def fragment2read(allparameterlist):
"""
input:
transcript string, transcript cigar, fragmentlist
output:
list of (readstr,readcigar)
"""
#read_extract_parameters=SE,100,300,400 ; single:size and fragment range
#read_extract_parameters=PE,100,300,400 ; paired:size and fragment range
#read_extract_parameters=PB,500,1000 ; pacbio fragment range
txstr, txcigar, fragmentlist, parameterlist = allparameterlist
readlist = []
if parameterlist[0] == 'SE':
substrsize = int(parameterlist[1])
for fragment in fragmentlist:
if common.toss():
substrstart = fragment[0]
else:
substrstart = fragment[1] - substrsize
readcigar = common.cigarsubstr(txcigar, substrstart, substrsize)
readstr = txstr[substrstart:substrstart + substrsize]
readlist.append([substrstart, readstr, readcigar])
if parameterlist[0] == 'PE':
substrsize = int(parameterlist[1])
for fragment in fragmentlist:
substrstart1 = fragment[0]
readcigar1 = common.cigarsubstr(txcigar, substrstart1, substrsize)
readstr1 = txstr[substrstart1:substrstart1 + substrsize]
#readlist.append([substrstart,readstr,readcigar])
substrstart2 = fragment[1] - substrsize
readcigar2 = common.cigarsubstr(txcigar, substrstart2, substrsize)
readstr2 = txstr[substrstart2:substrstart2 + substrsize]
readlist.append([[substrstart1, readstr1, readcigar1],
[substrstart2, readstr2, readcigar2]])
if parameterlist[0] == 'PB':
for fragment in fragmentlist:
substrstart = fragment[0]
substrsize = fragment[1] - fragment[0]
readcigar = common.cigarsubstr(txcigar, substrstart, substrsize)
readstr = txstr[substrstart:substrstart + substrsize]
readlist.append([substrstart, readstr, readcigar])
readlist.sort()
if parameterlist[0] == 'PE':
pe_readlist = readlist[0:]
readlist = []
for pe_read in pe_readlist:
read1, read2 = pe_read
readlist.append(read1)
readlist.append(read2)
return readlist
def fragment2read(allparameterlist):
"""
input:
transcript string, transcript cigar, fragmentlist
output:
list of (readstr,readcigar)
"""
#read_extract_parameters=SE,100,300,400 ; single:size and fragment range
#read_extract_parameters=PE,100,300,400 ; paired:size and fragment range
#read_extract_parameters=PB,500,1000 ; pacbio fragment range
txstr,txcigar,fragmentlist,parameterlist=allparameterlist
readlist=[]
if parameterlist[0]=='SE':
substrsize=int(parameterlist[1])
for fragment in fragmentlist:
if common.toss():
substrstart=fragment[0]
else:
substrstart=fragment[1]-substrsize
readcigar=common.cigarsubstr(txcigar,substrstart,substrsize)
readstr=txstr[substrstart:substrstart+substrsize]
readlist.append([substrstart,readstr,readcigar])
if parameterlist[0]=='PE':
substrsize=int(parameterlist[1])
for fragment in fragmentlist:
substrstart1=fragment[0]
readcigar1=common.cigarsubstr(txcigar,substrstart1,substrsize)
readstr1=txstr[substrstart1:substrstart1+substrsize]
#readlist.append([substrstart,readstr,readcigar])
substrstart2=fragment[1]-substrsize
readcigar2=common.cigarsubstr(txcigar,substrstart2,substrsize)
readstr2=txstr[substrstart2:substrstart2+substrsize]
readlist.append([[substrstart1,readstr1,readcigar1],[substrstart2,readstr2,readcigar2]])
if parameterlist[0]=='PB':
for fragment in fragmentlist:
substrstart=fragment[0]
substrsize=fragment[1]-fragment[0]
readcigar=common.cigarsubstr(txcigar,substrstart,substrsize)
readstr=txstr[substrstart:substrstart+substrsize]
readlist.append([substrstart,readstr,readcigar])
readlist.sort()
if parameterlist[0]=='PE':
pe_readlist=readlist[0:]
readlist=[]
for pe_read in pe_readlist:
read1,read2=pe_read
readlist.append(read1)
readlist.append(read2)
return readlist
def adderrortoread(readstr,readcigar,readqualitydeteriorationrate,indelrate):
switchdict={'A':'t','T':'a','C':'g','G':'c'}
outstr=''
errorrate=0
indellist=[0]
indelflaglist=[-1]
for i in range(len(readstr)):
if common.toss(indelrate) and i!=0 and indellist[-1]!=(i-1):
indellist.append(i)
if common.toss():
outstr+=outstr[-1]
outstr+=readstr[i]
indelflaglist.append(1)
else:
indelflaglist.append(0)
else:
if common.toss(errorrate):
outstr+=switchdict[readstr[i]]
else:
outstr+=readstr[i]
errorrate+=readqualitydeteriorationrate
indellist.append(len(readstr))
indelflaglist.append(-1)
outcigarstr=''
for i in range(1,len(indellist)):
subcig=common.cigarsubstr(readcigar,indellist[i-1],indellist[i]-indellist[i-1])
#print 'here',readcigar,indellist[i-1],indellist[i],subcig
outcigarstr+=subcig
if indelflaglist[i]==1:
outcigarstr+='1I'
elif indelflaglist[i]==0:
outcigarstr+='1D'
return [outstr,outcigarstr]
def adderrortoread(readstr, readcigar, readqualitydeteriorationrate,
indelrate):
switchdict = {'A': 't', 'T': 'a', 'C': 'g', 'G': 'c'}
outstr = ''
errorrate = 0
indellist = [0]
indelflaglist = [-1]
for i in range(len(readstr)):
if common.toss(indelrate) and i != 0 and indellist[-1] != (i - 1):
indellist.append(i)
if common.toss():
outstr += outstr[-1]
outstr += readstr[i]
indelflaglist.append(1)
else:
indelflaglist.append(0)
else:
if common.toss(errorrate):
outstr += switchdict[readstr[i]]
else:
outstr += readstr[i]
errorrate += readqualitydeteriorationrate
indellist.append(len(readstr))
indelflaglist.append(-1)
outcigarstr = ''
for i in range(1, len(indellist)):
subcig = common.cigarsubstr(readcigar, indellist[i - 1],
indellist[i] - indellist[i - 1])
#print 'here',readcigar,indellist[i-1],indellist[i],subcig
outcigarstr += subcig
if indelflaglist[i] == 1:
outcigarstr += '1I'
elif indelflaglist[i] == 0:
outcigarstr += '1D'
return [outstr, outcigarstr]
def gensimulatedreadsdata(sample_id,replicate_id,folderdict,genetxreaddict,genetxcigardict,config_object):
if debug_flg==2:
funcstarttime=time.time()
fragmentsizerange=[int(config_object.read_extract_parameters[2]),int(config_object.read_extract_parameters[3])]
txstartbias=config_object.txstartbias
cutscoredict=dict([(ln.split('\t')[0],float(ln.rstrip('\n').split('\t')[1])) for ln in open(config_object.cutpreferencefile)])
alignsam='%s/T%02dS%02d/alignments.sam'%(folderdict['data'][2],sample_id,replicate_id)
alignbam='%s/T%02dS%02d/alignments.bam'%(folderdict['data'][2],sample_id,replicate_id)
alignfout=open(alignsam,'w')
alignerrsam='%s/T%02dS%02d/alignments_with_errors.sam'%(folderdict['data'][2],sample_id,replicate_id)
alignerrbam='%s/T%02dS%02d/alignments_with_errors.bam'%(folderdict['data'][2],sample_id,replicate_id)
alignerrfout=open(alignerrsam,'w')
txgenereaddict=genetxreads2txgenereads(genetxreaddict,genetxcigardict)
metadatafile='%s/expression_T%02dS%02d.txt'%(folderdict['metadata'],sample_id,replicate_id)
fout=open(metadatafile,'w')
for gene in txgenereaddict:
for tx in txgenereaddict[gene]:
fout.write('%s:%s:%s\t%s\tTX\t%d\t%6.4f\t%d\t%d\t%s\n'%tuple(txgenereaddict[gene][tx]))
fout.close()
chrgenedict=genetxdict2chrgenedict(genetxcigardict)
chrlist=chrgenedict.keys()
chrlist.sort()
if debug_flg==2:
tottxstrgettime=0
totfraglistgettime=0
totreadlistgettime=0
toterrorreadgettime=0
for chrname in chrlist:
if not(os.path.isfile('%s/%s.fa'%(config_object.reference_genome_dir,chrname))):
message='%s/%s.fa: not found'%(config_object.reference_genome_dir,chrname)
common.printstatus(message,'S',common.func_name())
continue
chrfafileptr=open('%s/%s.fa'%(config_object.reference_genome_dir,chrname))
for gene in chrgenedict[chrname]:
for tx in genetxcigardict[gene]:
if debug_flg==2:
loopstarttime=time.time()
numreads=txgenereaddict[gene][tx][6]
startbase,cigarstr=genetxcigardict[gene][tx][2],genetxcigardict[gene][tx][3]
txstr=getRNAtranscriptstring(chrfafileptr,startbase,cigarstr)
if debug_flg==2:
txstrgettime=time.time()
tottxstrgettime+=txstrgettime-loopstarttime
message='Gene:%s, Transcript:%s; Transcript Size:%d, Num reads=%d'%(gene,tx,len(txstr),numreads)
common.printstatus(message,'S',common.func_name())
if len(txstr)<fragmentsizerange[0]:
continue
#print 'here',tx,startbase,cigarstr,len(txstr)
#empirical number of cuts
numcutmu=max(1,int(len(txstr)*4.0/(fragmentsizerange[0]+fragmentsizerange[1])))
numcutsig=numcutmu/2.0
#print gene,tx,len(txstr),fragmentsizerange[0],fragmentsizerange[1],numcutmu,numreads
fragmentlist=getfragments(txstr,numreads,txgenereaddict[gene][tx][2],cutscoredict,fragmentsizerange,txstartbias,numcutmu,numcutsig)
if debug_flg==2:
fraglistgettime=time.time()
totfraglistgettime+=fraglistgettime-txstrgettime
#print 'here',len(txstr),numcutmu,numreads,len(fragmentlist)
allparameterlist=[txstr,cigarstr,fragmentlist,config_object.read_extract_parameters]
readlist=runfunc(config_object.read_extract_method,allparameterlist)
if debug_flg==2:
readlistgettime=time.time()
totreadlistgettime+=readlistgettime-fraglistgettime
inum=0
for read in readlist:
rstartbase,readstr,readcigar=read
readstartlocation=sum([int(x) for x in common.cigarsubstr(cigarstr,0,rstartbase+1).replace('M','N').split('N')[:-1]])-1
inum+=1
alignfout.write('%s:%d:%d\t1\t%s\t%d\t0\t%s\t*\t0\t0\t%s\t*\n'%
(tx,inum,rstartbase,chrname,startbase+readstartlocation,readcigar,readstr))
if max(config_object.readqualitydeteriorationrate,config_object.indelrate)>0.0:
errreadstr,errcigarstr=adderrortoread(readstr,readcigar,config_object.readqualitydeteriorationrate,config_object.indelrate)
alignerrfout.write('%s:%d:%d\t1\t%s\t%d\t0\t%s\t*\t0\t0\t%s\t*\n'%
(tx,inum,rstartbase,chrname,startbase+readstartlocation,errcigarstr,errreadstr))
if debug_flg==2:
errorreadgettime=time.time()
toterrorreadgettime+=errorreadgettime-readlistgettime
alignfout.close()
alignerrfout.close()
if debug_flg==2:
functime=time.time()-funcstarttime
othertime=functime-(tottxstrgettime+totfraglistgettime+totreadlistgettime+toterrorreadgettime)
message='\n\nFunc Time=%s,Txstr=%4.2f,Fragtime=%4.2f,Readtime=%4.2f,Errtime=%4.2f,Oth=%4.2f\n\n'% \
(functime,tottxstrgettime*100/functime,totfraglistgettime*100/functime,
totreadlistgettime*100/functime,toterrorreadgettime*100/functime,othertime*100/functime)
common.printstatus(message,'S',common.func_name())
cmd='%s/samtools view -bt %s %s >%s'%(config_object.pathsamtools,config_object.chrfaifile,alignsam,alignbam)
message='Running %s'%cmd
common.printstatus(message,'S',common.func_name())
os.system(cmd)
if max(config_object.readqualitydeteriorationrate,config_object.indelrate)>0.0:
cmd='%s/samtools view -bt %s %s >%s'%(config_object.pathsamtools,config_object.chrfaifile,alignerrsam,alignerrbam)
message='Running %s'%cmd
common.printstatus(message,'S',common.func_name())
os.system(cmd)
return 1
def gensimulatedreadsdata(sample_id, replicate_id, folderdict, genetxreaddict,
genetxcigardict, config_object):
if debug_flg == 2:
funcstarttime = time.time()
fragmentsizerange = [
int(config_object.read_extract_parameters[2]),
int(config_object.read_extract_parameters[3])
]
txstartbias = config_object.txstartbias
cutscoredict = dict([(ln.split('\t')[0],
float(ln.rstrip('\n').split('\t')[1]))
for ln in open(config_object.cutpreferencefile)])
alignsam = '%s/T%02dS%02d/alignments.sam' % (folderdict['data'][2],
sample_id, replicate_id)
alignbam = '%s/T%02dS%02d/alignments.bam' % (folderdict['data'][2],
sample_id, replicate_id)
alignfout = open(alignsam, 'w')
alignerrsam = '%s/T%02dS%02d/alignments_with_errors.sam' % (
folderdict['data'][2], sample_id, replicate_id)
alignerrbam = '%s/T%02dS%02d/alignments_with_errors.bam' % (
folderdict['data'][2], sample_id, replicate_id)
alignerrfout = open(alignerrsam, 'w')
txgenereaddict = genetxreads2txgenereads(genetxreaddict, genetxcigardict)
metadatafile = '%s/expression_T%02dS%02d.txt' % (folderdict['metadata'],
sample_id, replicate_id)
fout = open(metadatafile, 'w')
for gene in txgenereaddict:
for tx in txgenereaddict[gene]:
fout.write('%s:%s:%s\t%s\tTX\t%d\t%6.4f\t%d\t%d\t%s\n' %
tuple(txgenereaddict[gene][tx]))
fout.close()
chrgenedict = genetxdict2chrgenedict(genetxcigardict)
chrlist = chrgenedict.keys()
chrlist.sort()
if debug_flg == 2:
tottxstrgettime = 0
totfraglistgettime = 0
totreadlistgettime = 0
toterrorreadgettime = 0
for chrname in chrlist:
if not (os.path.isfile('%s/%s.fa' %
(config_object.reference_genome_dir, chrname))):
message = '%s/%s.fa: not found' % (
config_object.reference_genome_dir, chrname)
common.printstatus(message, 'S', common.func_name())
continue
chrfafileptr = open('%s/%s.fa' %
(config_object.reference_genome_dir, chrname))
for gene in chrgenedict[chrname]:
for tx in genetxcigardict[gene]:
if debug_flg == 2:
loopstarttime = time.time()
numreads = txgenereaddict[gene][tx][6]
startbase, cigarstr = genetxcigardict[gene][tx][
2], genetxcigardict[gene][tx][3]
txstr = getRNAtranscriptstring(chrfafileptr, startbase,
cigarstr)
if debug_flg == 2:
txstrgettime = time.time()
tottxstrgettime += txstrgettime - loopstarttime
message = 'Gene:%s, Transcript:%s; Transcript Size:%d, Num reads=%d' % (
gene, tx, len(txstr), numreads)
common.printstatus(message, 'S', common.func_name())
if len(txstr) < fragmentsizerange[0]:
continue
#print 'here',tx,startbase,cigarstr,len(txstr)
#empirical number of cuts
numcutmu = max(
1,
int(
len(txstr) * 4.0 /
(fragmentsizerange[0] + fragmentsizerange[1])))
numcutsig = numcutmu / 2.0
#print gene,tx,len(txstr),fragmentsizerange[0],fragmentsizerange[1],numcutmu,numreads
fragmentlist = getfragments(txstr, numreads,
txgenereaddict[gene][tx][2],
cutscoredict, fragmentsizerange,
txstartbias, numcutmu, numcutsig)
if debug_flg == 2:
fraglistgettime = time.time()
totfraglistgettime += fraglistgettime - txstrgettime
#print 'here',len(txstr),numcutmu,numreads,len(fragmentlist)
allparameterlist = [
txstr, cigarstr, fragmentlist,
config_object.read_extract_parameters
]
readlist = runfunc(config_object.read_extract_method,
allparameterlist)
if debug_flg == 2:
readlistgettime = time.time()
totreadlistgettime += readlistgettime - fraglistgettime
inum = 0
for read in readlist:
rstartbase, readstr, readcigar = read
readstartlocation = sum([
int(x) for x in common.cigarsubstr(
cigarstr, 0, rstartbase +
1).replace('M', 'N').split('N')[:-1]
]) - 1
inum += 1
alignfout.write(
'%s:%d:%d\t1\t%s\t%d\t0\t%s\t*\t0\t0\t%s\t*\n' %
(tx, inum, rstartbase, chrname,
startbase + readstartlocation, readcigar, readstr))
if max(config_object.readqualitydeteriorationrate,
config_object.indelrate) > 0.0:
errreadstr, errcigarstr = adderrortoread(
readstr, readcigar,
config_object.readqualitydeteriorationrate,
config_object.indelrate)
alignerrfout.write(
'%s:%d:%d\t1\t%s\t%d\t0\t%s\t*\t0\t0\t%s\t*\n' %
(tx, inum, rstartbase, chrname, startbase +
readstartlocation, errcigarstr, errreadstr))
if debug_flg == 2:
errorreadgettime = time.time()
toterrorreadgettime += errorreadgettime - readlistgettime
alignfout.close()
alignerrfout.close()
if debug_flg == 2:
functime = time.time() - funcstarttime
othertime = functime - (tottxstrgettime + totfraglistgettime +
totreadlistgettime + toterrorreadgettime)
message='\n\nFunc Time=%s,Txstr=%4.2f,Fragtime=%4.2f,Readtime=%4.2f,Errtime=%4.2f,Oth=%4.2f\n\n'% \
(functime,tottxstrgettime*100/functime,totfraglistgettime*100/functime,
totreadlistgettime*100/functime,toterrorreadgettime*100/functime,othertime*100/functime)
common.printstatus(message, 'S', common.func_name())
cmd = '%s/samtools view -bt %s %s >%s' % (config_object.pathsamtools,
config_object.chrfaifile,
alignsam, alignbam)
message = 'Running %s' % cmd
common.printstatus(message, 'S', common.func_name())
os.system(cmd)
if max(config_object.readqualitydeteriorationrate,
config_object.indelrate) > 0.0:
cmd = '%s/samtools view -bt %s %s >%s' % (config_object.pathsamtools,
config_object.chrfaifile,
alignerrsam, alignerrbam)
message = 'Running %s' % cmd
common.printstatus(message, 'S', common.func_name())
os.system(cmd)
return 1
