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# IlluminaBeadArrayFiles | ||
Library to parse file formats related to Illumina bead arrays | ||
Library to parse file formats related to Illumina bead arrays. GTC files are produced by the AutoConvert and AutoCall softwares and contain genotyping (and other) information encoded in a binary format. The IlluminaBeadArrayFiles library provides a parser to extract information from these binary files. | ||
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## Build instructions | ||
The IlluminaBeadArrayFiles repository supports building a package with the python distutils module (https://docs.python.org/2/distutils/setupscript.html). To build a source distribution, run the included setup.py script supplying the "sdist" command | ||
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>python setup.py sdist | ||
## Installation instructions | ||
After unpacking the installation package, run the setup.py script supplying the "install" command | ||
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>python setup.py install | ||
If the user prefers not to use the python distutils framework, it is also possible to copy the IlluminaBeadArrayFiles.py source file into a location referenced by the PYTHONPATH environment variable. | ||
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## Example usage | ||
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> from IlluminaBeadArrayFiles import GenotypeCalls, BeadPoolManifest, code2genotype | ||
> import sys | ||
> gtc_file = "path_to_genotypes.gtc" | ||
> manifest_file = "path_to_manifest.bpm" | ||
> names = BeadPoolManifest( manifest_file ).names | ||
> genotypes = GenotypeCalls( gtc_file ).get_genotypes() | ||
> for (locus, genotype) in zip( names, genotypes ): | ||
> sys.stdout.write( locus + "," + code2genotype[genotype] + "\n" ) | ||
Also, see examples/gtc_final_report.py for an additional example of usage. | ||
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## GTC File Format | ||
The specification for the GTC file format is provided in docs/GTC_File_Format_v5.pdf | ||
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## Description of classes and objects in exposed in package | ||
For further details on specific class methods, please consult the built-in docstring documentation | ||
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### code2genotype | ||
Dictionary mapping from genotype byte code (see GTC file format specification) to a string representing the genotype (e.g., "AA") | ||
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### NC, AA, AB, and BB | ||
Constants representing byte values for associated genotypes | ||
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### GenotypeCalls | ||
Class to parse GTC files as produced by Illumina AutoConvert and AutoCall software. | ||
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### NormalizationTransform | ||
Class to encapsulate a normalization transform for conversion of raw intensity data to normalized intensity data | ||
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### ScannerData | ||
Class to encapsulate the meta-data collected in the GTC file for a scanner instrument | ||
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### BeadPoolManifest | ||
Class for parsing a binary (BPM) manifest file. This class can be used to recover the in-order list of loci names in a given manifest, which is necessary to associate the genotype information present in the GTC file to a specific locus name. | ||
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## Compatibility | ||
This library is compatible with Python 2.7 and was tested with Python 2.7.11 | ||
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## License | ||
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>Copyright (c) 2016, Illumina | ||
> All rights reserved. | ||
> | ||
> Redistribution and use in source and binary forms, with or without | ||
> modification, are permitted provided that the following conditions are met: | ||
> | ||
>1. Redistributions of source code must retain the above copyright notice, this | ||
>list of conditions and the following disclaimer. | ||
>2. Redistributions in binary form must reproduce the above copyright notice, | ||
>this list of conditions and the following disclaimer in the documentation | ||
>and/or other materials provided with the distribution. | ||
> | ||
>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | ||
>ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
>WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
>DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR | ||
>ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
>(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
>LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
>ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
>(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
>SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
> | ||
>The views and conclusions contained in the software and documentation are those | ||
>of the authors and should not be interpreted as representing official policies, | ||
>either expressed or implied, of the FreeBSD Project. | ||
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from IlluminaBeadArrayFiles import GenotypeCalls, BeadPoolManifest, code2genotype | ||
import sys | ||
import os | ||
from datetime import datetime | ||
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delim = "\t" | ||
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if len(sys.argv) < 4: | ||
sys.stderr.write("Generate a final report from a directory of GTC files\n") | ||
sys.stderr.write("usage: python gtc_final_report.py <BPM manifest file> <GTC directory> <output file>\n") | ||
sys.exit(-1) | ||
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try: | ||
names = BeadPoolManifest(sys.argv[1]).names | ||
except: | ||
sys.stderr.write("Failed to read loci names from manifest\n") | ||
sys.exit(-1) | ||
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output_file = sys.argv[3] | ||
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if os.path.isfile( output_file ): | ||
sys.stderr.write("Output file already exists, please delete and re-run\n") | ||
sys.exit(-1) | ||
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with open(output_file, "w") as output_handle: | ||
output_handle.write("[Header]\n") | ||
output_handle.write(delim.join(["Processing Date", datetime.now().strftime("%m/%d/%Y %I:%M %p") ] )+ "\n") | ||
output_handle.write(delim.join(["Content", os.path.basename( sys.argv[1]) ]) + "\n") | ||
output_handle.write(delim.join(["Num SNPs", str( len(names) )]) + "\n") | ||
output_handle.write(delim.join(["Total SNPs", str( len(names))]) + "\n") | ||
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samples = [] | ||
for file in os.listdir(sys.argv[2]): | ||
if file.lower().endswith(".gtc"): | ||
samples.append( file ) | ||
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output_handle.write(delim.join(["Num Samples", str(len(samples))]) + "\n") | ||
output_handle.write(delim.join(["Total Samples", str(len(samples))]) + "\n") | ||
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output_handle.write("[Data]\n") | ||
output_handle.write(delim.join([ "SNP Name", "Sample ID", "Alleles - AB"]) + "\n") | ||
for file in samples: | ||
sys.stderr.write("Processing " + file + "\n") | ||
gtc_file = os.path.join( sys.argv[2], file ) | ||
genotypes = GenotypeCalls(gtc_file).get_genotypes() | ||
assert len(genotypes) == len(names) | ||
for (name, genotype) in zip( names, genotypes): | ||
output_handle.write(delim.join( [name, file[:-4],code2genotype[genotype], ] ) + "\n") |
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