def makeclust(ID, datatype, WORK):
" load tier 2 hits (names,direction) into a Dic with seeds as keys"
Uin = open(WORK+"prefix/cat.u")
Fseeds = {}
for line in [line.split("\t") for line in Uin.readlines()]:
if line[1] not in Fseeds:
Fseeds[line[1]] = [(line[0],line[4])]
else:
Fseeds[line[1]].append((line[0],line[4]))
Uin.close()
" load tier 1 hits (names,direction) into a Dictionary with seeds as keys"
FS = glob.glob(WORK+"prefix/cat.u_*")
Useeds = {}
for f in FS:
infile = open(f)
for line in [line.split("\t") for line in infile.readlines()]:
if line[1] not in Useeds:
Useeds[line[1]] = [(line[0],line[4])]
else:
Useeds[line[1]].append((line[0],line[4]))
infile.close()
" Make one dictionary with combining Fseeds and Useeds matching to Fseeds"
D = {}
for seed in Fseeds:
# add matches to seed to D[seed]
Fhits = Useeds.get(seed)
# add matches to hits to seed to D[seed]
Mhits = []
for hit in Fseeds[seed]:
Mhits.append(hit)
ugh = Useeds.get(hit[0])
if ugh:
if hit[1] == "-":
if len(ugh) == 1:
Mhits += [(ugh[0][0],flip(ugh[0][1]))]
elif len(ugh) > 1:
for child in ugh:
Mhits += [(child[0], flip(child[1]))]
else:
Mhits += ugh
if Fhits:
D[(seed,'s')] = Fhits+Mhits
else:
D[(seed,'s')] = Mhits
" load seeds of tier 2 into D and set its Useed hits"
f = open(WORK+"prefix/cat._tempU")
lines = f.readlines()
for line in lines:
if ">" in line:
if (line.strip()[1:],'s') not in D:
if Useeds.get(line.strip()[1:]):
D[(line.strip()[1:],'s')] = Useeds.get(line.strip()[1:])
f.close()
" load .consens files into Dics "
FS = glob.glob(WORK+"clust"+ID+"/cat.consens_*.gz")
Seqs = {}
for f in FS:
with gzip.open(f) as ff:
k = itertools.izip(*[iter(ff)]*2)
while 1:
try: a = k.next()
except StopIteration: break
Seqs[a[0].strip()] = a[1].strip()
" write clust file "
outfile = gzip.open(WORK+"prefix/cat.clust_.gz", 'w')
for i in D:
thisclust = []
outfile.write(">"+i[0]+'\n'+Seqs[">"+i[0]].upper()+'\n')
thisclust.append(">"+i[0]+'\n'+Seqs[">"+i[0]].upper())
for m in D[i]:
if ">"+m[0]+'\n'+Seqs[">"+m[0]].upper() not in thisclust:
if m[1] == "-":
outfile.write(">"+m[0]+'\n'+comp(Seqs[">"+m[0]].upper())[::-1]+'\n')
thisclust.append(">"+m[0]+'\n'+comp(Seqs[">"+m[0]].upper())[::-1])
else:
outfile.write(">"+m[0]+'\n'+Seqs[">"+m[0]].upper()+'\n')
thisclust.append(">"+m[0]+'\n'+Seqs[">"+m[0]].upper())
outfile.write("//\n")
outfile.close()
def makeclust(ID, datatype, WORK):
" load tier 2 hits (names,direction) into a Dic with seeds as keys"
Uin = open(WORK + "prefix/cat.u")
Fseeds = {}
for line in [line.split("\t") for line in Uin.readlines()]:
if line[1] not in Fseeds:
Fseeds[line[1]] = [(line[0], line[4])]
else:
Fseeds[line[1]].append((line[0], line[4]))
Uin.close()
" load tier 1 hits (names,direction) into a Dictionary with seeds as keys"
FS = glob.glob(WORK + "prefix/cat.u_*")
Useeds = {}
for f in FS:
infile = open(f)
for line in [line.split("\t") for line in infile.readlines()]:
if line[1] not in Useeds:
Useeds[line[1]] = [(line[0], line[4])]
else:
Useeds[line[1]].append((line[0], line[4]))
infile.close()
" Make one dictionary with combining Fseeds and Useeds matching to Fseeds"
D = {}
for seed in Fseeds:
# add matches to seed to D[seed]
Fhits = Useeds.get(seed)
# add matches to hits to seed to D[seed]
Mhits = []
for hit in Fseeds[seed]:
Mhits.append(hit)
ugh = Useeds.get(hit[0])
if ugh:
if hit[1] == "-":
if len(ugh) == 1:
Mhits += [(ugh[0][0], flip(ugh[0][1]))]
elif len(ugh) > 1:
for child in ugh:
Mhits += [(child[0], flip(child[1]))]
else:
Mhits += ugh
if Fhits:
D[(seed, 's')] = Fhits + Mhits
else:
D[(seed, 's')] = Mhits
" load seeds of tier 2 into D and set its Useed hits"
f = open(WORK + "prefix/cat._tempU")
lines = f.readlines()
for line in lines:
if ">" in line:
if (line.strip()[1:], 's') not in D:
if Useeds.get(line.strip()[1:]):
D[(line.strip()[1:], 's')] = Useeds.get(line.strip()[1:])
f.close()
" load .consens files into Dics "
FS = glob.glob(WORK + "clust" + ID + "/cat.consens_*.gz")
Seqs = {}
for f in FS:
with gzip.open(f) as ff:
k = itertools.izip(*[iter(ff)] * 2)
while 1:
try:
a = k.next()
except StopIteration:
break
Seqs[a[0].strip()] = a[1].strip()
" write clust file "
outfile = gzip.open(WORK + "prefix/cat.clust_.gz", 'w')
for i in D:
thisclust = []
outfile.write(">" + i[0] + '\n' + Seqs[">" + i[0]].upper() + '\n')
thisclust.append(">" + i[0] + '\n' + Seqs[">" + i[0]].upper())
for m in D[i]:
if ">" + m[0] + '\n' + Seqs[">" + m[0]].upper() not in thisclust:
if m[1] == "-":
outfile.write(">" + m[0] + '\n' +
comp(Seqs[">" + m[0]].upper())[::-1] + '\n')
thisclust.append(">" + m[0] + '\n' +
comp(Seqs[">" + m[0]].upper())[::-1])
else:
outfile.write(">" + m[0] + '\n' +
Seqs[">" + m[0]].upper() + '\n')
thisclust.append(">" + m[0] + '\n' +
Seqs[">" + m[0]].upper())
outfile.write("//\n")
outfile.close()
def rawedit(WORK, infile, CUT, pN, trimkeep, strict, Q, datatype):
""" three functions:
(1) replaces low quality base calls with Ns,
(2) checks for adapter sequence if strict set to 1 or 2 """
if "," in CUT:
CUT1, CUT2 = CUT.split(',')
else:
CUT1 = CUT2 = CUT
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile, 'r')
n = str(infile.split('/')[-1]).replace("_R1.", ".")
while n.split(".")[-1] in ["fastq", "fastQ", "gz", "fq", "FastQ"]:
n = n.replace('.' + n.split(".")[-1], "")
k = itertools.izip(*[iter(f)] * 4)
writing_r = []
writing_c = []
orig = keep = keepcut = 0
handle = WORK + 'edits/' + str(n) + ".edit"
while 1:
try:
d = k.next()
except StopIteration:
break
orig += 1
SS = d[1].strip()
ph = map(ord, d[3].strip('\n'))
offset = int(Q)
phred = map(lambda x: x - offset, ph)
seq = ["N"] * len(phred)
for base in range(len(phred)):
if base >= len(CUT1): ## don't quality check cut site
if phred[base] >= 20: ## quality threshold
try:
seq[base] = SS[base]
except IndexError:
None
else:
seq[base] = "N"
else:
if unambar(CUT1):
seq[base] = unambar(CUT1)[0][base]
else:
seq[base] = CUT1[base]
#try: seq[base] = SS[base]
#except IndexError:
# None
if not orig % 5000:
if trimkeep:
" write full length and fragment reads "
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
outfile.write("".join([z for z in writing_c]))
else:
" write only full length reads "
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
writing_c = []
s = "".join(seq)
wheretocut1 = None
if strict:
wheretocut1 = Afilter(comp(CUT2)[::-1], s, strict)
s = s[:wheretocut1]
if datatype == 'merged':
" remove extra forward base so forwards match reverse length"
s = s[:-1]
if s.count("N") <= pN: ## max allowed Ns
if len(s) >= max(
32, trimkeep): ## if read is trimmed, must be minlen long
if wheretocut1: ## if it was trimmed...
writing_c.append(">" + n + "_" + str(keepcut) + "_c1" +
"\n" + s + "\n")
keepcut += 1
else:
writing_r.append(">" + n + "_" + str(keep) + "_r1" + "\n" +
s + "\n")
keep += 1
if trimkeep:
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
outfile.write("".join([z for z in writing_c]))
else:
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
writing_c = []
f.close()
sys.stderr.write(".")
if not trimkeep:
keepcut = 0
return [
handle.split("/")[-1].replace(".edit", ""),
str(orig),
str(keep),
str(keepcut)
]
def rawedit(WORK, infile, CUT, pN, trimkeep, strict, Q, datatype):
""" three functions:
(1) replaces low quality base calls with Ns,
(2) checks for adapter sequence if strict set to 1 or 2 """
if "," in CUT:
CUT1,CUT2 = CUT.split(',')
else:
CUT1=CUT2=CUT
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile,'r')
n = str(infile.split('/')[-1]).replace("_R1.",".")
while n.split(".")[-1] in ["fastq","fastQ","gz","fq","FastQ"]:
n = n.replace('.'+n.split(".")[-1], "")
k = itertools.izip(*[iter(f)]*4)
writing_r = []
writing_c = []
orig = keep = keepcut = 0
handle = WORK+'edits/'+str(n)+".edit"
while 1:
try: d = k.next()
except StopIteration: break
orig += 1
SS = d[1].strip()
ph = map(ord,d[3].strip('\n'))
offset = int(Q)
phred = map(lambda x:x-offset,ph)
seq = ["N"]*len(phred)
for base in range(len(phred)):
if base >= len(CUT1): ## don't quality check cut site
if phred[base] >= 20: ## quality threshold
try: seq[base] = SS[base]
except IndexError:
None
else:
seq[base] = "N"
else:
if unambar(CUT1):
seq[base] = unambar(CUT1)[0][base]
else:
seq[base] = CUT1[base]
#try: seq[base] = SS[base]
#except IndexError:
# None
if not orig % 5000:
if trimkeep:
" write full length and fragment reads "
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
outfile.write("".join([z for z in writing_c]))
else:
" write only full length reads "
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
writing_c = []
s = "".join(seq)
wheretocut1 = None
if strict:
wheretocut1 = Afilter(comp(CUT2)[::-1],s,strict)
s = s[:wheretocut1]
if datatype == 'merged':
" remove extra forward base so forwards match reverse length"
s = s[:-1]
if s.count("N") <= pN: ## max allowed Ns
if len(s) >= max(32,trimkeep): ## if read is trimmed, must be minlen long
if wheretocut1: ## if it was trimmed...
writing_c.append(">"+n+"_"+str(keepcut)+"_c1"+"\n"+s+"\n")
keepcut += 1
else:
writing_r.append(">"+n+"_"+str(keep)+"_r1"+"\n"+s+"\n")
keep += 1
if trimkeep:
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
outfile.write("".join([z for z in writing_c]))
else:
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
writing_c = []
f.close()
sys.stderr.write(".")
if not trimkeep:
keepcut = 0
return [handle.split("/")[-1].replace(".edit",""),str(orig),str(keep),str(keepcut)]
def rawedit(WORK, infile, CUT, pN, trimkeep, strict, Q):
""" three functions:
(1) replaces low quality base calls with Ns,
(2) checks for adapter sequence if strict set to 1 or 2 """
if "," in CUT:
CUT1, CUT2 = CUT.split(',')
else:
CUT1 = CUT2 = CUT
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile, 'r')
" remove name suffix"
n = str(infile.split('/')[-1]).replace("_R1.", ".")
while n.split(".")[-1] in ["fastq", "fastQ", "gz", "fq", "FastQ"]:
n = n.replace('.' + n.split(".")[-1], "")
" read infile 4 lines at a time, setup counters and lists"
k = itertools.izip(*[iter(f)] * 4)
writing_r = []
writing_c = []
orig = keep = keepcut = 0
handle = WORK + 'edits/' + str(n) + ".edit"
" do a test run on first 1000 reads to find if extra bases on right end of reads"
rightend = []
while len(rightend) < 1000:
try:
d = k.next()
except StopIteration:
break
s = "".join(d[1].strip())
" cutters "
find1 = CUT1
find2 = comp(CUT2)[::-1]
" are cutters found on both ends? A correct merge"
a = s[:len(find1)]
b = s[-len(find2) - 2:] ## w/ wiggle room
if (find1 in a) and (find2 in b):
xtra = s.rindex(find2) + len(find2)
rightend.append(len(s) - xtra)
" find most common element in rightend "
if rightend:
a = most_common(rightend)
if a > 3:
Roffset = 0
else:
Roffset = a
else:
Roffset = 0
" reset iterable "
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile, 'r')
k = itertools.izip(*[iter(f)] * 4)
" iterate over each read "
while 1:
try:
d = k.next()
except StopIteration:
break
orig += 1
SS = d[1].strip()
" apply Phred Q filter "
ph = map(ord, d[3].strip('\n'))
offset = int(Q)
phred = map(lambda x: x - offset, ph)
seq = ["N"] * len(phred)
for base in range(len(phred)):
"don't quality check cut sites "
if (base >= len(CUT1)) and (base < len(phred) - len(CUT2)):
if phred[base] >= 20:
try:
seq[base] = SS[base]
except IndexError:
None
else:
seq[base] = "N"
else:
try:
seq[base] = SS[base]
except IndexError:
None
" write to file "
if not orig % 5000:
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
s = "".join(seq)
wheretocut = [None, None, None]
" filter for N"
if s.count("N") <= pN:
" apply filter for Adapters "
find1 = CUT1
find2 = comp(CUT2)[::-1]
if "trim" in d[0]:
" filters for non-merged, trimmed reads from s2 "
if (find1 in s[:len(find1)]) or (find2 in s[len(find2) - 2:]):
None
else:
" CUT1 rarely missing, CUT2 sometimes missing"
s = s[:-len(CUT2) - Roffset]
else:
" merged reads. Are cutters found on both ends? A correct merge"
a = s[:len(find1)]
b = s[-len(find2) - 2:] ## w/ wiggle room
if (find1 in a) and (find2 in b):
" find end of read2 "
xtra = s.rindex(find2) + len(find2)
wheretocut = [None, len(s) - Roffset, 'complete']
else:
" look for CUT2 from right side "
if find2 in s[
len(s) /
2:]: ## check that this is a good general number...
a = s.rindex(find2) + len(find2)
wheretocut = [None, a, 'find2 in s']
else:
"couldn't find cut2, maybe has error, look for adapter"
if 'AGATCG' in s:
a = s.rindex('AGATCG') - len(CUT2)
wheretocut = [None, a, 'AGATCG in s']
else:
if "TCGGAAG" in s:
a = s.rindex('TCGGAAG') - len(CUT2) - 3
wheretocut = [None, a, 'TCGGAAG in s']
else:
"no sign of overshoot to right --->"
" look for overshoot on left <---- "
wheretocut = [None, len(s) - Roffset, "None"]
" look for CUT1 from left side "
if CUT1 in s:
a = s.index(CUT1)
wheretocut[0] = a
else:
"exclude read"
wheretocut[0] = wheretocut[1]
w1, w2, reason = wheretocut
if len(s[w1:w2]) > trimkeep:
#print s[w1:w2], reason, len(s[w1:w2]), trimkeep
s = s[w1:w2]
else:
s = ""
if len(s) >= max(
36, trimkeep): ## if read is trimmed, must be minlen long
writing_r.append(">" + n + "_" + str(keep) + "_r1" + "\n" + s +
"\n")
keep += 1
with open(WORK + 'edits/' + str(n) + ".edit", 'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
f.close()
sys.stderr.write(".")
if not trimkeep:
keepcut = 0
return [
handle.split("/")[-1].replace(".edit", ""),
str(orig),
str(keep),
str(keepcut)
]
def rawedit(WORK, infile, CUT, pN, trimkeep, strict, Q):
""" three functions:
(1) replaces low quality base calls with Ns,
(2) checks for adapter sequence if strict set to 1 or 2 """
if "," in CUT:
CUT1,CUT2 = CUT.split(',')
else:
CUT1=CUT2=CUT
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile,'r')
" remove name suffix"
n = str(infile.split('/')[-1]).replace("_R1.",".")
while n.split(".")[-1] in ["fastq","fastQ","gz","fq","FastQ"]:
n = n.replace('.'+n.split(".")[-1], "")
" read infile 4 lines at a time, setup counters and lists"
k = itertools.izip(*[iter(f)]*4)
writing_r = []
writing_c = []
orig = keep = keepcut = 0
handle = WORK+'edits/'+str(n)+".edit"
" do a test run on first 1000 reads to find if extra bases on right end of reads"
rightend = []
while len(rightend) < 1000:
try: d = k.next()
except StopIteration: break
s = "".join(d[1].strip())
" cutters "
find1 = CUT1
find2 = comp(CUT2)[::-1]
" are cutters found on both ends? A correct merge"
a = s[:len(find1)]
b = s[-len(find2)-2:] ## w/ wiggle room
if (find1 in a) and (find2 in b) :
xtra = s.rindex(find2)+len(find2)
rightend.append(len(s)-xtra)
" find most common element in rightend "
if rightend:
a = most_common(rightend)
if a>3:
Roffset = 0
else:
Roffset = a
else:
Roffset = 0
" reset iterable "
if ".gz" in infile:
f = gzip.open(infile, 'r')
else:
f = open(infile,'r')
k = itertools.izip(*[iter(f)]*4)
" iterate over each read "
while 1:
try: d = k.next()
except StopIteration: break
orig += 1
SS = d[1].strip()
" apply Phred Q filter "
ph = map(ord,d[3].strip('\n'))
offset = int(Q)
phred = map(lambda x:x-offset,ph)
seq = ["N"]*len(phred)
for base in range(len(phred)):
"don't quality check cut sites "
if (base >= len(CUT1)) and (base < len(phred)-len(CUT2)):
if phred[base] >= 20:
try: seq[base] = SS[base]
except IndexError:
None
else:
seq[base] = "N"
else:
try: seq[base] = SS[base]
except IndexError:
None
" write to file "
if not orig % 5000:
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
s = "".join(seq)
wheretocut = [None,None,None]
" filter for N"
if s.count("N") <= pN:
" apply filter for Adapters "
find1 = CUT1
find2 = comp(CUT2)[::-1]
if "trim" in d[0]:
" filters for non-merged, trimmed reads from s2 "
if (find1 in s[:len(find1)]) or (find2 in s[len(find2)-2:]):
None
else:
" CUT1 rarely missing, CUT2 sometimes missing"
s = s[:-len(CUT2)-Roffset]
else:
" merged reads. Are cutters found on both ends? A correct merge"
a = s[:len(find1)]
b = s[-len(find2)-2:] ## w/ wiggle room
if (find1 in a) and (find2 in b) :
" find end of read2 "
xtra = s.rindex(find2)+len(find2)
wheretocut = [None, len(s)-Roffset, 'complete']
else:
" look for CUT2 from right side "
if find2 in s[len(s)/2:]: ## check that this is a good general number...
a = s.rindex(find2)+len(find2)
wheretocut = [None, a, 'find2 in s']
else:
"couldn't find cut2, maybe has error, look for adapter"
if 'AGATCG' in s:
a = s.rindex('AGATCG')-len(CUT2)
wheretocut = [None, a, 'AGATCG in s']
else:
if "TCGGAAG" in s:
a = s.rindex('TCGGAAG')-len(CUT2)-3
wheretocut = [None, a, 'TCGGAAG in s']
else:
"no sign of overshoot to right --->"
" look for overshoot on left <---- "
wheretocut = [None, len(s)-Roffset, "None"]
" look for CUT1 from left side "
if CUT1 in s:
a = s.index(CUT1)
wheretocut[0] = a
else:
"exclude read"
wheretocut[0] = wheretocut[1]
w1,w2,reason = wheretocut
if len(s[w1:w2]) > trimkeep:
#print s[w1:w2], reason, len(s[w1:w2]), trimkeep
s = s[w1:w2]
else:
s = ""
if len(s) >= max(36,trimkeep): ## if read is trimmed, must be minlen long
writing_r.append(">"+n+"_"+str(keep)+"_r1"+"\n"+s+"\n")
keep += 1
with open(WORK+'edits/'+str(n)+".edit",'a') as outfile:
outfile.write("".join([z for z in writing_r]))
writing_r = []
f.close()
sys.stderr.write(".")
if not trimkeep:
keepcut = 0
return [handle.split("/")[-1].replace(".edit",""),str(orig),str(keep),str(keepcut)]
