, 198022430)),
("chr4", (0, 191154276)),
("chr5", (0, 180915260)),
("chr6", (0, 171115067)),
("chr7", (0, 159138663)),
("chr8", (0, 146364022)),
("chr9", (0, 141213431)),
("chr10", (0, 135534747)),
("chr11", (0, 135006516)),
("chr12", (0, 133851895)),
("chr13", (0, 115169878)),
("chr14", (0, 107349540)),
("chr15", (0, 102531392)),
("chr16", (0, 90354753)),
("chr17", (0, 81195210)),
("chr18", (0, 78077248)),
("chr19", (0, 59128983)),
("chr20", (0, 63025520)),
("chr21", (0, 48129895)),
("chr22", (0, 51304566)),
("chrX", (0, 155270560)),
("chrY", (0, 59373566)),
("chrM", (0, 16571)),
("chr6_ssto_hap7", (0, 4928567)),
("chr6_mcf_hap5", (0, 4833398)),
("chr6_cox_hap2", (0, 4795371)),
("chr6_mann_hap4", (0, 4683263)),
("chr6_apd_hap1", (0, 4622290)),
("chr6_qbl_hap6", (0, 4611984)),
("chr6_dbb_hap3", (0, 4610396)),
("chr17_ctg5_hap1", (0, 1680828)),
("chr4_ctg9_hap1", (0, 590426)),
("chr1_gl000192_random", (0, 547496)),
("chrUn_gl000225", (0, 211173)),
("chr4_gl000194_random", (0, 191469)),
("chr4_gl000193_random", (0, 189789)),
("chr9_gl000200_random", (0, 187035)),
("chrUn_gl000222", (0, 186861)),
("chrUn_gl000212", (0, 186858)),
("chr7_gl000195_random", (0, 182896)),
("chrUn_gl000223", (0, 180455)),
("chrUn_gl000224", (0, 179693)),
("chrUn_gl000219", (0, 179198)),
("chr17_gl000205_random", (0, 174588)),
("chrUn_gl000215", (0, 172545)),
("chrUn_gl000216", (0, 172294)),
("chrUn_gl000217", (0, 172149)),
("chr9_gl000199_random", (0, 169874)),
("chrUn_gl000211", (0, 166566)),
("chrUn_gl000213", (0, 164239)),
("chrUn_gl000220", (0, 161802)),
("chrUn_gl000218", (0, 161147)),
("chr19_gl000209_random", (0, 159169)),
("chrUn_gl000221", (0, 155397)),
("chrUn_gl000214", (0, 137718)),
("chrUn_gl000228", (0, 129120)),
("chrUn_gl000227", (0, 128374)),
("chr1_gl000191_random", (0, 106433)),
("chr19_gl000208_random", (0, 92689)),
("chr9_gl000198_random", (0, 90085)),
("chr17_gl000204_random", (0, 81310)),
("chrUn_gl000233", (0, 45941)),
("chrUn_gl000237", (0, 45867)),
("chrUn_gl000230", (0, 43691)),
("chrUn_gl000242", (0, 43523)),
("chrUn_gl000243", (0, 43341)),
("chrUn_gl000241", (0, 42152)),
("chrUn_gl000236", (0, 41934)),
("chrUn_gl000240", (0, 41933)),
("chr17_gl000206_random", (0, 41001)),
("chrUn_gl000232", (0, 40652)),
("chrUn_gl000234", (0, 40531)),
("chr11_gl000202_random", (0, 40103)),
("chrUn_gl000238", (0, 39939)),
("chrUn_gl000244", (0, 39929)),
("chrUn_gl000248", (0, 39786)),
("chr8_gl000196_random", (0, 38914)),
("chrUn_gl000249", (0, 38502)),
("chrUn_gl000246", (0, 38154)),
("chr17_gl000203_random", (0, 37498)),
("chr8_gl000197_random", (0, 37175)),
("chrUn_gl000245", (0, 36651)),
("chrUn_gl000247", (0, 36422)),
("chr9_gl000201_random", (0, 36148)),
("chrUn_gl000235", (0, 34474)),
("chrUn_gl000239", (0, 33824)),
("chr21_gl000210_random", (0, 27682)),
("chrUn_gl000231", (0, 27386)),
("chrUn_gl000229", (0, 19913)),
("chrUn_gl000226", (0, 15008)),
("chr18_gl000207_random", (0, 4262)),
)
)
hg19.default = OrderedDict()
for chrom, size in list(hg19.items()):
if "_" in chrom:
continue
if chrom == "chrM":
continue
hg19.default[chrom] = size
hg38 = OrderedDict(
(
("chr1", (0, 248956422)),
("chr2", (0, 242193529)),
("chr3", (0, 198295559)),
("chr4", (0, 190214555)),
("chr5", (0, 181538259)),
("chr6", (0, 170805979)),
("chr7", (0, 159345973)),
("chrX", (0, 156040895)),
("chr8", (0, 145138636)),
("chr9", (0, 138394717)),
("chr11", (0, 135086622)),
("chr10", (0, 133797422)),
("chr12", (0, 133275309)),
("chr13", (0, 114364328)),
("chr14", (0, 107043718)),
("chr15", (0, 101991189)),
("chr16", (0, 90338345)),
("chr17", (0, 83257441)),
("chr18", (0, 80373285)),
("chr20", (0, 64444167)),
("chr19", (0, 58617616)),
("chrY", (0, 57227415)),
("chr22", (0, 50818468)),
("chr21", (0, 46709983)),
("chr15_KI270905v1_alt", (0, 5161414)),
("chr6_GL000256v2_alt", (0, 4929269)),
("chr6_GL000254v2_alt", (0, 4827813)),
("chr6_GL000251v2_alt", (0, 4795265)),
("chr6_GL000253v2_alt", (0, 4677643)),
("chr6_GL000250v2_alt", (0, 4672374)),
("chr6_GL000255v2_alt", (0, 4606388)),
("chr6_GL000252v2_alt", (0, 4604811)),
("chr17_KI270857v1_alt", (0, 2877074)),
("chr16_KI270853v1_alt", (0, 2659700)),
("chr16_KI270728v1_random", (0, 1872759)),
("chr17_GL000258v2_alt", (0, 1821992)),
("chr5_GL339449v2_alt", (0, 1612928)),
("chr14_KI270847v1_alt", (0, 1511111)),
("chr17_KI270908v1_alt", (0, 1423190)),
("chr14_KI270846v1_alt", (0, 1351393)),
("chr5_KI270897v1_alt", (0, 1144418)),
("chr7_KI270803v1_alt", (0, 1111570)),
("chr19_GL949749v2_alt", (0, 1091841)),
("chr19_KI270938v1_alt", (0, 1066800)),
("chr19_GL949750v2_alt", (0, 1066390)),
("chr19_GL949748v2_alt", (0, 1064304)),
("chr19_GL949751v2_alt", (0, 1002683)),
("chr19_GL949746v1_alt", (0, 987716)),
("chr19_GL949752v1_alt", (0, 987100)),
("chr8_KI270821v1_alt", (0, 985506)),
("chr1_KI270763v1_alt", (0, 911658)),
("chr6_KI270801v1_alt", (0, 870480)),
("chr19_GL949753v2_alt", (0, 796479)),
("chr19_GL949747v2_alt", (0, 729520)),
("chr8_KI270822v1_alt", (0, 624492)),
("chr4_GL000257v2_alt", (0, 586476)),
("chr12_KI270904v1_alt", (0, 572349)),
("chr4_KI270925v1_alt", (0, 555799)),
("chr15_KI270852v1_alt", (0, 478999)),
("chr15_KI270727v1_random", (0, 448248)),
("chr9_KI270823v1_alt", (0, 439082)),
("chr15_KI270850v1_alt", (0, 430880)),
("chr1_KI270759v1_alt", (0, 425601)),
("chr12_GL877876v1_alt", (0, 408271)),
("chrUn_KI270442v1", (0, 392061)),
("chr17_KI270862v1_alt", (0, 391357)),
("chr15_GL383555v2_alt", (0, 388773)),
("chr19_GL383573v1_alt", (0, 385657)),
("chr4_KI270896v1_alt", (0, 378547)),
("chr4_GL383528v1_alt", (0, 376187)),
("chr17_GL383563v3_alt", (0, 375691)),
("chr8_KI270810v1_alt", (0, 374415)),
("chr1_GL383520v2_alt", (0, 366580)),
("chr1_KI270762v1_alt", (0, 354444)),
("chr15_KI270848v1_alt", (0, 327382)),
("chr17_KI270909v1_alt", (0, 325800)),
("chr14_KI270844v1_alt", (0, 322166)),
("chr8_KI270900v1_alt", (0, 318687)),
("chr10_GL383546v1_alt", (0, 309802)),
("chr13_KI270838v1_alt", (0, 306913)),
("chr8_KI270816v1_alt", (0, 305841)),
("chr22_KI270879v1_alt", (0, 304135)),
("chr8_KI270813v1_alt", (0, 300230)),
("chr11_KI270831v1_alt", (0, 296895)),
("chr15_GL383554v1_alt", (0, 296527)),
("chr8_KI270811v1_alt", (0, 292436)),
("chr18_GL383567v1_alt", (0, 289831)),
("chrX_KI270880v1_alt", (0, 284869)),
("chr8_KI270812v1_alt", (0, 282736)),
("chr19_KI270921v1_alt", (0, 282224)),
("chr17_KI270729v1_random", (0, 280839)),
("chr17_JH159146v1_alt", (0, 278131)),
("chrX_KI270913v1_alt", (0, 274009)),
("chr6_KI270798v1_alt", (0, 271782)),
("chr7_KI270808v1_alt", (0, 271455)),
("chr22_KI270876v1_alt", (0, 263666)),
("chr15_KI270851v1_alt", (0, 263054)),
("chr22_KI270875v1_alt", (0, 259914)),
("chr1_KI270766v1_alt", (0, 256271)),
("chr19_KI270882v1_alt", (0, 248807)),
("chr3_KI270778v1_alt", (0, 248252)),
("chr15_KI270849v1_alt", (0, 244917)),
("chr4_KI270786v1_alt", (0, 244096)),
("chr12_KI270835v1_alt", (0, 238139)),
("chr17_KI270858v1_alt", (0, 235827)),
("chr19_KI270867v1_alt", (0, 233762)),
("chr16_KI270855v1_alt", (0, 232857)),
("chr8_KI270926v1_alt", (0, 229282)),
("chr5_GL949742v1_alt", (0, 226852)),
("chr3_KI270780v1_alt", (0, 224108)),
("chr17_GL383565v1_alt", (0, 223995)),
("chr2_KI270774v1_alt", (0, 223625)),
("chr4_KI270790v1_alt", (0, 220246)),
("chr11_KI270927v1_alt", (0, 218612)),
("chr19_KI270932v1_alt", (0, 215732)),
("chr11_KI270903v1_alt", (0, 214625)),
("chr2_KI270894v1_alt", (0, 214158)),
("chr14_GL000225v1_random", (0, 211173)),
("chrUn_KI270743v1", (0, 210658)),
("chr11_KI270832v1_alt", (0, 210133)),
("chr7_KI270805v1_alt", (0, 209988)),
("chr4_GL000008v2_random", (0, 209709)),
("chr7_KI270809v1_alt", (0, 209586)),
("chr19_KI270887v1_alt", (0, 209512)),
("chr4_KI270789v1_alt", (0, 205944)),
("chr3_KI270779v1_alt", (0, 205312)),
("chr19_KI270914v1_alt", (0, 205194)),
("chr19_KI270886v1_alt", (0, 204239)),
("chr11_KI270829v1_alt", (0, 204059)),
("chr14_GL000009v2_random", (0, 201709)),
("chr21_GL383579v2_alt", (0, 201197)),
("chr11_JH159136v1_alt", (0, 200998)),
("chr19_KI270930v1_alt", (0, 200773)),
("chrUn_KI270747v1", (0, 198735)),
("chr18_GL383571v1_alt", (0, 198278)),
("chr19_KI270920v1_alt", (0, 198005)),
("chr6_KI270797v1_alt", (0, 197536)),
("chr3_KI270935v1_alt", (0, 197351)),
("chr17_KI270861v1_alt", (0, 196688)),
("chr15_KI270906v1_alt", (0, 196384)),
("chr5_KI270791v1_alt", (0, 195710)),
("chr14_KI270722v1_random", (0, 194050)),
("chr16_GL383556v1_alt", (0, 192462)),
("chr13_KI270840v1_alt", (0, 191684)),
("chr14_GL000194v1_random", (0, 191469)),
("chr11_JH159137v1_alt", (0, 191409)),
("chr19_KI270917v1_alt", (0, 190932)),
("chr7_KI270899v1_alt", (0, 190869)),
("chr19_KI270923v1_alt", (0, 189352)),
("chr10_KI270825v1_alt", (0, 188315)),
("chr19_GL383576v1_alt", (0, 188024)),
("chr19_KI270922v1_alt", (0, 187935)),
("chrUn_KI270742v1", (0, 186739)),
("chr22_KI270878v1_alt", (0, 186262)),
("chr19_KI270929v1_alt", (0, 186203)),
("chr11_KI270826v1_alt", (0, 186169)),
("chr6_KB021644v2_alt", (0, 185823)),
("chr17_GL000205v2_random", (0, 185591)),
("chr1_KI270765v1_alt", (0, 185285)),
("chr19_KI270916v1_alt", (0, 184516)),
("chr19_KI270890v1_alt", (0, 184499)),
("chr3_KI270784v1_alt", (0, 184404)),
("chr12_GL383551v1_alt", (0, 184319)),
("chr20_KI270870v1_alt", (0, 183433)),
("chrUn_GL000195v1", (0, 182896)),
("chr1_GL383518v1_alt", (0, 182439)),
("chr22_KI270736v1_random", (0, 181920)),
("chr10_KI270824v1_alt", (0, 181496)),
("chr14_KI270845v1_alt", (0, 180703)),
("chr3_GL383526v1_alt", (0, 180671)),
("chr13_KI270839v1_alt", (0, 180306)),
("chr22_KI270733v1_random", (0, 179772)),
("chrUn_GL000224v1", (0, 179693)),
("chr10_GL383545v1_alt", (0, 179254)),
("chrUn_GL000219v1", (0, 179198)),
("chr5_KI270792v1_alt", (0, 179043)),
("chr17_KI270860v1_alt", (0, 178921)),
("chr19_GL000209v2_alt", (0, 177381)),
("chr11_KI270830v1_alt", (0, 177092)),
("chr9_KI270719v1_random", (0, 176845)),
("chrUn_GL000216v2", (0, 176608)),
("chr22_KI270928v1_alt", (0, 176103)),
("chr1_KI270712v1_random", (0, 176043)),
("chr6_KI270800v1_alt", (0, 175808)),
("chr1_KI270706v1_random", (0, 175055)),
("chr2_KI270776v1_alt", (0, 174166)),
("chr18_KI270912v1_alt", (0, 174061)),
("chr3_KI270777v1_alt", (0, 173649)),
("chr5_GL383531v1_alt", (0, 173459)),
("chr3_JH636055v2_alt", (0, 173151)),
("chr14_KI270725v1_random", (0, 172810)),
("chr5_KI270796v1_alt", (0, 172708)),
("chr9_GL383541v1_alt", (0, 171286)),
("chr19_KI270885v1_alt", (0, 171027)),
("chr19_KI270919v1_alt", (0, 170701)),
("chr19_KI270889v1_alt", (0, 170698)),
("chr19_KI270891v1_alt", (0, 170680)),
("chr19_KI270915v1_alt", (0, 170665)),
("chr19_KI270933v1_alt", (0, 170537)),
("chr19_KI270883v1_alt", (0, 170399)),
("chr19_GL383575v2_alt", (0, 170222)),
("chr19_KI270931v1_alt", (0, 170148)),
("chr12_GL383550v2_alt", (0, 169178)),
("chr13_KI270841v1_alt", (0, 169134)),
("chrUn_KI270744v1", (0, 168472)),
("chr18_KI270863v1_alt", (0, 167999)),
("chr18_GL383569v1_alt", (0, 167950)),
("chr12_GL877875v1_alt", (0, 167313)),
("chr21_KI270874v1_alt", (0, 166743)),
("chr3_KI270924v1_alt", (0, 166540)),
("chr1_KI270761v1_alt", (0, 165834)),
("chr3_KI270937v1_alt", (0, 165607)),
("chr22_KI270734v1_random", (0, 165050)),
("chr18_GL383570v1_alt", (0, 164789)),
("chr5_KI270794v1_alt", (0, 164558)),
("chr4_GL383527v1_alt", (0, 164536)),
("chrUn_GL000213v1", (0, 164239)),
("chr3_KI270936v1_alt", (0, 164170)),
("chr3_KI270934v1_alt", (0, 163458)),
("chr9_GL383539v1_alt", (0, 162988)),
("chr3_KI270895v1_alt", (0, 162896)),
("chr22_GL383582v2_alt", (0, 162811)),
("chr3_KI270782v1_alt", (0, 162429)),
("chr1_KI270892v1_alt", (0, 162212)),
("chrUn_GL000220v1", (0, 161802)),
("chr2_KI270767v1_alt", (0, 161578)),
("chr2_KI270715v1_random", (0, 161471)),
("chr2_KI270893v1_alt", (0, 161218)),
("chrUn_GL000218v1", (0, 161147)),
("chr18_GL383572v1_alt", (0, 159547)),
("chr8_KI270817v1_alt", (0, 158983)),
("chr4_KI270788v1_alt", (0, 158965)),
("chrUn_KI270749v1", (0, 158759)),
("chr7_KI270806v1_alt", (0, 158166)),
("chr7_KI270804v1_alt", (0, 157952)),
("chr18_KI270911v1_alt", (0, 157710)),
("chrUn_KI270741v1", (0, 157432)),
("chr17_KI270910v1_alt", (0, 157099)),
("chr19_KI270884v1_alt", (0, 157053)),
("chr19_GL383574v1_alt", (0, 155864)),
("chr19_KI270888v1_alt", (0, 155532)),
("chr3_GL000221v1_random", (0, 155397)),
("chr11_GL383547v1_alt", (0, 154407)),
("chr2_KI270716v1_random", (0, 153799)),
("chr12_GL383553v2_alt", (0, 152874)),
("chr6_KI270799v1_alt", (0, 152148)),
("chr22_KI270731v1_random", (0, 150754)),
("chrUn_KI270751v1", (0, 150742)),
("chrUn_KI270750v1", (0, 148850)),
("chr8_KI270818v1_alt", (0, 145606)),
("chrX_KI270881v1_alt", (0, 144206)),
("chr21_KI270873v1_alt", (0, 143900)),
("chr2_GL383521v1_alt", (0, 143390)),
("chr8_KI270814v1_alt", (0, 141812)),
("chr12_GL383552v1_alt", (0, 138655)),
("chrUn_KI270519v1", (0, 138126)),
("chr2_KI270775v1_alt", (0, 138019)),
("chr17_KI270907v1_alt", (0, 137721)),
("chrUn_GL000214v1", (0, 137718)),
("chr8_KI270901v1_alt", (0, 136959)),
("chr2_KI270770v1_alt", (0, 136240)),
("chr16_KI270854v1_alt", (0, 134193)),
("chr8_KI270819v1_alt", (0, 133535)),
("chr17_GL383564v2_alt", (0, 133151)),
("chr2_KI270772v1_alt", (0, 133041)),
("chr8_KI270815v1_alt", (0, 132244)),
("chr5_KI270795v1_alt", (0, 131892)),
("chr5_KI270898v1_alt", (0, 130957)),
("chr20_GL383577v2_alt", (0, 128386)),
("chr1_KI270708v1_random", (0, 127682)),
("chr7_KI270807v1_alt", (0, 126434)),
("chr5_KI270793v1_alt", (0, 126136)),
("chr6_GL383533v1_alt", (0, 124736)),
("chr2_GL383522v1_alt", (0, 123821)),
("chr19_KI270918v1_alt", (0, 123111)),
("chr12_GL383549v1_alt", (0, 120804)),
("chr2_KI270769v1_alt", (0, 120616)),
("chr4_KI270785v1_alt", (0, 119912)),
("chr12_KI270834v1_alt", (0, 119498)),
("chr7_GL383534v2_alt", (0, 119183)),
("chr20_KI270869v1_alt", (0, 118774)),
("chr21_GL383581v2_alt", (0, 116689)),
("chr3_KI270781v1_alt", (0, 113034)),
("chr17_KI270730v1_random", (0, 112551)),
("chrUn_KI270438v1", (0, 112505)),
("chr4_KI270787v1_alt", (0, 111943)),
("chr18_KI270864v1_alt", (0, 111737)),
("chr2_KI270771v1_alt", (0, 110395)),
("chr1_GL383519v1_alt", (0, 110268)),
("chr2_KI270768v1_alt", (0, 110099)),
("chr1_KI270760v1_alt", (0, 109528)),
("chr3_KI270783v1_alt", (0, 109187)),
("chr17_KI270859v1_alt", (0, 108763)),
("chr11_KI270902v1_alt", (0, 106711)),
("chr18_GL383568v1_alt", (0, 104552)),
("chr22_KI270737v1_random", (0, 103838)),
("chr13_KI270843v1_alt", (0, 103832)),
("chr22_KI270877v1_alt", (0, 101331)),
("chr5_GL383530v1_alt", (0, 101241)),
("chr11_KI270721v1_random", (0, 100316)),
("chr22_KI270738v1_random", (0, 99375)),
("chr22_GL383583v2_alt", (0, 96924)),
("chr2_GL582966v2_alt", (0, 96131)),
("chrUn_KI270748v1", (0, 93321)),
("chrUn_KI270435v1", (0, 92983)),
("chr5_GL000208v1_random", (0, 92689)),
("chrUn_KI270538v1", (0, 91309)),
("chr17_GL383566v1_alt", (0, 90219)),
("chr16_GL383557v1_alt", (0, 89672)),
("chr17_JH159148v1_alt", (0, 88070)),
("chr5_GL383532v1_alt", (0, 82728)),
("chr21_KI270872v1_alt", (0, 82692)),
("chrUn_KI270756v1", (0, 79590)),
("chr6_KI270758v1_alt", (0, 76752)),
("chr12_KI270833v1_alt", (0, 76061)),
("chr6_KI270802v1_alt", (0, 75005)),
("chr21_GL383580v2_alt", (0, 74653)),
("chr22_KB663609v1_alt", (0, 74013)),
("chr22_KI270739v1_random", (0, 73985)),
("chr9_GL383540v1_alt", (0, 71551)),
("chrUn_KI270757v1", (0, 71251)),
("chr2_KI270773v1_alt", (0, 70887)),
("chr17_JH159147v1_alt", (0, 70345)),
("chr11_KI270827v1_alt", (0, 67707)),
("chr1_KI270709v1_random", (0, 66860)),
("chrUn_KI270746v1", (0, 66486)),
("chr16_KI270856v1_alt", (0, 63982)),
("chr21_GL383578v2_alt", (0, 63917)),
("chrUn_KI270753v1", (0, 62944)),
("chr19_KI270868v1_alt", (0, 61734)),
("chr9_GL383542v1_alt", (0, 60032)),
("chr20_KI270871v1_alt", (0, 58661)),
("chr12_KI270836v1_alt", (0, 56134)),
("chr19_KI270865v1_alt", (0, 52969)),
("chr1_KI270764v1_alt", (0, 50258)),
("chrUn_KI270589v1", (0, 44474)),
("chr14_KI270726v1_random", (0, 43739)),
("chr19_KI270866v1_alt", (0, 43156)),
("chr22_KI270735v1_random", (0, 42811)),
("chr1_KI270711v1_random", (0, 42210)),
("chrUn_KI270745v1", (0, 41891)),
("chr1_KI270714v1_random", (0, 41717)),
("chr22_KI270732v1_random", (0, 41543)),
("chr1_KI270713v1_random", (0, 40745)),
("chrUn_KI270754v1", (0, 40191)),
("chr1_KI270710v1_random", (0, 40176)),
("chr12_KI270837v1_alt", (0, 40090)),
("chr9_KI270717v1_random", (0, 40062)),
("chr14_KI270724v1_random", (0, 39555)),
("chr9_KI270720v1_random", (0, 39050)),
("chr14_KI270723v1_random", (0, 38115)),
("chr9_KI270718v1_random", (0, 38054)),
("chrUn_KI270317v1", (0, 37690)),
("chr13_KI270842v1_alt", (0, 37287)),
("chrY_KI270740v1_random", (0, 37240)),
("chrUn_KI270755v1", (0, 36723)),
("chr8_KI270820v1_alt", (0, 36640)),
("chr1_KI270707v1_random", (0, 32032)),
("chrUn_KI270579v1", (0, 31033)),
("chrUn_KI270752v1", (0, 27745)),
("chrUn_KI270512v1", (0, 22689)),
("chrUn_KI270322v1", (0, 21476)),
("chrM", (0, 16569)),
("chrUn_GL000226v1", (0, 15008)),
("chrUn_KI270311v1", (0, 12399)),
("chrUn_KI270366v1", (0, 8320)),
("chrUn_KI270511v1", (0, 8127)),
("chrUn_KI270448v1", (0, 7992)),
("chrUn_KI270521v1", (0, 7642)),
("chrUn_KI270581v1", (0, 7046)),
("chrUn_KI270582v1", (0, 6504)),
("chrUn_KI270515v1", (0, 6361)),
("chrUn_KI270588v1", (0, 6158)),
("chrUn_KI270591v1", (0, 5796)),
("chrUn_KI270522v1", (0, 5674)),
("chrUn_KI270507v1", (0, 5353)),
("chrUn_KI270590v1", (0, 4685)),
("chrUn_KI270584v1", (0, 4513)),
("chrUn_KI270320v1", (0, 4416)),
("chrUn_KI270382v1", (0, 4215)),
("chrUn_KI270468v1", (0, 4055)),
("chrUn_KI270467v1", (0, 3920)),
("chrUn_KI270362v1", (0, 3530)),
("chrUn_KI270517v1", (0, 3253)),
("chrUn_KI270593v1", (0, 3041)),
("chrUn_KI270528v1", (0, 2983)),
("chrUn_KI270587v1", (0, 2969)),
("chrUn_KI270364v1", (0, 2855)),
("chrUn_KI270371v1", (0, 2805)),
("chrUn_KI270333v1", (0, 2699)),
("chrUn_KI270374v1", (0, 2656)),
("chrUn_KI270411v1", (0, 2646)),
("chrUn_KI270414v1", (0, 2489)),
("chrUn_KI270510v1", (0, 2415)),
("chrUn_KI270390v1", (0, 2387)),
("chrUn_KI270375v1", (0, 2378)),
("chrUn_KI270420v1", (0, 2321)),
("chrUn_KI270509v1", (0, 2318)),
("chrUn_KI270315v1", (0, 2276)),
("chrUn_KI270302v1", (0, 2274)),
("chrUn_KI270518v1", (0, 2186)),
("chrUn_KI270530v1", (0, 2168)),
("chrUn_KI270304v1", (0, 2165)),
("chrUn_KI270418v1", (0, 2145)),
("chrUn_KI270424v1", (0, 2140)),
("chrUn_KI270417v1", (0, 2043)),
("chrUn_KI270508v1", (0, 1951)),
("chrUn_KI270303v1", (0, 1942)),
("chrUn_KI270381v1", (0, 1930)),
("chrUn_KI270529v1", (0, 1899)),
("chrUn_KI270425v1", (0, 1884)),
("chrUn_KI270396v1", (0, 1880)),
("chrUn_KI270363v1", (0, 1803)),
("chrUn_KI270386v1", (0, 1788)),
("chrUn_KI270465v1", (0, 1774)),
("chrUn_KI270383v1", (0, 1750)),
("chrUn_KI270384v1", (0, 1658)),
("chrUn_KI270330v1", (0, 1652)),
("chrUn_KI270372v1", (0, 1650)),
("chrUn_KI270548v1", (0, 1599)),
("chrUn_KI270580v1", (0, 1553)),
("chrUn_KI270387v1", (0, 1537)),
("chrUn_KI270391v1", (0, 1484)),
("chrUn_KI270305v1", (0, 1472)),
("chrUn_KI270373v1", (0, 1451)),
("chrUn_KI270422v1", (0, 1445)),
("chrUn_KI270316v1", (0, 1444)),
("chrUn_KI270338v1", (0, 1428)),
("chrUn_KI270340v1", (0, 1428)),
("chrUn_KI270583v1", (0, 1400)),
("chrUn_KI270334v1", (0, 1368)),
("chrUn_KI270429v1", (0, 1361)),
("chrUn_KI270393v1", (0, 1308)),
("chrUn_KI270516v1", (0, 1300)),
("chrUn_KI270389v1", (0, 1298)),
("chrUn_KI270466v1", (0, 1233)),
("chrUn_KI270388v1", (0, 1216)),
("chrUn_KI270544v1", (0, 1202)),
("chrUn_KI270310v1", (0, 1201)),
("chrUn_KI270412v1", (0, 1179)),
("chrUn_KI270395v1", (0, 1143)),
("chrUn_KI270376v1", (0, 1136)),
("chrUn_KI270337v1", (0, 1121)),
("chrUn_KI270335v1", (0, 1048)),
("chrUn_KI270378v1", (0, 1048)),
("chrUn_KI270379v1", (0, 1045)),
("chrUn_KI270329v1", (0, 1040)),
("chrUn_KI270419v1", (0, 1029)),
("chrUn_KI270336v1", (0, 1026)),
("chrUn_KI270312v1", (0, 998)),
("chrUn_KI270539v1", (0, 993)),
("chrUn_KI270385v1", (0, 990)),
("chrUn_KI270423v1", (0, 981)),
("chrUn_KI270392v1", (0, 971)),
("chrUn_KI270394v1", (0, 970)),
)
)
hg38.default = OrderedDict()
for chrom, size in hg38.items():
if "_" in chrom:
continue
if chrom == "chrM":
continue
hg38.default[chrom] = size
pybedtools-0.9.0/pybedtools/helpers.py 0000664 0000000 0000000 00000063463 14173526301 0020122 0 ustar 00root root 0000000 0000000 import sys
import os
import gzip
import tempfile
import subprocess
import random
import string
import glob
import struct
import atexit
import six
import pysam
import re
from six.moves import urllib
try: # Use genomepy to determine chrom sizes if it is installed
import genomepy
except ImportError:
pass
from . import cbedtools
from . import settings
from . import filenames
from . import genome_registry
from .logger import logger
from .cbedtools import create_interval_from_list
BUFSIZE = -1
_tags = {}
def set_bedtools_path(path=""):
"""
Explicitly set path to `BEDTools` installation dir.
If BEDTools is not available on your system path, specify the path to the
dir containing the BEDTools executables (intersectBed, subtractBed, etc)
with this function.
To reset and use the default system path, call this function with no
arguments or use path="".
"""
from . import paths
paths._set_bedtools_path(path)
def get_bedtools_path():
"""
Returns the currently-set path to bedtools
"""
from . import paths
return paths._get_bedtools_path()
def set_R_path(path=""):
"""
Explicitly set path to `R` installation dir.
If R is not available on the path, then it can be explicitly
specified here.
Use path="" to reset to default system path.
"""
from . import paths
paths._set_R_path(path)
def _check_for_bedtools(force_check=False, verbose=False, override=None):
"""
Checks installation as well as version (based on whether or not "bedtools
intersect" works, or just "intersectBed")
"""
if settings._bedtools_installed and not force_check:
return True
if (len(settings.bedtools_version) == 0) or force_check:
try:
v = (
subprocess.check_output(
[os.path.join(settings._bedtools_path, "bedtools"), "--version"]
)
.decode("utf-8")
.rstrip()
)
if verbose:
print("Found bedtools version '%s'" % v)
settings._bedtools_installed = True
# Override, used for testing
if override is not None:
v = override
# To allow more complicated versions as found in Linux distributions, e.g.:
# bedtools v2.26.0
# bedtools debian/2.28.0+dfsg-2-dirty
m = re.search("^bedtools [^0-9]*([0-9][0-9.]*)", v)
if not m:
raise ValueError('Cannot identify version number from "{}"'.format(v))
vv = m.group(1)
settings.bedtools_version = [int(i) for i in vv.split(".")]
settings._v_2_27_plus = (
settings.bedtools_version[0] >= 2 and settings.bedtools_version[1] >= 27
)
settings._v_2_15_plus = (
settings.bedtools_version[0] >= 2 and settings.bedtools_version[1] >= 15
)
except subprocess.CalledProcessError:
if settings._bedtools_path:
add_msg = "(tried path '%s')" % settings._bedtools_path
else:
add_msg = ""
raise OSError(
"Please make sure you have installed BEDTools"
"(https://github.com/arq5x/bedtools) and that "
"it's on the path. %s" % add_msg
)
def _check_for_R():
try:
p = subprocess.Popen(
[os.path.join(settings._R_path, "R"), "--version"],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
settings._R_installed = True
except OSError:
if settings._R_path:
add_msg = "(tried path '%s')" % settings._R_path
else:
add_msg = ""
raise ValueError("Please install R and ensure it is on your path %s" % add_msg)
class Error(Exception):
"""Base class for this module's exceptions"""
pass
class pybedtoolsError(Error):
pass
class BEDToolsError(Error):
def __init__(self, cmd, msg):
self.cmd = str(cmd)
self.msg = str(msg)
def __str__(self):
m = (
"\nCommand was:\n\n\t"
+ self.cmd
+ "\n"
+ "\nError message was:\n"
+ self.msg
)
return m
def isGZIP(fn):
with open(fn, "rb") as f:
start = f.read(3)
if start == b"\x1f\x8b\x08":
return True
return False
def isBGZIP(fn):
"""
Reads a filename to see if it's a BGZIPed file or not.
"""
with open(fn, "rb") as fh:
header_str = fh.read(15)
if len(header_str) < 15:
return False
header = struct.unpack_from("BBBBiBBHBBB", header_str)
id1, id2, cm, flg, mtime, xfl, os_, xlen, si1, si2, slen = header
if (
(id1 == 31)
and (id2 == 139)
and (cm == 8)
and (flg == 4)
and (si1 == 66)
and (si2 == 67)
and (slen == 2)
):
return True
return False
def isBAM(fn):
"""
Returns True if the file is both BGZIPed and the compressed contents have
start with the magic number `BAM\\x01`, or if the file is CRAM format (see
isCRAM()).
"""
# Note: previously we were catching ValueError when trying to open
# a non-BAM with pysam.Samfile. That started segfaulting, so now do it the
# right way with magic number.
with gzip.open(fn, "rb") as in_:
if isBGZIP(fn) and (in_.read(4).decode() == "BAM\x01"):
return True
if isCRAM(fn):
return True
def isCRAM(fn):
"""
Returns True if the file starts with the bytes for the characters "CRAM".
"""
with open(fn, "rb") as in_:
if in_.read(4).decode(errors="ignore") == "CRAM":
return True
def find_tagged(tag):
"""
Returns the bedtool object with tagged with *tag*. Useful for tracking
down bedtools you made previously.
"""
for key, item in _tags.items():
try:
if item._tag == tag:
return item
except AttributeError:
pass
raise ValueError('tag "%s" not found' % tag)
def _flatten_list(x):
nested = True
while nested:
check_again = False
flattened = []
for element in x:
if isinstance(element, list):
flattened.extend(element)
check_again = True
else:
flattened.append(element)
nested = check_again
x = flattened[:]
return x
def set_tempdir(tempdir):
"""
Set the directory for temp files.
Useful for clusters that use a /scratch partition rather than a /tmp dir.
Convenience function to simply set tempfile.tempdir.
"""
if not os.path.exists(tempdir):
errstr = "The tempdir you specified, %s, does not exist" % tempdir
if six.PY2:
raise ValueError(errstr)
raise FileNotFoundError(errstr)
tempfile.tempdir = tempdir
def get_tempdir():
"""
Gets the current tempdir for the module.
"""
return tempfile.gettempdir()
def cleanup(verbose=False, remove_all=False):
"""
Deletes all temp files from the current session (or optionally *all* \
sessions)
If *verbose*, reports what it's doing
If *remove_all*, then ALL files matching "pybedtools.*.tmp" in the temp dir
will be deleted.
"""
if settings.KEEP_TEMPFILES:
return
for fn in filenames.TEMPFILES:
if verbose:
print("removing", fn)
if os.path.exists(fn):
os.unlink(fn)
if remove_all:
fns = glob.glob(os.path.join(get_tempdir(), "pybedtools.*.tmp"))
for fn in fns:
os.unlink(fn)
def _version_2_15_plus_names(prog_name):
if not settings._bedtools_installed:
_check_for_bedtools()
if not settings._v_2_15_plus:
return [prog_name]
try:
prog_name = settings._prog_names[prog_name]
except KeyError:
if prog_name in settings._new_names:
pass
raise BEDToolsError(prog_name, prog_name + "not a recognized BEDTools program")
return [os.path.join(settings._bedtools_path, "bedtools"), prog_name]
def call_bedtools(
cmds,
tmpfn=None,
stdin=None,
check_stderr=None,
decode_output=True,
encode_input=True,
):
"""
Use subprocess.Popen to call BEDTools and catch any errors.
Output goes to *tmpfn*, or, if None, output stays in subprocess.PIPE and
can be iterated over.
*stdin* is an optional file-like object that will be sent to
subprocess.Popen.
Prints some useful help upon getting common errors.
*check_stderr* is a function that takes the stderr string as input and
returns True if it's OK (that is, it's not really an error). This is
needed, e.g., for calling fastaFromBed which will report that it has to
make a .fai for a fasta file.
*decode_output* should be set to False when you are iterating over a BAM
file, where the data represent binary rather than text data.
"""
input_is_stream = stdin is not None
output_is_stream = tmpfn is None
_orig_cmds = cmds[:]
cmds = []
cmds.extend(_version_2_15_plus_names(_orig_cmds[0]))
cmds.extend(_orig_cmds[1:])
try:
# coming from an iterator, sending as iterator
if input_is_stream and output_is_stream:
logger.debug(
"helpers.call_bedtools(): input is stream, output is " "stream"
)
logger.debug("helpers.call_bedtools(): cmds=%s", " ".join(cmds))
p = subprocess.Popen(
cmds,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
stdin=subprocess.PIPE,
bufsize=BUFSIZE,
)
if encode_input:
for line in stdin:
p.stdin.write(line.encode())
else:
for line in stdin:
p.stdin.write(line)
# This is important to prevent deadlocks
p.stdin.close()
if decode_output:
output = (i.decode("UTF-8") for i in p.stdout)
else:
output = (i for i in p.stdout)
stderr = None
# coming from an iterator, writing to file
if input_is_stream and not output_is_stream:
logger.debug("helpers.call_bedtools(): input is stream, output is file")
logger.debug("helpers.call_bedtools(): cmds=%s", " ".join(cmds))
outfile = open(tmpfn, "wb")
p = subprocess.Popen(
cmds,
stdout=outfile,
stderr=subprocess.PIPE,
stdin=subprocess.PIPE,
bufsize=BUFSIZE,
)
if hasattr(stdin, "read"):
stdout, stderr = p.communicate(stdin.read())
else:
for item in stdin:
p.stdin.write(item.encode())
stdout, stderr = p.communicate()
output = tmpfn
outfile.close()
# coming from a file, sending as iterator
if not input_is_stream and output_is_stream:
logger.debug(
"helpers.call_bedtools(): input is filename, " "output is stream"
)
logger.debug("helpers.call_bedtools(): cmds=%s", " ".join(cmds))
p = subprocess.Popen(
cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=BUFSIZE
)
if decode_output:
output = (i.decode("UTF-8") for i in p.stdout)
else:
output = (i for i in p.stdout)
stderr = None
# file-to-file
if not input_is_stream and not output_is_stream:
logger.debug(
"helpers.call_bedtools(): input is filename, output "
"is filename (%s)",
tmpfn,
)
cmds = list(map(str, cmds))
logger.debug("helpers.call_bedtools(): cmds=%s", " ".join(cmds))
outfile = open(tmpfn, "wb")
p = subprocess.Popen(
cmds, stdout=outfile, stderr=subprocess.PIPE, bufsize=BUFSIZE
)
stdout, stderr = p.communicate()
output = tmpfn
outfile.close()
# Check if it's OK using a provided function to check stderr. If it's
# OK, dump it to sys.stderr so it's printed, and reset it to None so we
# don't raise an exception
if check_stderr is not None:
if isinstance(stderr, bytes):
stderr = stderr.decode("UTF_8")
if check_stderr(stderr):
sys.stderr.write(stderr)
stderr = None
if stderr:
# Fix for issue #147. In general, we consider warnings to not be
# fatal, so just show 'em and continue on.
#
# bedtools source has several different ways of showing a warning,
# but they seem to all have "WARNING" in the first 20 or so
# characters
if isinstance(stderr, bytes):
stderr = stderr.decode("UTF_8")
if len(stderr) > 20 and "WARNING" in stderr[:20].upper():
sys.stderr.write(stderr)
else:
raise BEDToolsError(subprocess.list2cmdline(cmds), stderr)
except (OSError, IOError) as err:
print("%s: %s" % (type(err), os.strerror(err.errno)))
print("The command was:\n\n\t%s\n" % subprocess.list2cmdline(cmds))
problems = {
2: (
"* Did you spell the command correctly?",
"* Do you have BEDTools installed and on the path?",
),
13: (
"* Do you have permission to write "
'to the output file ("%s")?' % tmpfn,
),
24: (
"* Too many files open -- please submit "
"a bug report so that this can be fixed",
),
32: (
"* Broken pipe -- if you passed a BedTool object "
"that was created using a generator function, "
"please try saving it to disk first using the "
".saveas() method before calling this bedtools "
"command. See issue #49 for more.",
),
}
print("Things to check:")
print("\n\t" + "\n\t".join(problems[err.errno]))
raise OSError("See above for commands that gave the error")
return output
def _check_sequence_stderr(x):
"""
If stderr created by fastaFromBed starts with 'index file', then don't
consider it an error.
"""
if isinstance(x, bytes):
x = x.decode("UTF-8")
if x.startswith("index file"):
return True
if x.startswith("WARNING"):
return True
return False
def _call_randomintersect(
_self,
other,
iterations,
intersect_kwargs,
shuffle_kwargs,
report_iterations,
debug,
_orig_processes,
):
"""
Helper function that list-ifies the output from randomintersection, s.t.
it can be pickled across a multiprocess Pool.
"""
return list(
_self.randomintersection(
other,
iterations,
intersect_kwargs=intersect_kwargs,
shuffle_kwargs=shuffle_kwargs,
report_iterations=report_iterations,
debug=False,
processes=None,
_orig_processes=_orig_processes,
)
)
def close_or_delete(*args):
"""
Single function that can be used to get rid of a BedTool, whether it's a
streaming or file-based version.
"""
for x in args:
if isinstance(x.fn, six.string_types):
os.unlink(x.fn)
elif hasattr(x.fn, "close"):
x.fn.close()
if hasattr(x.fn, "throw"):
x.fn.throw(StopIteration)
def n_open_fds():
pid = os.getpid()
procs = subprocess.check_output(["lsof", "-w", "-Ff", "-p", str(pid)])
nprocs = 0
for i in procs.splitlines():
if i[1:].isdigit() and i[0] == "f":
nprocs += 1
return nprocs
import re
coord_re = re.compile(
r"""
(?P.+):
(?P\d+)-
(?P\d+)
(?:\[(?P.)\])?""",
re.VERBOSE,
)
def string_to_interval(s):
"""
Convert string of the form "chrom:start-stop" or "chrom:start-stop[strand]"
to an interval.
Assumes zero-based coords.
If it's already an interval, then return it as-is.
"""
if isinstance(s, six.string_types):
m = coord_re.search(s)
if m.group("strand"):
return create_interval_from_list(
[
m.group("chrom"),
m.group("start"),
m.group("stop"),
".",
"0",
m.group("strand"),
]
)
else:
return create_interval_from_list(
[m.group("chrom"), m.group("start"), m.group("stop")]
)
return s
class FisherOutput(object):
def __init__(self, s, **kwargs):
"""
fisher returns text results like::
# Contingency Table
#_________________________________________
# | not in -b | in -b |
# not in -a | 3137160615 | 503 |
# in -a | 100 | 46 |
#_________________________________________
# p-values for fisher's exact test
left right two-tail ratio
1.00000 0.00000 0.00000 2868973.922
"""
if isinstance(s, str):
s = open(s).read()
if hasattr(s, "next"):
s = "".join(i for i in s)
table = {
"not in -a": {"not in -b": None, "in -b": None},
"in -a": {"not in -b": None, "in -b": None},
}
self.text = s
lines = s.splitlines()
for i in lines:
if "not in -a" in i:
_, in_b, not_in_b, _ = i.strip().split("|")
table["not in -a"]["not in -b"] = int(not_in_b)
table["not in -a"]["in -b"] = int(in_b)
if " in -a" in i:
_, in_b, not_in_b, _ = i.strip().split("|")
table["in -a"]["not in -b"] = int(not_in_b)
table["in -a"]["in -b"] = int(in_b)
self.table = table
left, right, two_tail, ratio = lines[-1].split()
self.left_tail = float(left)
self.right_tail = float(right)
self.two_tail = float(two_tail)
self.ratio = float(ratio)
def __str__(self):
return self.text
def __repr__(self):
return "<%s at %s>\n%s" % (self.__class__.__name__, id(self), self.text)
class SplitOutput(object):
def __init__(self, output, **kwargs):
"""
Handles output from bedtools split, which sends a report of files to
stdout. This class parses that list into something more convenient to
use within pybedtools.
Most useful is probably the .bedtools attribute, which is a list of
BedTool objects.
"""
from .bedtool import BedTool
if isinstance(output, str):
output = open(output).read()
if hasattr(output, "next"):
output = "".join(i for i in output)
#: store a copy of the output
self.text = output
#: BedTool objects created from output
self.bedtools = []
#: Filenames that were created from the split
self.files = []
#: number of bases in each file
self.nbases = []
#: number of features in each file
self.counts = []
for line in output.splitlines():
toks = line.split()
self.files.append(toks[0])
self.nbases.append(int(toks[1]))
self.counts.append(int(toks[2]))
self.bedtools.append(BedTool(toks[0]))
def internet_on(timeout=1):
try:
response = urllib.request.urlopen("http://genome.ucsc.edu", timeout=timeout)
return True
except urllib.error.URLError as err:
pass
return False
def get_chromsizes_from_ucsc(
genome,
saveas=None,
mysql="mysql",
fetchchromsizes="fetchChromSizes",
timeout=None,
host_url="genome-mysql.cse.ucsc.edu",
):
"""
Download chrom size info for *genome* from UCSC and returns the dictionary.
Parameters
----------
genome : str
Name of the genome assembly (e.g., "hg38")
saveas : str
Filename to save output to. Dictionary will still be returned.
mysql, fetchchromsizes : str
Paths to MySQL and fetchChromSizes.
timeout : float
How long to wait for a response; mostly used for testing.
host_url : str
URL of UCSC mirror MySQL server.
"""
if not internet_on(timeout=timeout):
raise ValueError(
"It appears you don't have an internet connection "
"-- unable to get chromsizes from UCSC"
)
cmds = [
mysql,
"--user=genome",
"--host=" + host_url,
"-A",
"-e",
"select chrom, size from %s.chromInfo" % genome,
]
failures = []
d = {}
try:
p = subprocess.Popen(
cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=BUFSIZE
)
stdout, stderr = p.communicate()
if stderr:
print(stderr)
print("Commands were:\n")
print((subprocess.list2cmdline(cmds)))
lines = stdout.splitlines()[1:]
for line in lines:
if isinstance(line, bytes):
line = line.decode("UTF-8")
chrom, size = line.split()
d[chrom] = (0, int(size))
if saveas is not None:
chromsizes_to_file(d, saveas)
except OSError as err:
if err.errno == 2:
failures.append("Can't find mysql at path {0}".format(mysql))
else:
raise
try:
cmds = [fetchchromsizes, genome]
p = subprocess.Popen(
cmds, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=BUFSIZE
)
stdout, stderr = p.communicate()
if stderr:
if "INFO: trying WGET" not in str(stderr):
print(stderr)
print("Commands were:\n")
print((subprocess.list2cmdline(cmds)))
lines = stdout.splitlines()
for line in lines:
if isinstance(line, bytes):
line = line.decode("UTF-8")
chrom, size = line.split()
d[chrom] = (0, int(size))
if saveas is not None:
chromsizes_to_file(d, saveas)
except OSError as err:
if err.errno == 2:
failures.append("Can't find path to fetchChromsizes")
if not d:
raise OSError(failures)
return d
def chromsizes_to_file(chrom_sizes, fn=None):
"""
Converts a *chromsizes* dictionary to a file. If *fn* is None, then a
tempfile is created (which can be deleted with pybedtools.cleanup()).
Returns the filename.
"""
if fn is None:
tmpfn = tempfile.NamedTemporaryFile(
prefix="pybedtools.", suffix=".tmp", delete=False
)
tmpfn = tmpfn.name
filenames.TEMPFILES.append(tmpfn)
fn = tmpfn
if isinstance(chrom_sizes, str):
chrom_sizes = chromsizes(chrom_sizes)
fout = open(fn, "wt")
for chrom, bounds in sorted(chrom_sizes.items()):
line = chrom + "\t" + str(bounds[1]) + "\n"
fout.write(line)
fout.close()
return fn
def get_chromsizes_from_genomepy(
genome, saveas=None,
):
"""
Get chrom size info for *genome* from genomepy, if genomepy is installed.
Parameters
----------
genome : str
Name of the genome assembly (e.g., "hg38")
saveas : str
Filename to save output to. Dictionary will still be returned.
"""
if "genomepy" not in sys.modules:
return None
d = {}
try:
g = genomepy.Genome(genome)
# Fail silently if the sizes file cannot be accessed
if not hasattr(g, "sizes_file"):
return None
for line in open(g.sizes_file):
chrom, size = line.split()
d[chrom] = (0, int(size))
if saveas is not None:
chromsizes_to_file(d, saveas)
except FileNotFoundError:
return None
return d
def chromsizes(genome):
"""
Looks for a *genome* already included in the genome registry; if not found
it first tries to look it up via genomepy. If genomepy is not installed, or
if this lookup fails then it looks it up on UCSC. Returns the dictionary of
chromsize tuples where each tuple has (start,stop).
Chromsizes are described as (start, stop) tuples to allow randomization
within specified regions; e. g., you can make a chromsizes dictionary that
represents the extent of a tiling array.
Example usage:
>>> dm3_chromsizes = chromsizes('dm3')
>>> for i in sorted(dm3_chromsizes.items()):
... print(i)
('chr2L', (0, 23011544))
('chr2LHet', (0, 368872))
('chr2R', (0, 21146708))
('chr2RHet', (0, 3288761))
('chr3L', (0, 24543557))
('chr3LHet', (0, 2555491))
('chr3R', (0, 27905053))
('chr3RHet', (0, 2517507))
('chr4', (0, 1351857))
('chrM', (0, 19517))
('chrU', (0, 10049037))
('chrUextra', (0, 29004656))
('chrX', (0, 22422827))
('chrXHet', (0, 204112))
('chrYHet', (0, 347038))
"""
try:
return getattr(genome_registry, genome)
except AttributeError:
chromsizes = get_chromsizes_from_genomepy(genome)
if chromsizes is None:
return get_chromsizes_from_ucsc(genome)
else:
return chromsizes
def get_includes():
"""
Returns a list of include directories with BEDTools headers
"""
dirname = os.path.abspath(os.path.join(os.path.dirname(__file__)))
return [dirname, os.path.join(dirname, "include")]
atexit.register(cleanup)
pybedtools-0.9.0/pybedtools/include/ 0000775 0000000 0000000 00000000000 14173526301 0017515 5 ustar 00root root 0000000 0000000 pybedtools-0.9.0/pybedtools/include/bedFile.cpp 0000664 0000000 0000000 00000033564 14173526301 0021566 0 ustar 00root root 0000000 0000000 /*****************************************************************************
bedFile.cpp
(c) 2009 - Aaron Quinlan
Hall Laboratory
Department of Biochemistry and Molecular Genetics
University of Virginia
aaronquinlan@gmail.com
Licensed under the MIT license (as of Jan 2022)
******************************************************************************/
#include "bedFile.h"
/*******************************************
Class methods
*******************************************/
// Constructor
BedFile::BedFile(string bedFile)
: bedFile(bedFile),
_typeIsKnown(false),
_lineNum(0)
{}
// Destructor
BedFile::~BedFile(void) {
}
int BedFile::Open(void) {
if (bedFile == "stdin") {
_bedStream = &cin;
}
// New method thanks to Assaf Gordon
else if ((isGzipFile(bedFile) == false) && (isRegularFile(bedFile) == true)) {
// open an ifstream
ifstream beds(bedFile.c_str(), ios::in);
// can we open the file?
if ( !beds ) {
cerr << "BEDTools Error: The requested bed file (" << bedFile << ") could not be opened. Exiting!" << endl;
return -1;
}
else {
// if so, close it (this was just a test)
beds.close();
// now set a pointer to the stream so that we
_bedStream = new ifstream(bedFile.c_str(), ios::in);
}
}
else if ((isGzipFile(bedFile) == true) && (isRegularFile(bedFile) == true)) {
igzstream beds(bedFile.c_str(), ios::in);
if ( !beds ) {
cerr << "BEDTools Error: The requested bed file (" << bedFile << ") could not be opened. Exiting!" << endl;
return -1;
}
else {
// if so, close it (this was just a test)
beds.close();
// now set a pointer to the stream so that we
_bedStream = new igzstream(bedFile.c_str(), ios::in);
}
}
else {
cerr << "BEDTools Error: Unexpected file type (" << bedFile << "). Exiting!" << endl;
return -1;
}
return 1;
}
// Rewind the pointer back to the beginning of the file
void BedFile::Rewind(void) {
_bedStream->seekg(0, ios::beg);
}
// Jump to a specific byte in the file
void BedFile::Seek(unsigned long offset) {
_bedStream->seekg(offset);
}
// Close the BED file
void BedFile::Close(void) {
if (bedFile != "stdin") delete _bedStream;
}
BED BedFile::GetNextBed() {
BED bed;
// make sure there are still lines to process.
// if so, tokenize, validate and return the BED entry.
if (_bedStream->good()) {
string bedLine;
vector bedFields;
bedFields.reserve(12);
// parse the bedStream pointer
getline(*_bedStream, bedLine);
_lineNum++;
// split into a string vector.
Tokenize(bedLine,bedFields);
// load the BED struct as long as it's a valid BED entry.
bed.status = parseLine(bed, bedFields);
bed.fields = bedFields;
return bed;
}
else {
// default if file is closed or EOF
bed.status = BED_INVALID;
return bed;
}
}
vector BedFile::FindOverlapsPerBin(const BED &bed, float overlapFraction) {
vector hits;
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::iterator bedItr = bedMap[bed.chrom][j].begin();
vector::iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
// Note: zero-length features with no overlap (e.g., chr1:1-1
// to chr1:5-500) are ofrac = (-4/0) which in C++ is -inf.
//
// Zero-length features with exactly zero overlap (0/0;
// chr1:1-1 to chr1:1-1) in C++ is -nan.
//
// Note that in cbedtools, default overlapFraction is 0 and
// currently only positive values are supported.
//
// Also note that a zero-length feature that overlaps something
// else will *always* be considered a hit, regardless of
// overlapFraction.
if ((ofrac >= overlapFraction) || ( (size == 0) && (overlap == 0)))
{
bedItr->o_start = maxStart;
bedItr->o_end = minEnd;
hits.push_back(*bedItr);
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return hits;
}
vector BedFile::FindOverlapsPerBin(const BED &bed, bool forceStrand, float overlapFraction) {
vector hits;
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::iterator bedItr = bedMap[bed.chrom][j].begin();
vector::iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
if (
(bed.strand == bedItr->strand)
&& (
(ofrac >= overlapFraction)
|| ((size == 0) && (overlap == 0))
)
)
{
bedItr->o_start = maxStart;
bedItr->o_end = minEnd;
hits.push_back(*bedItr);
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return hits;
}
int BedFile::FindAnyOverlapsPerBin(const BED &bed, float overlapFraction) {
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::const_iterator bedItr = bedMap[bed.chrom][j].begin();
vector::const_iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
if ((ofrac >= overlapFraction) || ( (size == 0) && (overlap == 0)))
{
return 1;
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return 0;
}
int BedFile::FindAnyOverlapsPerBin(const BED &bed, bool forceStrand, float overlapFraction) {
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::const_iterator bedItr = bedMap[bed.chrom][j].begin();
vector::const_iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
if (
(bed.strand == bedItr->strand)
&& (
(ofrac >= overlapFraction)
|| ((size == 0) && (overlap == 0))
)
)
{
return 1;
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return 0;
}
int BedFile::CountOverlapsPerBin(const BED &bed, float overlapFraction) {
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
int count = 0;
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::const_iterator bedItr = bedMap[bed.chrom][j].begin();
vector::const_iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
if ((ofrac >= overlapFraction) || ( (size == 0) && (overlap == 0)))
{
count++;
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return count;
}
int BedFile::CountOverlapsPerBin(const BED &bed, bool forceStrand, float overlapFraction) {
BIN startBin, endBin;
startBin = (bed.start >> _binFirstShift);
endBin = ((bed.end-1) >> _binFirstShift);
int count = 0;
// loop through each bin "level" in the binning hierarchy
for (BINLEVEL i = 0; i < _binLevels; ++i) {
// loop through each bin at this level of the hierarchy
BIN offset = _binOffsetsExtended[i];
for (BIN j = (startBin+offset); j <= (endBin+offset); ++j) {
// loop through each feature in this chrom/bin and see if it overlaps
// with the feature that was passed in. if so, add the feature to
// the list of hits.
vector::const_iterator bedItr = bedMap[bed.chrom][j].begin();
vector::const_iterator bedEnd = bedMap[bed.chrom][j].end();
for (; bedItr != bedEnd; ++bedItr) {
// do we have sufficient overlap?
float size = (float) bed.end-bed.start;
int maxStart = max(bed.start, bedItr->start);
int minEnd = min(bed.end, bedItr->end);
int overlap = minEnd - maxStart;
float ofrac = (overlap/size);
if (
(bed.strand == bedItr->strand)
&& (
(ofrac >= overlapFraction)
|| ((size == 0) && (overlap == 0))
)
)
{
count++;
}
}
}
startBin >>= _binNextShift;
endBin >>= _binNextShift;
}
return count;
}
void BedFile::setFileType (FileType type) {
_fileType = type;
_typeIsKnown = true;
}
void BedFile::setBedType (int colNums) {
bedType = colNums;
}
void BedFile::loadBedFileIntoMap() {
BED bed, nullBed;
//BedLineStatus bedStatus;
Open();
bed = GetNextBed();
while ( bed.status != BED_INVALID) {
if (bed.status == BED_VALID) {
BIN bin = getBin(bed.start, bed.end);
bedMap[bed.chrom][bin].push_back(bed);
bed = nullBed;
}
bed = GetNextBed();
}
Close();
}
pybedtools-0.9.0/pybedtools/include/bedFile.h 0000664 0000000 0000000 00000047621 14173526301 0021232 0 ustar 00root root 0000000 0000000 /*****************************************************************************
bedFile.h
(c) 2009 - Aaron Quinlan
Hall Laboratory
Department of Biochemistry and Molecular Genetics
University of Virginia
aaronquinlan@gmail.com
Licensed under the MIT license (as of Jan 2022)
******************************************************************************/
#ifndef BEDFILE_H
#define BEDFILE_H
// "local" includes
#include "gzstream.h"
#include "lineFileUtilities.h"
#include "fileType.h"
// standard includes
#include
#include