def pheno_general_stats(obj, model):
info = ""
obj_ = load_cv_obj(obj)
info += "%s\nPehnotype: %s\n" % (sep_str, obj_.Y_name)
# number of samples (after sample intersection)
info += "\tNumber of samples without missing pheno: %d\n" % len(
set(read_id_list(obj_.samples)))
# pheno. stats (after sample intersection)
info += "\t0:%d,1:%d | 0:%.2f,1:%.2f\n" % (
obj_.Y_stat['class_num']['0'], obj_.Y_stat['class_num']['1'],
obj_.Y_stat['class_pct']['0'], obj_.Y_stat['class_pct']['1'])
# pheno check
if obj_.Y_check:
# k and lambda
k = read_k(obj_.full['eig']['eig.k'])
l = read_lambda(obj_.full['eig']['eig.lambda'])
info += "EIGENSTRAT\n\tFull: k=%d, lambda=%.5f\n" % (k, l)
for rep in obj_.cv.keys():
info += "\tRep %d" % (rep)
for fold in obj_.cv[rep].keys():
k = read_k(obj_.cv[rep][fold]['eig']['eig.k'])
l = read_lambda(obj_.cv[rep][fold]['eig']['eig.lambda'])
info += " | fold %d: k=%d, lambda=%.5f" % (fold, k, l)
info += "\n"
# CV selected features
n = len(set(read_id_list(obj_.full['features_sel'])))
info += "Selected features:\n\tFull: %d\n" % n
for rep in obj_.cv.keys():
info += "\tRep %d" % (rep)
for fold in obj_.cv[rep].keys():
n = len(set(read_id_list(obj_.cv[rep][fold]['features_sel'])))
info += " | fold %d: %d" % (fold, n)
info += "\n"
# CV model
s = ';'.join(list(set(read_id_list(obj_.full[model]["combi.txt"]))))
info += "Models\n\tFull: %s\n" % s
for rep in obj_.cv.keys():
for fold in obj_.cv[rep].keys():
s = ';'.join(
list(
set(
read_id_list(
obj_.cv[rep][fold][model]["combi.txt"]))))
info += "\tRep %d, fold %d: %s\n" % (rep, fold, s)
# CV eval. reps
info += 'Mssing fold pred. results:'
for rep in obj_.cv.keys():
for fold in obj_.cv[rep].keys():
f = obj_.cv[rep][fold][model]['pred.csv']
if not os.path.isfile(f) or os.stat(f).st_size == 0:
info += "Rep %d, fold %d: no model prediction results\n" % (
rep, fold)
info += '\n'
else:
info += 'Check not passed\n'
info += "%s\n" % sep_str
return info
def bin_to_eig_pheno(pheno_file,
pheno_name,
pheno_ofile,
sample_file=None,
miss='NA'):
samples = None
if sample_file is not None:
samples = set(read_id_list(sample_file))
# Pheno
header = True
pheno_col = 0
with open(pheno_file, "r") as pheno, open(pheno_ofile, "w") as pheno_o:
for line in pheno:
line = line.rstrip('\n')
line = line.split('\t')
if header:
header = False
for i in range(0, len(line)):
if line[i] == pheno_name:
pheno_col = i + 1 # +1 because 1st field is sampleID
break
continue
assert pheno_col > 0
sampleID = line[0]
if samples is not None and sampleID not in samples:
continue
samplePh = line[pheno_col]
if samplePh == '1': samplePh = 'Case'
elif samplePh == '0': samplePh = 'Control'
elif samplePh == miss: samplePh = 'Ignore'
else:
sys.exit('Unknown phenotype: %s: %s: %s' %
(pheno_name, sampleID, samplePh))
pheno_o.write("\t".join([sampleID, 'U', samplePh]) +
"\n") #; pheno_o.flush()
def cv_pheno_stats(cv_obj):
# already done
if cv_obj.done['y_stats']:
return "SKIP: Pheno stat.s already computed"
cv_obj.Y_stat['class_num'] = {'0': 0, '1': 0}
cv_obj.Y_stat['class_pct'] = {'0': 0, '1': 0}
with open(cv_obj.Y_stat['file']) as infile:
for line in infile:
line = line.rstrip("\n")
line = line.split('\t')
if line[0] == 'miss':
cv_obj.Y_stat['miss'] = int(line[1])
elif line[0] == '0':
cv_obj.Y_stat['class_num']['0'] = int(line[1])
elif line[0] == '1':
cv_obj.Y_stat['class_num']['1'] = int(line[1])
else:
sys.exit("In Y stat.s file: unknown value %s" % line[0])
cv_obj.Y_stat['total'] = sum([
cv_obj.Y_stat['miss'], cv_obj.Y_stat['class_num']['0'],
cv_obj.Y_stat['class_num']['1']
])
samples = set(read_id_list(cv_obj.samples))
assert len(samples) == cv_obj.Y_stat[
'total'], "Have %d samples in %s but only %d as total from Y stat.s file %s" % (
len(samples), cv_obj.samples, cv_obj.Y_stat['total'],
cv_obj.Y_stat['file'])
assert cv_obj.Y_stat['miss'] == 0, "Missing pheno for %s" % cv_obj.Y_name
if (cv_obj.Y_stat['total'] - cv_obj.Y_stat['miss']) > 0:
cv_obj.Y_stat['class_pct'] = { \
'0' : 100.0 * float(cv_obj.Y_stat['class_num']['0']) / float(cv_obj.Y_stat['total']-cv_obj.Y_stat['miss']) ,\
'1' : 100.0 * float(cv_obj.Y_stat['class_num']['1']) / float(cv_obj.Y_stat['total']-cv_obj.Y_stat['miss']) \
}
cv_obj.done['y_stats'] = True
return "Computed pheno stat.s"
def cv_check_samples(in_samples_f, ex_samples_f, cv_obj):
if cv_obj.done['sample_check']:
return "SKIP: Samples already checked"
info = ""
in_samples = set(read_id_list(in_samples_f))
ex_samples = set(read_id_list(ex_samples_f))
# CV full:
cv_samples = set(read_id_list(cv_obj.full['samples']))
# no intersectoion with excluded
assert len(
cv_samples.intersection(ex_samples)
) == 0, "Intersection with excluded: Assertion error in %s" % cv_samples
# all in included
assert len(
cv_samples.difference(in_samples)
) == 0, "Set diff. with included: Assertion error in %s" % cv_samples
info += "CV %s (full): Sample list %s: %d entries\n" % (
cv_obj.Y_name, cv_obj.full['samples'], len(cv_samples))
# CV folds: only samples from samples in CV obj., print number
for rep in cv_obj.cv.keys():
for fold in cv_obj.cv[rep].keys():
train_samples = set(
read_id_list(cv_obj.cv[rep][fold]['samples_train']))
test_samples = set(
read_id_list(cv_obj.cv[rep][fold]['samples_test']))
# no intersection of train and test
assert len(train_samples.intersection(test_samples)
) == 0, "Assertion error in %s and %s" % (train_samples,
test_samples)
# together they should be the same as in full set
assert cv_samples == train_samples.union(
test_samples), "Assertion error in %s and %s" % (train_samples,
test_samples)
# number of samples
info += "CV %s (rep %d, fold %d): Sample list %s: %d entries\n" % (
cv_obj.Y_name, rep, fold,
cv_obj.cv[rep][fold]['samples_train'], len(train_samples))
info += "CV %s (rep %d, fold %d): Sample list %s: %d entries\n" % (
cv_obj.Y_name, rep, fold, cv_obj.cv[rep][fold]['samples_test'],
len(test_samples))
cv_obj.done['sample_check'] = True
return info
def cv_eig_convert(cv_obj, rep=None, fold=None, skip=False):
eig_geno = eig_snps = eig_pheno = eig_snps_rm = None
samples = features = features_pr = None
cv_obj_sub = None
if rep is None or fold is None:
cv_obj_sub = cv_obj.full
else:
cv_obj_sub = cv_obj.cv[rep][fold]
eig_geno = cv_obj_sub['eig']['eig.geno']
eig_snps = cv_obj_sub['eig']['eig.snps']
eig_snps_rm = cv_obj_sub['eig']['eig.snps.rm']
eig_pheno = cv_obj_sub['eig']['eig.pheno']
if rep is None or fold is None:
samples = cv_obj_sub['samples']
else:
samples = cv_obj_sub['samples_train']
features = cv_obj_sub['features']
features_pr = cv_obj_sub['features_pr']
if not skip:
bin_to_eig_geno_snp( \
geno_file=cv_obj.X_bin, \
geno_ofile=eig_geno, snp_ofile=eig_snps, \
sample_file=samples, feature_file=features, \
miss='NA' \
)
bin_to_eig_pheno( \
pheno_file=cv_obj.Y_file, \
pheno_name=cv_obj.Y_name, \
pheno_ofile=eig_pheno, \
sample_file=samples, \
miss='NA' \
)
snps = set(read_id_list(features))
snps_pr = set(read_id_list(features_pr))
snps_rm = snps.difference(snps_pr)
with open(eig_snps_rm, 'w') as ofile:
for snp in snps_rm:
ofile.write("rs%s\n" % snp)
def add_model_annot(obj, annot, odir, obname, model, f_type):
fields = None
if f_type == 'gff':
fields = gene_annot_fields
elif f_type == 'vcf':
fields = vcf_annot_fields
obj_ = load_cv_obj(obj)
if not obj_.Y_check: return
model_res = path.join(obj_.odir, "%s_total_perf.csv" % model)
if not path.isfile(model_res) or os.stat(model_res).st_size == 0:
return # no CV perf.
if not path.isfile(obj_.full[model]['combi.txt']): return # no/empty model
ofile = path.join(odir, "%s_%s_%s.csv" % (obname, obj_.Y_name_str, model))
perf_list = [
'ERR', 'ACC', 'B_ACC', 'SENS', 'SPEC', 'PREC', 'NPV', 'FPR', 'FNR',
'Fmeasure', 'gm_RS', 'gm_RP', 'AUC_ROC', 'AUC_PR'
]
perf_dict = dict.fromkeys(perf_list, None)
# read perf
with open(model_res) as ifile:
header = True
for line in ifile:
if not line: continue
line = line.rstrip('\n')
line = line.split('\t')
if header:
header = False
for i in range(0, len(line)):
if line[i] in perf_dict:
if perf_dict[line[i]] is None: perf_dict[line[i]] = {}
perf_dict[line[i]]['id'] = i
continue
if line[0] == 'mean':
for k in perf_dict.keys():
perf_dict[k]['value'] = line[perf_dict[k]['id']]
# read features
features = set(read_id_list(obj_.full[model]['combi.txt']))
# write file
with open(ofile, 'w') as of:
of.write("Feature\t%s\t%s\n" %
('\t'.join(fields), '\t'.join(perf_list)))
for feature in features:
of.write("%s\t%s\t%s\n" %
(feature, '\t'.join([annot[feature][f] for f in fields]),
'\t'.join([perf_dict[k]['value'] for k in perf_list])))
def cv_create_folds(cv_obj):
if cv_obj.done['cv_folds']:
return "SKIP: Folds already created"
info = ""
# did not pass the phenotype check
if not cv_obj.Y_check:
return "CV folds: %s did not pass pheno. check" % cv_obj.Y_name
# Samples to use
samples = set(read_id_list(cv_obj.samples))
# Y as array and sample IDs
y, y_samples = pheno_as_list(pheno_file=cv_obj.Y_file,
pheno_name=cv_obj.Y_name,
ignore_miss=True,
samples=samples)
y = numpy.array(y)
y_samples = numpy.array(y_samples) # need for indexing
for rep in cv_obj.cv.keys():
# Create folds
y_folds = cross_validation.StratifiedKFold(y=y,
n_folds=cv_obj.folds,
shuffle=True,
random_state=None)
# Save folds as lists of samples in train/test
fold = 1
for train_index, test_index in y_folds:
with open(cv_obj.cv[rep][fold]['samples_train'], 'w') as o_file:
o_file.write("\n".join(y_samples[train_index].tolist()) + "\n")
with open(cv_obj.cv[rep][fold]['samples_test'], 'w') as o_file:
o_file.write("\n".join(y_samples[test_index].tolist()) + "\n")
# Stats
y_fold_stats = pheno_class_stats(
pheno_file=cv_obj.Y_file,
pheno_name=cv_obj.Y_name,
samples=set(y_samples[train_index].tolist()))
info += "Rep %d, fold %d, train: %s\n" % (rep, fold, ' ; '.join(
[' - '.join([k, "%d" % v]) for k, v in y_fold_stats.items()]))
y_fold_stats = pheno_class_stats(
pheno_file=cv_obj.Y_file,
pheno_name=cv_obj.Y_name,
samples=set(y_samples[test_index].tolist()))
info += "Rep %d, fold %d, test: %s\n" % (rep, fold, ' ; '.join(
[' - '.join([k, "%d" % v]) for k, v in y_fold_stats.items()]))
fold += 1
cv_obj.done['cv_folds'] = True
return info
def bin_to_plink_pheno(pheno_file,
pheno_name,
pheno_ofile,
family="Fam",
sample_file=None,
miss='NA',
verbose=True):
if verbose: sys.stdout.write("Bin. pheno mat. to PLINK alt. pheno")
samples = None
if sample_file is not None:
samples = set(read_id_list(sample_file))
if verbose:
sys.stdout.write("Sample list contains %d unique IDs\n" %
len(samples))
# Pheno
header = True
pheno_col = 0
with open(pheno_file, "r") as pheno, open(pheno_ofile, "w") as pheno_o:
sys.stdout.write("\tOutput: %s in %s\n" % (pheno_name, pheno_ofile))
for line in pheno:
line = line.rstrip('\n')
line = line.split('\t')
if header:
header = False
for i in range(0, len(line)):
if line[i] == pheno_name:
pheno_col = i + 1 # +1 because 1s field is sampleID
break
continue
sampleID = line[0]
if samples is not None and sampleID not in samples:
continue
samplePh = line[pheno_col]
if samplePh == miss:
samplePh = '-9'
pheno_o.write("\t".join([family, sampleID, samplePh]) + "\n")
def bin_to_eig_geno_snp(geno_file,
geno_ofile,
snp_ofile,
sample_file=None,
feature_file=None,
miss='NA'):
samples = features = None
if sample_file is not None:
samples = set(read_id_list(sample_file))
if feature_file is not None:
features = set(read_id_list(feature_file))
# SNP
header = True
count = 1
found_features = 0
with open(geno_file, "r") as geno, open(snp_ofile, "w") as snp_o:
for line in geno:
if header:
header = False
continue
line = line.rstrip('\n')
snpID = line.split('\t')[0]
if features is not None and snpID not in features:
continue
found_features += 1
snp_o.write(
"\t".join(["rs" + snpID, "1", "0.0",
str(count), "", ""]) +
"\n") # EIGENSTRAT expects "rs<snpID>"
count += 1
assert (features is None) or (
found_features == len(features)
), "%s: expected %d, found %d" % (snp_file, len(features), found_features)
# Geno
header = True
sampleIDs = None
found_features = 0
with open(geno_file, "r") as geno, open(geno_ofile, "w") as geno_o:
for line in geno:
line = line.rstrip('\n')
line = line.split('\t')
if header:
header = False
sampleIDs = line
continue
snpID = line[0]
if features is not None and snpID not in features: continue
found_features += 1
found_samples = 0
for i in range(1, len(line)):
sampleID = sampleIDs[i - 1]
if (samples is not None and sampleID not in samples) or (
features is not None and snpID not in features):
continue
found_samples += 1
sampleAl = line[i]
if sampleAl == miss: continue #sampleAl = "9"
else:
geno_o.write("\t".join(["rs" +
snpID, sampleID, sampleAl]) + "\n")
assert (samples is None) or (
found_samples == len(samples)), "%s: expected %d, found %d" % (
geno_file, len(saples), found_samples)
assert (features is None) or (
found_features == len(features)
), "%s: expected %d, found %d" % (geno_file, len(features), found_features)
def bin_to_plink_ped_map(geno_file,
map_ofile,
ped_ofile,
family="Fam",
sample_file=None,
feature_file=None,
feature_cl_file=None,
miss='NA',
verbose=True):
if verbose: sys.stdout.write("Bin. feature mat. to PLINK PED/MAP")
samples = None
if sample_file is not None:
samples = set(read_id_list(sample_file))
if verbose:
sys.stdout.write("Sample list contains %d unique IDs\n" %
len(samples))
features = None
if feature_file is not None:
features = set(read_id_list(feature_file))
if verbose:
sys.stdout.write("Feature list contains %d unique IDs\n" %
len(features))
feature_cl = None
if feature_cl_file is not None:
feature_cl = read_feature_cl(feature_cl_file)
# MAP
header = True
count = 1
with open(geno_file, "r") as geno, open(map_ofile, "w") as map_o:
if verbose: sys.stdout.write("\tOutput: %s\n" % map_ofile)
for line in geno:
if header:
header = False
continue
line = line.rstrip('\n')
snpID = line.split('\t')[0]
snpChr = "0"
snpDis = "0"
snpPos = str(count)
if features is not None and snpID not in features:
continue
if feature_cl is not None:
snpChr = feature_cl[snpID]
map_o.write("\t".join([snpChr, snpID, snpDis, snpPos]) + "\n")
#map_o.flush()
count += 1
# PED
header = True
sample_dict = None
sample_IDs = None
with open(geno_file, "r") as geno:
if verbose: sys.stdout.write("\tOutput: %s\n" % ped_ofile)
for line in geno:
line = line.rstrip('\n')
line = line.split('\t')
if header:
header = False
sample_IDs = line
sample_dict = dict.fromkeys(sample_IDs, "")
continue
snpID = line[0]
for i in range(1, len(line)):
sampleID = sample_IDs[i - 1]
if samples is not None and sampleID not in samples:
if sampleID in sample_dict: del sample_dict[sampleID]
continue
if features is not None and snpID not in features:
continue
sampleAl = line[i]
if sampleAl == "1":
sampleAl = "A A"
elif sampleAl == "0":
sampleAl = "G G"
elif sampleAl == miss:
sampleAl = "0 0"
if sample_dict[sampleID] == "":
sample_dict[sampleID] = sampleAl
else:
sample_dict[sampleID] += ("\t" + sampleAl)
with open(ped_ofile, "w") as ped_o:
for sampleID, sampleAl in sample_dict.items():
ped_o.write(
"\t".join([family, sampleID, "0", "0", "0", "0", sampleAl]) +
"\n")
# NOTE All pheno. CV objects
objs = glob.glob("%s/obj/*.pkl" % args.idir)
#--------------------------------------------------#
# NOTE Collect information of each object
sep_str = "#%s#" % ('-' * 50)
with open(path.join(odir, "%s_stats.txt" % args.obname), 'w') as ofile:
for obj in objs:
info = pheno_general_stats(obj, args.model)
ofile.write(info)
#--------------------------------------------------#
# NOTE Feature annotation
annot = None
# All genes
obj_ = load_cv_obj(
objs[0]) # load only first object (all should have same feature list)
features = set(read_id_list(obj_.features))
sys.stdout.write("There are %d features\n" % len(features))
# Annotation from table
if args.f_type == 'gff':
annot = read_annot_tab(annot_tab=args.f_source)
elif args.f_type == 'vcf':
annot = read_annot_tab(annot_tab=args.f_source, id_prefix='var_')
assert len(annot) == len(features)
sys.stdout.write('Annotations were collected\n')
#--------------------------------------------------#
# NOTE Add annotation to results
assert annot is not None
pool = Pool(args.cores)
pool_iter = itertools.product(objs, [annot], [odir], [args.obname],
[args.model], [args.f_type])
annots = pool.starmap(add_gwas_annot, pool_iter)
