Mercurial > repos > yufei-luo > s_mart

annotate smart_toolShed/SMART/Java/Python/CountReadGCPercent.py @ 4:1fc014126d55

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Uploaded
author yufei-luo
date Fri, 18 Jan 2013 04:45:50 -0500
parents e0f8dcca02ed
children
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e0f8dcca02ed Uploaded S-MART tool. A toolbox manages RNA-Seq and ChIP-Seq data.
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1 #!/usr/bin/env python
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2
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3 from optparse import OptionParser
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4 from commons.core.parsing.FastaParser import FastaParser
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5 from commons.core.writer.Gff3Writer import Gff3Writer
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6 from SMART.Java.Python.structure.TranscriptContainer import TranscriptContainer
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7 from SMART.Java.Python.misc.Progress import Progress
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8 from commons.core.utils.RepetOptionParser import RepetOptionParser
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9 from Gnome_tools.CountGCPercentBySlidingWindow import CountGCPercentBySlidingWindow
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10
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11
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12 class CountReadGCPercent(object):
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13
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14 def __init__(self):
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15 self.referenceReader = None
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16 self.gffReader = None
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17 self.outputWriter = None
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18 self.verbose = 0
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19
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20 def setInputReferenceFile(self, fileName):
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21 self.referenceReader = fileName
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22
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23 def setInputGffFile(self, fileName):
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24 self.gffReader = TranscriptContainer(fileName, 'gff3', self.verbose)
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25
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26 def setOutputFileName(self, fileName):
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27 self.outputWriter = Gff3Writer(fileName, self.verbose)
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28
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29 def readGffAnnotation(self):
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30 self.coveredRegions = {}
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31 progress = Progress(self.gffReader.getNbTranscripts(), "Reading gff3 annotation file", self.verbose)
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32 for transcript in self.gffReader.getIterator():
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33 chromosome = transcript.getChromosome()
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34 if chromosome not in self.coveredRegions:
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35 self.coveredRegions[chromosome] = {}
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36 for exon in transcript.getExons():
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37 for position in range(exon.getStart(), exon.getEnd()+1):
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38 self.coveredRegions[chromosome][position] = 1
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39 progress.inc()
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40 progress.done()
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41
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42 def write(self):
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43 iParser = FastaParser(self.referenceReader)
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44 iParser.setTags()
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45 iGetGCPercentBySW = CountGCPercentBySlidingWindow()
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46 progress = Progress(self.gffReader.getNbTranscripts(), "Writing output file", self.verbose)
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47 for transcript in self.gffReader.getIterator():
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48 chromosome = transcript.getChromosome()
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49 GCpercent = 0
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50 nPercent = 0
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51 for exon in transcript.getExons():
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52 for sequenceName in iParser.getTags().keys():
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53 if sequenceName != chromosome:
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54 continue
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55 else:
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56 subSequence = iParser.getSubSequence(sequenceName, exon.getStart() , exon.getEnd(), 1)
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57 GCpercent, nPercent = iGetGCPercentBySW.getGCPercentAccordingToNAndNPercent(subSequence)
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58 print "GCpercent = %f, nPercent = %f" % (GCpercent, nPercent)
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59 transcript.setTagValue("GCpercent", GCpercent)
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60 transcript.setTagValue("NPercent", nPercent)
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61 self.outputWriter.addTranscript(transcript)
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62 progress.inc()
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63 progress.done()
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64
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65 def run(self):
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66 self.readGffAnnotation()
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67 if self.outputWriter != None:
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68 self.write()
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69
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70 if __name__ == "__main__":
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71 description = "Count GC percent for each read against a genome."
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72 usage = "CountReadGCPercent.py -i <fasta file> -j <gff3 file> -o <output gff3 file> -v <verbose> -h]"
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73 examples = "\nExample: \n"
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74 examples += "\t$ python CountReadGCPercent.py -i file.fasta -j annotation.gff -o output.gff3"
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75 examples += "\n\n"
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76 parser = RepetOptionParser(description = description, usage = usage, version = "v1.0", epilog = examples)
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77 parser.add_option( '-i', '--inputGenome', dest='fastaFile', help='fasta file [compulsory]', default= None )
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78 parser.add_option( '-j', '--inputAnnotation', dest='gffFile', help='gff3 file [compulsory]', default= None)
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79 parser.add_option( '-o', '--output', dest='outputFile', help='output gff3 file [compulsory]', default= None )
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80 parser.add_option( '-v', '--verbose', dest='verbose', help='verbosity level (default=0/1)',type="int", default= 0 )
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81 (options, args) = parser.parse_args()
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82
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83 readGCPercent = CountReadGCPercent()
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84 readGCPercent.setInputReferenceFile(options.fastaFile)
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85 readGCPercent.setInputGffFile(options.gffFile)
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86 readGCPercent.setOutputFileName(options.outputFile)
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87 readGCPercent.run()
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88