def fimo(motifs, fasta, qval=True):
# Run Fimo
if qval:
options = "--max-stored-scores 1000000 --verbosity 1 --thresh 0.01 --qv-thresh"
else:
options = "--max-stored-scores 1000000 --verbosity 1 --thresh 0.000001"
cmd = "fimo " + options + " %s %s" % (motifs, fasta)
print "Running >>", cmd
os.system(cmd)
os.system("sort -k2,2n -k3,3n -k4,4n fimo_out/fimo.txt > fimo.txt")
# Bed output
t = track('fimo.txt',
fields=[
"name", "chr", "start", "end", "strand", "score", "p-value",
"q-value", "sequence"
])
t.fields = [
"name", "chr", "start", "end", "strand", "a", "score", "q", "sequence"
]
s = t.read()
s = select(s, ['chr', 'start', 'end', 'name', 'score', 'strand'])
s = apply(s, 'chr', lambda x: x.split('|')[1])
s = sorted_stream(s)
s = cobble(s)
s = apply(s, 'name', lambda x: '|'.join(list(set(x.split('|')))))
outname = 'fimo.bed'
bed = track(outname, fields=s.fields)
bed.make_header(name="TSS_motifs",
description="Motifs +-XKb around TSS",
mode='overwrite')
bed.write(s)
if os.path.exists("fimo_out"): shutil.rmtree("fimo_out")
def fimo(motifs,fasta,qval=True):
# Run Fimo
if qval:
options = "--max-stored-scores 1000000 --verbosity 1 --thresh 0.01 --qv-thresh"
else:
options = "--max-stored-scores 1000000 --verbosity 1 --thresh 0.000001"
cmd = "fimo " + options + " %s %s" % (motifs, fasta)
print "Running >>",cmd
os.system(cmd)
os.system("sort -k2,2n -k3,3n -k4,4n fimo_out/fimo.txt > fimo.txt")
# Bed output
t = track('fimo.txt', fields=["name","chr","start","end","strand","score","p-value","q-value","sequence"])
t.fields = ["name","chr","start","end","strand","a","score","q","sequence"]
s = t.read()
s = select(s,['chr','start','end','name','score','strand'])
s = apply(s,'chr',lambda x:x.split('|')[1])
s = sorted_stream(s)
s = cobble(s)
s = apply(s,'name',lambda x:'|'.join(list(set(x.split('|')))))
outname = 'fimo.bed'
bed = track(outname,fields=s.fields)
bed.make_header(name="TSS_motifs", description="Motifs +-XKb around TSS", mode='overwrite')
bed.write(s)
if os.path.exists("fimo_out"): shutil.rmtree("fimo_out")
def test_apply(self):
stream = fstream([(10,12,0.5), (14,15,1.2)], fields=['start','end','score'])
res = list(apply(stream,'score',lambda x:2*x))
expected = [(10,12,1.), (14,15,2.4)]
self.assertListEqual(res,expected)
stream = fstream([(10,12,0.5), (14,15,1.2)], fields=['start','end','score'])
res = list(apply(stream,['score','end'],[lambda x:2*x, lambda x:x-3]))
expected = [(10,9,1.), (14,12,2.4)]
self.assertListEqual(res,expected)
def test_apply(self):
stream = fstream([(10, 12, 0.5), (14, 15, 1.2)],
fields=['start', 'end', 'score'])
res = list(apply(stream, 'score', lambda x: 2 * x))
expected = [(10, 12, 1.), (14, 15, 2.4)]
self.assertListEqual(res, expected)
stream = fstream([(10, 12, 0.5), (14, 15, 1.2)],
fields=['start', 'end', 'score'])
res = list(
apply(stream, ['score', 'end'],
[lambda x: 2 * x, lambda x: x - 3]))
expected = [(10, 9, 1.), (14, 12, 2.4)]
self.assertListEqual(res, expected)
def __call__(self, **kw):
func = kw.get('function', "log2")
l_track = kw.get('SigMulti', {}).get('track', [])
if not isinstance(l_track, list): l_track = [l_track]
outall = []
for tname in l_track:
tinput = track(tname)
if 'score' not in tinput.fields: continue
format = kw.get('format', tinput.format)
out_name = tinput.name + '_' + func + '.' + format
outtemp = self.temporary_path(out_name)
out_track = track(outtemp, chrmeta=tinput.chrmeta)
filtered = score_threshold(tinput, strict=(func[:3] == "log"))
out_track.write(apply(filtered, 'score', eval(func)), mode='write')
out_track.close()
outall.append(outtemp)
tinput.close()
if len(outall) == 1:
self.new_file(outall[0], 'converted_track')
elif len(outall) > 1:
tar_name = self.temporary_path(fname="numeric_operation_out.tgz")
tar = tarfile.open(tar_name, "w:gz")
[tar.add(f, arcname=os.path.basename(f)) for f in outall]
tar.close()
self.new_file(tar_name, 'converted_track_tar')
return self.display_time()
def __call__(self, **kw):
func = kw.get('function',"log2")
#l_track = kw.get('SigMulti', {}).get('track',[])
l_track = kw.get('track',[])
if not isinstance(l_track, list): l_track = [l_track]
outall = []
for tname in l_track :
tinput = track(tname)
if 'score' not in tinput.fields: continue
format = kw.get('output',tinput.format)
out_name = tinput.name+'_'+func+'.'+format
outtemp = self.temporary_path(out_name)
out_track = track(outtemp,chrmeta=tinput.chrmeta)
filtered = score_threshold(tinput, strict=(func[:3] == "log"))
out_track.write(apply(filtered,'score',eval(func)), mode='write')
out_track.close()
outall.append(outtemp)
tinput.close()
if len(outall) == 1:
self.new_file(outall[0], 'converted_track')
elif len(outall) > 1:
tar_name = self.temporary_path(fname="numeric_operation_out.tgz")
tar = tarfile.open(tar_name, "w:gz")
[tar.add(f,arcname=os.path.basename(f)) for f in outall]
tar.close()
self.new_file(tar_name, 'converted_track_tar')
return self.display_time()
def convert_junc_file(self, filename):
"""Convert a .junc SOAPsplice output file to bed format. Return the file name.
:param filename: (str) name of the .junc file to convert.
"""
t = track(filename, format='txt', fields=['chr','start','end','strand','score'],
chrmeta=self.assembly.chrmeta)
stream = t.read()
# Translate chromosome names
s1 = map_chromosomes(stream, self.assembly.chromosomes)
# Add junction IDs
s2 = duplicate(s1,'strand','name')
C = itertools.count()
s3 = apply(s2,'name', lambda x: 'junction'+str(C.next()))
# Convert to bed format
outfile = unique_filename_in()
bed = outfile + '.bed'
out = track(bed, fields=s3.fields, chrmeta=self.assembly.chrmeta)
out.write(s3)
return bed
def convert_junc_file(self, filename):
"""Convert a .junc SOAPsplice output file to bed format. Return the file name.
:param filename: (str) name of the .junc file to convert.
"""
t = track(filename,
format='txt',
fields=['chr', 'start', 'end', 'strand', 'score'],
chrmeta=self.assembly.chrmeta)
stream = t.read()
# Translate chromosome names
s1 = map_chromosomes(stream, self.assembly.chromosomes)
# Add junction IDs
s2 = duplicate(s1, 'strand', 'name')
C = itertools.count()
s3 = apply(s2, 'name', lambda x: 'junction' + str(C.next()))
# Convert to bed format
outfile = unique_filename_in()
bed = outfile + '.bed'
out = track(bed, fields=s3.fields, chrmeta=self.assembly.chrmeta)
out.write(s3)
return bed
def chipseq_workflow( ex, job_or_dict, assembly, script_path='', logfile=sys.stdout, via='lsf' ):
"""Runs a chipseq workflow over bam files obtained by mapseq. Will optionally run ``macs`` and 'run_deconv'.
:param ex: a 'bein' execution environment to run jobs in,
:param job_or_dict: a 'Frontend' 'job' object, or a dictionary with key 'groups', 'files' and 'options' if applicable,
:param assembly: a genrep.Assembly object,
:param script_path: only needed if 'run_deconv' is in the job options, must point to the location of the R scripts.
Defaults ``macs`` parameters (overriden by ``job_or_dict['options']['macs_args']``) are set as follows:
* ``'-bw'``: 200 ('bandwith')
* ``'-m'``: 10,100 ('minimum and maximum enrichments relative to background or control')
The enrichment bounds will be computed from a Poisson threshold *T*, if available, as *(min(30,5*(T+1)),50*(T+1))*.
Returns a tuple of a dictionary with keys *group_id* from the job groups, *macs* and *deconv* if applicable and values file description dictionaries and a dictionary of *group_ids* to *names* used in file descriptions.
"""
options = {}
if logfile is None: logfile = sys.stdout
if isinstance(job_or_dict,frontend.Job):
options = job_or_dict.options
groups = job_or_dict.groups
mapseq_files = job_or_dict.files
elif isinstance(job_or_dict,dict) and 'groups' in job_or_dict:
if 'options' in job_or_dict:
options = job_or_dict['options']
groups = job_or_dict['groups']
for gid in groups.keys():
if not('name' in groups[gid]):
groups[gid]['name'] = gid
mapseq_files = job_or_dict.get('files',{})
else:
raise TypeError("job_or_dict must be a frontend. Job object or a dictionary with key 'groups'.")
merge_strands = int(options.get('merge_strands',-1))
suffixes = ["fwd","rev"]
peak_deconvolution = options.get('peak_deconvolution',False)
if isinstance(peak_deconvolution,basestring):
peak_deconvolution = peak_deconvolution.lower() in ['1','true','t']
run_meme = options.get('run_meme',False)
if isinstance(run_meme,basestring):
run_meme = run_meme.lower() in ['1','true','t']
macs_args = options.get('macs_args',["--bw","200"])
b2w_args = options.get('b2w_args',[])
if not(isinstance(mapseq_files,dict)):
raise TypeError("Mapseq_files must be a dictionary.")
tests = []
controls = []
names = {'tests': [], 'controls': []}
read_length = []
p_thresh = {}
for gid,mapped in mapseq_files.iteritems():
group_name = groups[gid]['name']
if not(isinstance(mapped,dict)):
raise TypeError("Mapseq_files values must be dictionaries with keys *run_ids* or 'bam'.")
if 'bam' in mapped:
mapped = {'_': mapped}
futures = {}
ptruns = []
for k in mapped.keys():
if not 'libname' in mapped[k]:
mapped[k]['libname'] = group_name+"_"+str(k)
if not 'stats' in mapped[k]:
futures[k] = mapseq.bamstats.nonblocking( ex, mapped[k]["bam"], via=via )
if mapped[k].get('poisson_threshold',-1)>0:
ptruns.append(mapped[k]['poisson_threshold'])
if len(ptruns)>0:
p_thresh['group_name'] = sum(ptruns)/len(ptruns)
for k in futures.keys():
mapped[k]['stats'] = f.wait()
if len(mapped)>1:
bamfile = mapseq.merge_bam(ex, [m['bam'] for m in mapped.values()])
else:
bamfile = mapped.values()[0]['bam']
if groups[gid]['control']:
controls.append(bamfile)
names['controls'].append((gid,group_name))
else:
tests.append(bamfile)
names['tests'].append((gid,group_name))
read_length.append(mapped.values()[0]['stats']['read_length'])
genome_size = mapped.values()[0]['stats']['genome_size']
if len(controls)<1:
controls = [None]
names['controls'] = [(0,None)]
logfile.write("Starting MACS.\n");logfile.flush()
processed = {'macs': add_macs_results( ex, read_length, genome_size,
tests, ctrlbam=controls, name=names,
poisson_threshold=p_thresh,
macs_args=macs_args, via=via ) }
logfile.write("Done MACS.\n");logfile.flush()
peak_list = {}
chrlist = assembly.chrmeta
## select only peaks with p-val <= 1e-0.6 = .25 => score = -10log10(p) >= 6
_select = {'score':(6,sys.maxint)}
_fields = ['chr','start','end','name','score']
for i,name in enumerate(names['tests']):
if len(names['controls']) < 2:
ctrl = (name,names['controls'][0])
macsbed = track(processed['macs'][ctrl]+"_summits.bed",
chrmeta=chrlist, fields=_fields).read(selection=_select)
else:
macsbed = concatenate([apply(track(processed['macs'][(name,x)]+"_summits.bed",
chrmeta=chrlist, fields=_fields).read(selection=_select),
'name', lambda __n,_n=xn: "%s:%i" %(__n,_n))
for xn,x in enumerate(names['controls'])])
##############################
macs_neighb = neighborhood( macsbed, before_start=150, after_end=150 )
peak_list[name] = unique_filename_in()+".sql"
macs_final = track( peak_list[name], chrmeta=chrlist,
info={'datatype':'qualitative'},
fields=['start','end','name','score'] )
macs_final.write(fusion(macs_neighb),clip=True)
macs_final.close()
##############################
merged_wig = {}
options['read_extension'] = int(options.get('read_extension') or read_length[0])
if options['read_extension'] < 1: options['read_extension'] = read_length[0]
make_wigs = merge_strands >= 0 or options['read_extension']>100
if options['read_extension'] > 100: options['read_extension'] = 50
for gid,mapped in mapseq_files.iteritems():
# if groups[gid]['control']: continue
group_name = groups[gid]['name']
wig = []
for m in mapped.values():
if make_wigs or not('wig' in m) or len(m['wig'])<2:
output = mapseq.parallel_density_sql( ex, m["bam"], assembly.chrmeta,
nreads=m["stats"]["total"],
merge=-1, read_extension=options['read_extension'],
convert=False,
b2w_args=b2w_args, via=via )
wig.append(dict((s,output+s+'.sql') for s in suffixes))
else:
wig.append(m['wig'])
if len(wig) > 1:
merged_wig[group_name] = dict((s,merge_sql(ex, [x[s] for x in wig], via=via))
for s in suffixes)
else:
merged_wig[group_name] = wig[0]
if peak_deconvolution:
##############################
def _filter_deconv( stream, pval ):
ferr = re.compile(r';FERR=([\d\.]+)$')
return FeatureStream( ((x[0],)+((x[2]+x[1])/2-150,(x[2]+x[1])/2+150)+x[3:]
for x in stream
if "FERR=" in x[3] and float(ferr.search(x[3]).groups()[0]) <= pval),
fields=stream.fields )
##############################
processed['deconv'] = {}
for name in names['tests']:
logfile.write(name[1]+" deconvolution.\n");logfile.flush()
if len(names['controls']) < 2:
ctrl = (name,names['controls'][0])
macsbed = processed['macs'][ctrl]+"_peaks.bed"
else:
macsbed = intersect_many_bed( ex, [processed['macs'][(name,x)]+"_peaks.bed"
for x in names['controls']], via=via )
deconv = run_deconv( ex, merged_wig[name[1]], macsbed, assembly.chrmeta,
options['read_extension'], script_path, via=via )
peak_list[name] = unique_filename_in()+".bed"
trbed = track(deconv['peaks']).read()
with track(peak_list[name], chrmeta=chrlist, fields=trbed.fields) as bedfile:
bedfile.write(fusion(_filter_deconv(trbed,0.65)))
ex.add(deconv['peaks'],
description=set_file_descr(name[1]+'_peaks.sql', type='sql',
step='deconvolution', groupId=name[0]))
ex.add(deconv['profile'],
description=set_file_descr(name[1]+'_deconv.sql', type='sql',
step='deconvolution', groupId=name[0]))
bigwig = unique_filename_in()
try:
convert(deconv['profile'],(bigwig,"bigWig"))
ex.add(bigwig,
description=set_file_descr(name[1]+'_deconv.bw', type='bigWig',
ucsc='1', step='deconvolution',
groupId=name[0]))
except OSError as e:
logfile.write(str(e));logfile.flush()
ex.add(deconv['pdf'],
description=set_file_descr(name[1]+'_deconv.pdf', type='pdf',
step='deconvolution', groupId=name[0]))
processed['deconv'][name] = deconv
##############################
def _join_macs( stream, xlsl, _f ):
def _macs_row(_s):
for _p in _s:
for _n in _p[3].split("|"):
if len(xlsl) == 1:
nb = int(_n.split(";")[0][13:]) if _n[:3] == "ID=" else int(_n[10:])
yield _p+xlsl[0][nb-1][1:]
else:
nb = _n.split(";")[0][13:] if _n[:3] == "ID=" else _n[10:]
nb = nb.split(":")
yield _p+xlsl[int(nb[1])][int(nb[0])-1][1:]
return FeatureStream( _macs_row(stream), fields=_f )
##############################
peakfile_list = []
for name, plist in peak_list.iteritems():
ptrack = track(plist,chrmeta=chrlist,fields=["chr","start","end","name","score"])
peakfile = unique_filename_in()
xlsh, xlsl = parse_MACS_xls([processed['macs'][(name,_c)]+"_peaks.xls" for _c in names['controls']])
try:
###### if assembly doesn't have annotations, we skip the "getNearestFeature" but still go through "_join_macs"
assembly.gene_track()
_fields = ['chr','start','end','name','score','gene','location_type','distance']\
+["MACS_%s"%h for h in xlsh[1:5]]+xlsh[5:]
peakout = track(peakfile, format='txt', chrmeta=chrlist, fields=_fields)
peakout.make_header("#"+"\t".join(['chromosome','start','end','info','peak_height','gene(s)','location_type','distance']+_fields[8:]))
for chrom in assembly.chrnames:
_feat = assembly.gene_track(chrom)
peakout.write(_join_macs(getNearestFeature(ptrack.read(selection=chrom),_feat),
xlsl, _fields), mode='append')
except ValueError:
_fields = ['chr','start','end','name','score']+["MACS_%s"%h for h in xlsh[1:5]]+xlsh[5:]
peakout = track(peakfile, format='txt', chrmeta=chrlist, fields=_fields)
peakout.make_header("#"+"\t".join(['chromosome','start','end','info','peak_height']+_fields[8:]))
for chrom in assembly.chrnames:
peakout.write(_join_macs(ptrack.read(selection=chrom), xlsl, _fields), mode='append')
peakout.close()
gzipfile(ex,peakfile)
peakfile_list.append(track(peakfile+".gz", format='txt', fields=_fields))
ex.add(peakfile+".gz",
description=set_file_descr(name[1]+'_annotated_peaks.txt.gz',type='text',
step='annotation',groupId=name[0]))
stracks = [track(wig,info={'name':name+"_"+st})
for name,wigdict in merged_wig.iteritems() for st,wig in wigdict.iteritems()]
tablefile = unique_filename_in()
with open(tablefile,"w") as _tf:
_pnames = ["MACS_%s_vs_%s" %(_s[1],_c[1]) if _c[1] else "MACS_%s" %_s[1]
for _s in names['tests'] for _c in names['controls']]
_tf.write("\t".join(['#chromosome','start','end',]+_pnames+[s.name for s in stracks])+"\n")
#### need to do something about peak origin (split names, write to separate columns?)
for chrom in assembly.chrnames:
pk_lst = [apply(pt.read(chrom,fields=['chr','start','end','name']),
'name', lambda __n,_n=npt: "%s:%i" %(__n,_n))
for npt,pt in enumerate(peakfile_list)]
features = fusion(concatenate(pk_lst, fields=['chr','start','end','name'],
remove_duplicates=True, group_by=['chr','start','end']))
sread = [sig.read(chrom) for sig in stracks]
quantifs = score_by_feature(sread, features, method='sum')
nidx = quantifs.fields.index('name')
_ns = len(tests)
_nc = len(controls)
with open(tablefile,"a") as _tf:
for row in quantifs:
pcols = ['']*_ns*_nc
_rnsplit = row[nidx].split(":")
_n1 = _rnsplit[0]
_k = 0
while ( _k < len(_rnsplit)-1-int(_nc>1) ):
if _nc > 1:
_k += 2
_n2 = _rnsplit[_k-1]
_n = _rnsplit[_k].split("|")
pcols[int(_n[0])*_nc+int(_n2)] = _n1
else:
_k += 1
_n = _rnsplit[_k].split("|")
pcols[int(_n[0])] = _n1
_n1 = "|".join(_n[1:])
_tf.write("\t".join(str(tt) for tt in row[:nidx]+tuple(pcols)+row[nidx+1:])+"\n")
gzipfile(ex,tablefile)
ex.add(tablefile+".gz",
description=set_file_descr('Combined_peak_quantifications.txt.gz',type='text',
step='summary'))
if run_meme:
from bbcflib.motif import parallel_meme
logfile.write("Starting MEME.\n");logfile.flush()
processed['meme'] = parallel_meme( ex, assembly,
peak_list.values(), name=peak_list.keys(),
chip=True, meme_args=['-meme-nmotifs','4','-meme-mod','zoops'],
via=via )
return processed
def chipseq_workflow(ex,
job_or_dict,
assembly,
script_path='',
logfile=sys.stdout,
via='lsf'):
"""Runs a chipseq workflow over bam files obtained by mapseq. Will optionally run ``macs`` and 'run_deconv'.
:param ex: a 'bein' execution environment to run jobs in,
:param job_or_dict: a 'Frontend' 'job' object, or a dictionary with key 'groups', 'files' and 'options' if applicable,
:param assembly: a genrep.Assembly object,
:param script_path: only needed if 'run_deconv' is in the job options, must point to the location of the R scripts.
Defaults ``macs`` parameters (overriden by ``job_or_dict['options']['macs_args']``) are set as follows:
* ``'-bw'``: 200 ('bandwith')
* ``'-m'``: 10,100 ('minimum and maximum enrichments relative to background or control')
The enrichment bounds will be computed from a Poisson threshold *T*, if available, as *(min(30,5*(T+1)),50*(T+1))*.
Returns a tuple of a dictionary with keys *group_id* from the job groups, *macs* and *deconv* if applicable and values file description dictionaries and a dictionary of *group_ids* to *names* used in file descriptions.
"""
options = {}
if logfile is None: logfile = sys.stdout
if isinstance(job_or_dict, frontend.Job):
options = job_or_dict.options
groups = job_or_dict.groups
mapseq_files = job_or_dict.files
elif isinstance(job_or_dict, dict) and 'groups' in job_or_dict:
if 'options' in job_or_dict:
options = job_or_dict['options']
groups = job_or_dict['groups']
for gid in groups.keys():
if not ('name' in groups[gid]):
groups[gid]['name'] = gid
mapseq_files = job_or_dict.get('files', {})
else:
raise TypeError(
"job_or_dict must be a frontend. Job object or a dictionary with key 'groups'."
)
merge_strands = int(options.get('merge_strands', -1))
suffixes = ["fwd", "rev"]
peak_deconvolution = options.get('peak_deconvolution', False)
if isinstance(peak_deconvolution, basestring):
peak_deconvolution = peak_deconvolution.lower() in ['1', 'true', 't']
run_meme = options.get('run_meme', False)
if isinstance(run_meme, basestring):
run_meme = run_meme.lower() in ['1', 'true', 't']
macs_args = options.get('macs_args', ["--bw", "200"])
b2w_args = options.get('b2w_args', [])
if not (isinstance(mapseq_files, dict)):
raise TypeError("Mapseq_files must be a dictionary.")
tests = []
controls = []
names = {'tests': [], 'controls': []}
read_length = []
p_thresh = {}
for gid, mapped in mapseq_files.iteritems():
group_name = groups[gid]['name']
if not (isinstance(mapped, dict)):
raise TypeError(
"Mapseq_files values must be dictionaries with keys *run_ids* or 'bam'."
)
if 'bam' in mapped:
mapped = {'_': mapped}
futures = {}
ptruns = []
for k in mapped.keys():
if not 'libname' in mapped[k]:
mapped[k]['libname'] = group_name + "_" + str(k)
if not 'stats' in mapped[k]:
futures[k] = mapseq.bamstats.nonblocking(ex,
mapped[k]["bam"],
via=via)
if mapped[k].get('poisson_threshold', -1) > 0:
ptruns.append(mapped[k]['poisson_threshold'])
if len(ptruns) > 0:
p_thresh['group_name'] = sum(ptruns) / len(ptruns)
for k in futures.keys():
mapped[k]['stats'] = f.wait()
if len(mapped) > 1:
bamfile = mapseq.merge_bam(ex, [m['bam'] for m in mapped.values()])
else:
bamfile = mapped.values()[0]['bam']
if groups[gid]['control']:
controls.append(bamfile)
names['controls'].append((gid, group_name))
else:
tests.append(bamfile)
names['tests'].append((gid, group_name))
read_length.append(mapped.values()[0]['stats']['read_length'])
genome_size = mapped.values()[0]['stats']['genome_size']
if len(controls) < 1:
controls = [None]
names['controls'] = [(0, None)]
logfile.write("Starting MACS.\n")
logfile.flush()
processed = {
'macs':
add_macs_results(ex,
read_length,
genome_size,
tests,
ctrlbam=controls,
name=names,
poisson_threshold=p_thresh,
macs_args=macs_args,
via=via)
}
logfile.write("Done MACS.\n")
logfile.flush()
peak_list = {}
chrlist = assembly.chrmeta
## select only peaks with p-val <= 1e-0.6 = .25 => score = -10log10(p) >= 6
_select = {'score': (6, sys.maxint)}
_fields = ['chr', 'start', 'end', 'name', 'score']
for i, name in enumerate(names['tests']):
if len(names['controls']) < 2:
ctrl = (name, names['controls'][0])
macsbed = track(processed['macs'][ctrl] + "_summits.bed",
chrmeta=chrlist,
fields=_fields).read(selection=_select)
else:
macsbed = concatenate([
apply(track(processed['macs'][(name, x)] + "_summits.bed",
chrmeta=chrlist,
fields=_fields).read(selection=_select),
'name',
lambda __n, _n=xn: "%s:%i" % (__n, _n))
for xn, x in enumerate(names['controls'])
])
##############################
macs_neighb = neighborhood(macsbed, before_start=150, after_end=150)
peak_list[name] = unique_filename_in() + ".sql"
macs_final = track(peak_list[name],
chrmeta=chrlist,
info={'datatype': 'qualitative'},
fields=['start', 'end', 'name', 'score'])
macs_final.write(fusion(macs_neighb), clip=True)
macs_final.close()
##############################
merged_wig = {}
options['read_extension'] = int(
options.get('read_extension') or read_length[0])
if options['read_extension'] < 1:
options['read_extension'] = read_length[0]
make_wigs = merge_strands >= 0 or options['read_extension'] > 100
if options['read_extension'] > 100: options['read_extension'] = 50
for gid, mapped in mapseq_files.iteritems():
# if groups[gid]['control']: continue
group_name = groups[gid]['name']
wig = []
for m in mapped.values():
if make_wigs or not ('wig' in m) or len(m['wig']) < 2:
output = mapseq.parallel_density_sql(
ex,
m["bam"],
assembly.chrmeta,
nreads=m["stats"]["total"],
merge=-1,
read_extension=options['read_extension'],
convert=False,
b2w_args=b2w_args,
via=via)
wig.append(dict((s, output + s + '.sql') for s in suffixes))
else:
wig.append(m['wig'])
if len(wig) > 1:
merged_wig[group_name] = dict(
(s, merge_sql(ex, [x[s] for x in wig], via=via))
for s in suffixes)
else:
merged_wig[group_name] = wig[0]
if peak_deconvolution:
##############################
def _filter_deconv(stream, pval):
ferr = re.compile(r';FERR=([\d\.]+)$')
return FeatureStream(
((x[0], ) + ((x[2] + x[1]) / 2 - 150,
(x[2] + x[1]) / 2 + 150) + x[3:]
for x in stream if "FERR=" in x[3]
and float(ferr.search(x[3]).groups()[0]) <= pval),
fields=stream.fields)
##############################
processed['deconv'] = {}
for name in names['tests']:
logfile.write(name[1] + " deconvolution.\n")
logfile.flush()
if len(names['controls']) < 2:
ctrl = (name, names['controls'][0])
macsbed = processed['macs'][ctrl] + "_peaks.bed"
else:
macsbed = intersect_many_bed(ex, [
processed['macs'][(name, x)] + "_peaks.bed"
for x in names['controls']
],
via=via)
deconv = run_deconv(ex,
merged_wig[name[1]],
macsbed,
assembly.chrmeta,
options['read_extension'],
script_path,
via=via)
peak_list[name] = unique_filename_in() + ".bed"
trbed = track(deconv['peaks']).read()
with track(peak_list[name], chrmeta=chrlist,
fields=trbed.fields) as bedfile:
bedfile.write(fusion(_filter_deconv(trbed, 0.65)))
ex.add(deconv['peaks'],
description=set_file_descr(name[1] + '_peaks.sql',
type='sql',
step='deconvolution',
groupId=name[0]))
ex.add(deconv['profile'],
description=set_file_descr(name[1] + '_deconv.sql',
type='sql',
step='deconvolution',
groupId=name[0]))
bigwig = unique_filename_in()
try:
convert(deconv['profile'], (bigwig, "bigWig"))
ex.add(bigwig,
description=set_file_descr(name[1] + '_deconv.bw',
type='bigWig',
ucsc='1',
step='deconvolution',
groupId=name[0]))
except OSError as e:
logfile.write(str(e))
logfile.flush()
ex.add(deconv['pdf'],
description=set_file_descr(name[1] + '_deconv.pdf',
type='pdf',
step='deconvolution',
groupId=name[0]))
processed['deconv'][name] = deconv
##############################
def _join_macs(stream, xlsl, _f):
def _macs_row(_s):
for _p in _s:
for _n in _p[3].split("|"):
if len(xlsl) == 1:
nb = int(
_n.split(";")[0][13:]) if _n[:3] == "ID=" else int(
_n[10:])
yield _p + xlsl[0][nb - 1][1:]
else:
nb = _n.split(
";")[0][13:] if _n[:3] == "ID=" else _n[10:]
nb = nb.split(":")
yield _p + xlsl[int(nb[1])][int(nb[0]) - 1][1:]
return FeatureStream(_macs_row(stream), fields=_f)
##############################
peakfile_list = []
for name, plist in peak_list.iteritems():
ptrack = track(plist,
chrmeta=chrlist,
fields=["chr", "start", "end", "name", "score"])
peakfile = unique_filename_in()
xlsh, xlsl = parse_MACS_xls([
processed['macs'][(name, _c)] + "_peaks.xls"
for _c in names['controls']
])
try:
###### if assembly doesn't have annotations, we skip the "getNearestFeature" but still go through "_join_macs"
assembly.gene_track()
_fields = ['chr','start','end','name','score','gene','location_type','distance']\
+["MACS_%s"%h for h in xlsh[1:5]]+xlsh[5:]
peakout = track(peakfile,
format='txt',
chrmeta=chrlist,
fields=_fields)
peakout.make_header("#" + "\t".join([
'chromosome', 'start', 'end', 'info', 'peak_height', 'gene(s)',
'location_type', 'distance'
] + _fields[8:]))
for chrom in assembly.chrnames:
_feat = assembly.gene_track(chrom)
peakout.write(_join_macs(
getNearestFeature(ptrack.read(selection=chrom), _feat),
xlsl, _fields),
mode='append')
except ValueError:
_fields = ['chr', 'start', 'end', 'name', 'score'
] + ["MACS_%s" % h for h in xlsh[1:5]] + xlsh[5:]
peakout = track(peakfile,
format='txt',
chrmeta=chrlist,
fields=_fields)
peakout.make_header("#" + "\t".join(
['chromosome', 'start', 'end', 'info', 'peak_height'] +
_fields[8:]))
for chrom in assembly.chrnames:
peakout.write(_join_macs(ptrack.read(selection=chrom), xlsl,
_fields),
mode='append')
peakout.close()
gzipfile(ex, peakfile)
peakfile_list.append(
track(peakfile + ".gz", format='txt', fields=_fields))
ex.add(peakfile + ".gz",
description=set_file_descr(name[1] + '_annotated_peaks.txt.gz',
type='text',
step='annotation',
groupId=name[0]))
stracks = [
track(wig, info={'name': name + "_" + st})
for name, wigdict in merged_wig.iteritems()
for st, wig in wigdict.iteritems()
]
tablefile = unique_filename_in()
with open(tablefile, "w") as _tf:
_pnames = [
"MACS_%s_vs_%s" % (_s[1], _c[1]) if _c[1] else "MACS_%s" % _s[1]
for _s in names['tests'] for _c in names['controls']
]
_tf.write("\t".join([
'#chromosome',
'start',
'end',
] + _pnames + [s.name for s in stracks]) + "\n")
#### need to do something about peak origin (split names, write to separate columns?)
for chrom in assembly.chrnames:
pk_lst = [
apply(pt.read(chrom, fields=['chr', 'start', 'end', 'name']),
'name',
lambda __n, _n=npt: "%s:%i" % (__n, _n))
for npt, pt in enumerate(peakfile_list)
]
features = fusion(
concatenate(pk_lst,
fields=['chr', 'start', 'end', 'name'],
remove_duplicates=True,
group_by=['chr', 'start', 'end']))
sread = [sig.read(chrom) for sig in stracks]
quantifs = score_by_feature(sread, features, method='sum')
nidx = quantifs.fields.index('name')
_ns = len(tests)
_nc = len(controls)
with open(tablefile, "a") as _tf:
for row in quantifs:
pcols = [''] * _ns * _nc
_rnsplit = row[nidx].split(":")
_n1 = _rnsplit[0]
_k = 0
while (_k < len(_rnsplit) - 1 - int(_nc > 1)):
if _nc > 1:
_k += 2
_n2 = _rnsplit[_k - 1]
_n = _rnsplit[_k].split("|")
pcols[int(_n[0]) * _nc + int(_n2)] = _n1
else:
_k += 1
_n = _rnsplit[_k].split("|")
pcols[int(_n[0])] = _n1
_n1 = "|".join(_n[1:])
_tf.write("\t".join(
str(tt)
for tt in row[:nidx] + tuple(pcols) + row[nidx + 1:]) +
"\n")
gzipfile(ex, tablefile)
ex.add(tablefile + ".gz",
description=set_file_descr('Combined_peak_quantifications.txt.gz',
type='text',
step='summary'))
if run_meme:
from bbcflib.motif import parallel_meme
logfile.write("Starting MEME.\n")
logfile.flush()
processed['meme'] = parallel_meme(
ex,
assembly,
peak_list.values(),
name=peak_list.keys(),
chip=True,
meme_args=['-meme-nmotifs', '4', '-meme-mod', 'zoops'],
via=via)
return processed
