def main(args=None):
vinfo = sys.version_info
if not (vinfo >= (2, 7)):
raise SystemError('Python interpreter version >= 2.7 required, '
'found %d.%d instead.' % (vinfo.major, vinfo.minor))
if args is None:
parser = get_argument_parser()
args = parser.parse_args()
gopca_file = args.gopca_file
output_file = args.output_file
#sig_max_len = args.sig_max_len
#sig_reverse_order = args.sig_reverse_order
#sample_cluster_metric = args.sample_cluster_metric
#no_sample_clustering = args.no_sample_clustering
# configure root logger
log_file = args.log_file
quiet = args.quiet
verbose = args.verbose
logger = misc.get_logger(log_file=log_file, quiet=quiet,
verbose=verbose)
result = util.read_gopca_result(gopca_file)
sig_matrix = util.read_gopca_result(gopca_file)
sig_labels = [sig.get_label(include_id=False)
for sig in sig_matrix.signatures]
matrix = ExpMatrix(genes=sig_labels, samples=sig_matrix.samples,
X=sig_matrix.X)
matrix.index.name = 'Signatures'
#signatures = result.signatures
#sig_labels = [sig.get_label(max_name_length=sig_max_len, include_id=False)
# for sig in signatures]
#samples = list(result.samples)
# generate expression matrix
#E = ExpMatrix(genes=sig_labels, samples=samples, X=sig_matrix.X)
# clustering of signatures (rows)
#E, _ = cluster.cluster_genes(E, reverse=sig_reverse_order)
exp_logger = logging.getLogger(expression.__name__)
exp_logger.setLevel(logging.WARNING)
matrix.write_tsv(output_file)
exp_logger.setLevel(logging.NOTSET)
logger.info('Wrote %d x %d signature matrix to "%s".',
matrix.p, matrix.n, output_file)
return 0
def from_signatures(cls,
signatures,
standardize=False,
center=True,
use_median=True,
cluster_signatures=True,
signature_cluster_metric='correlation',
cluster_samples=True,
sample_cluster_metric='euclidean',
cluster_method='average'):
"""Generate a GO-PCA signature matrix from individual signatures.
The GO-PCA signature matrix contains the expression levels of all
signatures (rows) generated, across all samples (columns) in the
analysis. See the documentation of the `GOPCASignature` class for
details on how signature expression levels are calculated.
Parameters
----------
signatures: Iterable of `GOPCASignature`
The signatures generated.
"""
# TODO: finish docstring
assert isinstance(signatures, Iterable)
assert isinstance(standardize, bool)
assert isinstance(center, bool)
assert isinstance(use_median, bool)
assert isinstance(cluster_signatures, bool)
assert isinstance(cluster_samples, bool)
### generate the expression matrix
matrix = ExpMatrix(
pd.concat([
sig.get_expression(standardize=standardize,
center=center,
use_median=use_median) for sig in signatures
],
axis=1).T)
matrix.genes.name = 'Signatures'
matrix.samples.name = 'Samples'
if matrix.p == 1:
cluster_signatures = False
cluster_samples = False
### clustering
if cluster_signatures:
# cluster signatures
matrix = cluster.cluster_genes(matrix,
metric=signature_cluster_metric,
method=cluster_method)
order_samples = None
if cluster_samples:
# cluster samples
matrix = cluster.cluster_samples(matrix,
metric=sample_cluster_metric,
method=cluster_method)
return cls(matrix)
def plot_read_count_distribution(barcode_count_file,
output_file,
xaxis_label=('# mapped reads '
'(log<sub>10</sub>-scale)')):
"""Plot histogram of the distribution of reads per barcode.
TODO: docstring"""
matrix = ExpMatrix.read_tsv(barcode_count_file)
x = np.float64(matrix.values.ravel())
num_total_reads = int(np.sum(x))
x[x < 1] = 1
x = np.log10(x)
data = [go.Histogram(x=x, nbinsx=100)]
layout = go.Layout(
title='Total number of mapped reads: %d' % num_total_reads,
font=dict(
size=20,
family='serif',
),
xaxis=dict(title=xaxis_label, ),
yaxis=dict(
title='# barcodes',
type='log',
),
)
fig = go.Figure(data=data, layout=layout)
plot(fig, filename=output_file, show_link=False, auto_open=False)
def test_sparse(tmpdir, my_matrix):
"""Test reading/writing of sparse text format."""
output_file = tmpdir.join('expression_matrix.mtx').strpath
my_matrix.write_sparse(output_file)
other = ExpMatrix.read_sparse(output_file)
assert other is not my_matrix
assert other == my_matrix
def test_download(my_expression_file, my_gene_ontology_file,
my_fly_gene_set_file):
"""Test if required data files were downloaded successfully."""
# expression file
print(my_expression_file)
assert os.path.isfile(my_expression_file)
matrix = ExpMatrix.read_tsv(my_expression_file)
assert isinstance(matrix, ExpMatrix)
assert matrix.hash == 'aa7cc5e6e04d34e65058f059bcdfe5ea'
# gene ontology file
print(my_gene_ontology_file)
assert os.path.isfile(my_gene_ontology_file)
# hash not stable?
#ontology = GeneOntology.read_obo(my_gene_ontology_file)
#assert isinstance(ontology, GeneOntology)
#assert ontology.hash == '978546899cfb0196ac2005d4b177725f'
# gene set file
print(my_fly_gene_set_file)
assert os.path.isfile(my_fly_gene_set_file)
gene_sets = GeneSetCollection.read_tsv(my_fly_gene_set_file)
assert isinstance(gene_sets, GeneSetCollection)
assert gene_sets.hash == '78b4b27e9658560a8e5993154d3228fa'
def test_download(my_expression_file, my_gene_ontology_file,
my_fly_gene_set_file):
"""Test if required data files were downloaded successfully."""
# expression file
print(my_expression_file)
assert os.path.isfile(my_expression_file)
matrix = ExpMatrix.read_tsv(my_expression_file)
assert isinstance(matrix, ExpMatrix)
assert matrix.hash == 'aa7cc5e6e04d34e65058f059bcdfe5ea'
# gene ontology file
print(my_gene_ontology_file)
assert os.path.isfile(my_gene_ontology_file)
# hash not stable?
#ontology = GeneOntology.read_obo(my_gene_ontology_file)
#assert isinstance(ontology, GeneOntology)
#assert ontology.hash == '978546899cfb0196ac2005d4b177725f'
# gene set file
print(my_fly_gene_set_file)
assert os.path.isfile(my_fly_gene_set_file)
gene_sets = GeneSetCollection.read_tsv(my_fly_gene_set_file)
assert isinstance(gene_sets, GeneSetCollection)
assert gene_sets.hash == '78b4b27e9658560a8e5993154d3228fa'
def test_tsv(tmpdir, my_matrix):
output_file = tmpdir.join('expression_matrix.tsv').strpath
my_matrix.write_tsv(output_file)
# data = open(str(path), mode='rb').read()
# h = hashlib.md5(data).hexdigest()
# assert h == 'd34bf3d376eb613e4fea894f7c9d601f'
other = ExpMatrix.read_tsv(output_file)
assert other is not my_matrix
assert other == my_matrix
def test_tsv(tmpdir, my_matrix):
output_file = tmpdir.join('expression_matrix.tsv').strpath
my_matrix.write_tsv(output_file)
# data = open(str(path), mode='rb').read()
# h = hashlib.md5(data).hexdigest()
# assert h == 'd34bf3d376eb613e4fea894f7c9d601f'
other = ExpMatrix.read_tsv(output_file)
assert other is not my_matrix
assert other == my_matrix
def my_matrix_filtered(my_expression_file):
matrix = ExpMatrix.read_tsv(my_expression_file)
matrix_filtered = filter_variance(matrix, 8000)
return matrix_filtered
def my_matrix_filtered(my_expression_file):
matrix = ExpMatrix.read_tsv(my_expression_file)
matrix_filtered = filter_variance(matrix, 8000)
return matrix_filtered
def main(args=None):
"""Run GO-PCA and store the result in a `pickle` file.
Parameters
----------
args: argparse.Namespace object, optional
The argument values. If not specified, the values will be obtained by
parsing the command line arguments using the `argparse` module.
Returns
-------
int
Exit code (0 if no error occurred).
Raises
------
SystemError
If the version of the Python interpreter is not >= 2.7.
"""
vinfo = sys.version_info
if not (vinfo >= (2, 7)):
raise SystemError('Python interpreter version >= 2.7 required, '
'found %d.%d instead.' % (vinfo.major, vinfo.minor))
if args is None:
# read arguments from the command line
parser = get_argument_parser()
# parse first with default options, in case "--help" is specified
# ("--help" causes the program to exit at this point)
args = parser.parse_args()
# now remove the defaults and parse again
# (removing the defaults is important so that we know which values
# were specified by the user)
no_defaults = dict([p, None] for p in GOPCA.get_param_defaults())
no_defaults2 = dict([p, None]
for p in GOPCAParams.get_param_defaults())
no_defaults.update(no_defaults2)
parser.set_defaults(**no_defaults)
args = parser.parse_args()
# reporting options
log_file = args.log_file
quiet = args.quiet
verbose = args.verbose
# test if we can write to log_file?
# configure root logger
logger = util.get_logger(log_file=log_file, quiet=quiet)
# check if required parameters were specified
passed = True
if args.expression_file is None:
logger.error('No expression file specified!')
passed = False
if args.gene_set_file is None:
logger.error('No gene set file specified!')
passed = False
if args.output_file is None:
logger.error('No output file specified!')
passed = False
if not passed:
logger.error('Not all required parameters were specified.')
return 1
# generate configuration
if args.config_file is not None:
# read parameter values from config file
params = GOPCAParams.read_ini(args.config_file)
else:
# start with default configuration
params = GOPCAParams()
# overwrite parameters specified on the command line
for p in GOPCAParams.get_param_defaults():
v = getattr(args, p)
if v is not None:
logger.debug('Parameter "%s" specified on command line!', p)
params.set_param(p, v)
global_params = GOPCA.get_param_defaults()
for k in list(global_params.keys()):
v = getattr(args, k)
if v is not None:
logger.debug('Parameter "%s" specified on command line!', p)
global_params[k] = v
# read expression file
matrix = ExpMatrix.read_tsv(args.expression_file)
logger.info(
'Expression matrix size: ' + '(p = %d genes) x (n = %d samples).',
matrix.p, matrix.n)
if args.sel_var_genes > 0:
# filter genes by variance
matrix = matrix.filter_variance(args.sel_var_genes)
# read gene set file
gene_sets = GeneSetCollection.read_tsv(args.gene_set_file)
print(args.gene_set_file, gene_sets)
# read ontology file (if supplied)
gene_ontology = None
if args.gene_ontology_file is not None:
p_logger = logging.getLogger(genometools.__name__)
p_logger.setLevel(logging.ERROR)
gene_ontology = GeneOntology.read_obo(
args.gene_ontology_file, part_of_cc_only=params.go_part_of_cc_only)
p_logger.setLevel(logging.NOTSET)
M = GOPCA.simple_setup(matrix,
params,
gene_sets,
gene_ontology,
verbose=verbose,
**global_params)
run = M.run()
if run is None:
logger.error('GO-PCA run failed!')
return 1
# write run to pickle file
logger.info('Storing GO-PCA run in file "%s"...', args.output_file)
run.write_pickle(args.output_file)
return 0
def rma(cdf_file,
sample_cel_files,
pm_probes_only=True,
bg_correct=True,
quantile_normalize=True,
medianpolish=True):
"""Perform RMA on a set of samples.
Parameters
----------
cdf_file: str
The path of the Brainarray CDF file to use.
Note: Brainarray CDF files can be downloaded from
http://brainarray.mbni.med.umich.edu/Brainarray/Database/CustomCDF/genomic_curated_CDF.asp
sample_cel_files: collections.OrderedDict (st => str)
An ordered dictionary where each key/value-pair corresponds to a
sample. The *key* is the sample name, and the *value* is the (absolute)
path of the corresponding CEL file. The CEL files can be gzip'ed.
pm_probes_only: bool, optional
Whether or not to only use PM (perfect match) probes and ignore all MM
(mismatch) probes. [True]
bg_correct: bool, optional
Whether or not to apply background correction. [True]
quantile_normalize: bool, optional
Whether or not to apply quantile normalization. [True]
medianpolish: bool, optional
Whether or not to apply medianpolish. [True]
Returns
-------
genes: tuple of str
The list of gene names.
samples: tuple of str
The list of sample names.
X: np.ndarray (ndim = 2, dtype = np.float32)
The expression matrix (genes-by-samples).
Examples
--------
>>> from collections import OrderedDict
>>> import pyaffy
>>> cdf_file = '/path/to/brainarray/cdf/HGU133Plus2_Hs_ENTREZG.cdf'
>>> sample_cel_files = OrderedDict([
['Sample 1', '/path/to/sample_1.CEL.gz'],
['Sample 2', '/path/to/sample_2.CEL.gz'],
])
>>> genes, samples, X = pyaffy.rma(cdf_file, sample_cel_files)
"""
### checks
assert isinstance(cdf_file, (str, _oldstr))
assert os.path.isfile(cdf_file), \
'CDF file "%s" does not exist!' %(cdf_file)
assert isinstance(sample_cel_files, collections.OrderedDict)
for sample, cel_file in sample_cel_files.items():
assert isinstance(sample, (str, _oldstr))
assert isinstance(cel_file, (str, _oldstr))
assert os.path.isfile(cel_file), \
'CEL file "%s" does not exist!' %(cel_file)
assert isinstance(pm_probes_only, bool)
assert isinstance(bg_correct, bool)
assert isinstance(quantile_normalize, bool)
assert isinstance(medianpolish, bool)
t00 = time.time()
### read CDF data
logger.info('Parsing CDF file.')
t0 = time.time()
# parse the CDF file
probe_type = 'pm'
if not pm_probes_only:
probe_type = 'all'
name, num_rows, num_cols, pm_probesets = \
parse_cdf(cdf_file, probe_type=probe_type)
# concatenate indices of all PM probes into one long vector
pm_sel = np.concatenate(list(pm_probesets.values()))
t1 = time.time()
logger.info('CDF file parsing time: %.2f s', t1 - t0)
logger.info('CDF array design name: %s', name)
logger.info('CDF rows / columns: %d x %d', num_rows, num_cols)
### read CEL data
logger.info('Parsing CEL files...')
t0 = time.time()
p = pm_sel.size
n = len(sample_cel_files)
Y = np.empty((p, n), dtype=np.float32)
samples = []
sub_logger = logging.getLogger(celparser.__name__)
sub_logger.setLevel(logging.WARNING)
for j, (sample, cel_file) in enumerate(sample_cel_files.items()):
logger.debug('Parsing CEL file for sample "%s": %s', sample, cel_file)
samples.append(sample)
y = parse_cel(cel_file)
Y[:, j] = y[pm_sel]
sub_logger.setLevel(logging.NOTSET)
t1 = time.time()
logger.info('CEL files parsing time: %.1f s.', t1 - t0)
### background correction
if bg_correct:
logger.info('Performing background correction...')
t0 = time.time()
Y = rma_bg_correct(Y)
t1 = time.time()
logger.info('Background correction time: %.1f s.', t1 - t0)
else:
logger.info('Skipping background correction.')
matrix = ExpMatrix(genes=pm_sel, samples=samples, X=Y)
### quantile normalization
if quantile_normalize:
logger.info('Performing quantile normalization...')
t0 = time.time()
matrix = qnorm(matrix)
t1 = time.time()
logger.info('Quantile normalization time: %.1f s.', t1 - t0)
else:
logger.info('Skipping quantile normalization.')
### convert intensities to log2-scale
Y = np.log2(matrix.values)
### probeset summarization (with or without median polish)
method = 'with'
if not medianpolish:
method = 'without'
logger.info('Summarize probeset intensities (%s medianpolish)...', method)
t0 = time.time()
p = len(pm_probesets)
n = Y.shape[1]
X = np.empty((p, n), dtype=np.float32)
cur = 0
num_converged = 0
genes = []
for i, (gene_id, probes) in enumerate(pm_probesets.items()):
genes.append(gene_id)
if medianpolish:
#X_sub = np.ascontiguousarray(Y[cur:(cur + probes.size),:])
X_sub = Y[cur:(cur + probes.size), :]
_, row_eff, col_eff, global_eff, converged, num_iter = medpolish(
X_sub, copy=False)
X[i, :] = col_eff + global_eff
if converged:
num_converged += 1
else:
# simply use median across probes
X[i, :] = np.median(Y[cur:(cur + probes.size), :], axis=0)
#X[i,:] = np.ma.median(X_sub, axis = 0)
cur += probes.size
t1 = time.time()
logger.info('Probeset summarization time: %.2f s.', t1 - t0)
if medianpolish:
logger.debug('Converged: %d / %d (%.1f%%)', num_converged, p,
100 * (num_converged / float(p)))
### report total time
t11 = time.time()
logger.info('Total RMA time: %.1f s.', t11 - t00)
### sort alphabetically by gene name
a = np.lexsort([genes])
genes = [genes[i] for i in a]
X = X[a, :]
return genes, samples, X
def get_heatmap(self,
sig_matrix=None,
standardize=False,
center=True,
use_median=True,
include_id=False,
include_stats=True,
include_pval=True,
cluster_genes=True,
gene_cluster_metric='correlation',
cluster_samples=True,
sample_cluster_metric='euclidean',
cluster_method='average',
colorbar_label=None,
**kwargs):
"""Generate a heatmap of the signature gene matrix."""
# TODO: Finish docstring
assert isinstance(cluster_genes, bool)
assert isinstance(cluster_samples, bool)
assert isinstance(gene_cluster_metric, (str, _oldstr))
assert isinstance(sample_cluster_metric, (str, _oldstr))
assert isinstance(cluster_method, (str, _oldstr))
from . import GOPCASignatureMatrix
if sig_matrix is not None:
assert isinstance(sig_matrix, GOPCASignatureMatrix)
if colorbar_label is None:
colorbar_label = 'Centered expression'
matrix = self.matrix.copy()
if standardize:
matrix.standardize_genes(inplace=True)
cb_default_label = ('Standardized expression<br>'
'(based on log<sub>2</sub>-scale)')
elif center:
matrix.center_genes(use_median=use_median, inplace=True)
cb_default_label = 'Centered expression<br>(log<sub>2</sub>-scale)'
else:
cb_default_label = 'Expression<br>(log<sub>2</sub>-scale)'
if colorbar_label is None:
colorbar_label = cb_default_label
# clustering
if sig_matrix is not None:
# user has provided a GOPCASignatureMatrix instance
# make sure its samples match the signature's
logger.info('Ordering samples to match order in signature matrix.')
assert set(sig_matrix.samples) == set(self.samples.values)
# re-arrange samples according to clustering of signature matrix
matrix = matrix.loc[:, sig_matrix.samples]
elif cluster_samples:
# cluster samples (only if no signature matrix is provided)
matrix = cluster.cluster_samples(matrix,
metric=sample_cluster_metric,
method=cluster_method)
if cluster_genes:
# cluster genes
matrix = cluster.cluster_genes(matrix,
metric=gene_cluster_metric,
method=cluster_method)
# add a "Signature"-labeled row to the top,
# which represents the signature expression vector
title = self.get_label(include_id=include_id,
include_stats=include_stats,
include_pval=include_pval)
mean = np.mean(matrix.X, axis=0)
header_row = ExpMatrix(genes=['<b>Signature</b>'],
samples=matrix.samples,
X=np.atleast_2d(mean))
combined_matrix = pd.concat([header_row, matrix], axis=0)
heatmap = ExpHeatmap(combined_matrix,
title=title,
colorbar_label=colorbar_label,
**kwargs)
return heatmap
def __init__(self, *args, **kwargs):
return ExpMatrix.__init__(self, *args, **kwargs)
def run_pipeline_old(config_file):
"""inDrop pipeline."""
t0 = time.time()
conf, errors = config.read_config(config_file)
input_ = conf['input']
output = conf['output']
params = conf['parameters']
pipeline = conf['pipeline']
output_dir = output['output_dir']
barcode1_file = resource_filename(
'singlecell', 'data/indrop/gel_barcode1_list.txt')
barcode2_file = resource_filename(
'singlecell', 'data/indrop/gel_barcode2_list.txt')
if not util.is_empty_dir(output_dir):
if output['allow_nonempty_output_dir']:
_LOGGER.info('Note: Output directory exists and is not empty.')
else:
_LOGGER.error(
'Output directory is not empty! Either specify an empty '
'(or non-existent) output directory, or specify '
'"allow_nonempty_output_dir: yes" in the configuration file.')
return 1
# create a timestamp for this run
timestamp = time.strftime('%Y-%m-%d_%H-%M-%S')
# create output directory, if necessary
misc.make_sure_dir_exists(output_dir)
# create results directory
results_dir = os.path.join(output_dir, 'results')
misc.make_sure_dir_exists(results_dir)
# add file handler to the _LOGGER
pipeline_log_file = os.path.join(results_dir, 'pipeline_log.txt')
file_handler = logging.FileHandler(pipeline_log_file)
log_fmt = '[%(asctime)s] %(levelname)s: %(message)s'
log_datefmt = '%Y-%m-%d %H:%M:%S'
formatter = logging.Formatter(log_fmt,log_datefmt)
file_handler.setFormatter(formatter)
_LOGGER.addHandler(file_handler)
_LOGGER.info('This is the inDrop pipeline of SingleCell v%s', __version__)
_LOGGER.info('Pipeline run timestamp: %s', timestamp)
if params['use_docker']:
_LOGGER.info('We\'re running using docker!')
else:
_LOGGER.info('We\'re running without using docker!')
# create plot directory
plot_dir = os.path.join(results_dir, 'qc_plots')
misc.make_sure_dir_exists(plot_dir)
# copy configuration file to results directory
output_config_file = os.path.join(results_dir,
'pipeline_config_%s.yaml' % timestamp)
_LOGGER.info('Copying configuration file to "%s"', output_config_file)
shutil.copyfile(config_file, output_config_file)
### process reads
processed_read_dir = os.path.join(output_dir, 'processed_reads')
misc.make_sure_dir_exists(processed_read_dir)
process_read_file = os.path.join(
processed_read_dir, 'processed_reads.fastq')
process_count_file = os.path.join(results_dir, 'barcode_counts_reads.tsv')
if pipeline['skip_read_processing']:
_LOGGER.info('Skipping read processing step!')
else:
_LOGGER.info('Processing reads...')
reads.process_reads(
input_['barcode_read_file'], input_['mrna_read_file'],
barcode1_file, barcode2_file,
process_read_file, process_count_file,
max_reads=params['max_reads'])
_LOGGER.info('Finished processing reads.')
### mapping reads with STAR
barcode_counts_mapped_file = os.path.join(results_dir,
'barcode_counts_mapped.tsv')
map_script_file = os.path.join(results_dir, 'map_with_star.sh')
map_log_file = os.path.join(results_dir, 'mapping_log.txt')
mapping_dir = os.path.join(output_dir, 'aligned_reads')
alignment_file = os.path.join(mapping_dir, 'Aligned.sortedByCoord.out.bam')
if pipeline['skip_mapping']:
_LOGGER.info('Skipping read mapping step!')
else:
# mapping
_LOGGER.info('Mapping reads with STAR...')
star_params = conf['STAR']
mapping.map_with_star(process_read_file, input_['star_index_dir'],
map_script_file, map_log_file,
mapping_dir,
num_threads=params['num_threads'],
compressed=False,
use_docker=params['use_docker'],
**star_params)
_LOGGER.info('Finished mapping reads.')
# count mapped reads for each barcode
_LOGGER.info('Counting mapped reads for each barcode...')
barcodes.count_mapped_reads(
alignment_file,
barcode1_file, barcode2_file,
barcode_counts_mapped_file)
_LOGGER.info('Finished counting mapped reads for each barcode.')
### generate intermediate files (chromosome lengths; protein-coding genes)
chromlen_file = os.path.join(results_dir, 'chromosome_lengths.tsv')
gene_file = os.path.join(results_dir, 'genes.tsv')
if (not pipeline['skip_aligned_read_processing']) or \
(not pipeline['skip_expression_quantification']):
logger = logging.getLogger('genometools.ensembl')
logger.setLevel(logging.ERROR)
# generate file containing chromosome lengths
_LOGGER.info('Extracting chromosome lengths...')
chromlen = ensembl.get_chromosome_lengths(input_['genome_file'])
chromlen.to_csv(chromlen_file, sep='\t', header=True)
_LOGGER.info('Finished extracting chromosome lengths.')
# generate file containing protein-coding genes
_LOGGER.info('Extracting list of protein-coding genes from Ensembl GTF'
' file...')
protein_coding_genes = ensembl.get_protein_coding_genes(
input_['genome_annotation_file'])
_LOGGER.info('Finished extracting list of protein-coding genes.')
if params['include_lincRNA_genes']:
# extract lincRNA genes
_LOGGER.info('Extracting list of lincRNA genes from Ensembl GTF'
' file...')
linc_rna_genes = ensembl.get_linc_rna_genes(
input_['genome_annotation_file'])
_LOGGER.info('Finished extracting list of lincRNA genes.')
# exclude lincRNA whose gene name clashes with that of a
# protein-coding gene
sel = ~linc_rna_genes['name'].isin(
set(protein_coding_genes['name']))
linc_rna_genes = linc_rna_genes.loc[sel]
genes = pd.concat([protein_coding_genes, linc_rna_genes])
else:
genes = protein_coding_genes
genes.to_csv(gene_file, sep='\t', index=False)
### process aligned reads
read_info_dir = os.path.join(output_dir, 'read_info')
if not pipeline['skip_aligned_read_processing']:
_LOGGER.info('Processing aligned reads...')
misc.make_sure_dir_exists(read_info_dir)
aligned_reads.process_aligned_reads(
alignment_file, chromlen_file,
gene_file, input_['genome_annotation_file'], read_info_dir,
num_jobs=params['num_threads'])
_LOGGER.info('Finished processing of aligned reads.')
else:
_LOGGER.info('Skipping processing of aligned reads!')
### quantify gene and transcript expression
num_cells = params['num_cells']
gene_expression_file = os.path.join(
results_dir, 'gene_expression.mtx')
transcript_expression_file = os.path.join(
results_dir, 'transcript_expression.mtx')
dense_gene_expression_file = None
if output['generate_dense_expression_matrix']:
dense_gene_expression_file = os.path.join(
results_dir, 'gene_expression.tsv')
if not pipeline['skip_expression_quantification']:
_LOGGER.info('Quantifying expression for top %d cells...', num_cells)
expression.quantify_expression(
barcode_counts_mapped_file,
chromlen_file,
read_info_dir,
gene_file, input_['genome_annotation_file'],
num_cells,
gene_expression_file, transcript_expression_file,
min_umi_qual=params['min_umi_qual'],
cell_prefix=output['cell_prefix'],
dense_gene_expression_output_file=dense_gene_expression_file)
_LOGGER.info('Finished expression quantification.')
else:
_LOGGER.info('Skipping expression quantification!')
### QC scripts
if pipeline['skip_qc_plot_generation']:
_LOGGER.info('Skipping the generation of QC plots!')
else:
_LOGGER.info('Generating QC plots...')
_LOGGER.info('Plotting distribution of mapped reads per barcode...')
mapped_count_histogram_file = \
os.path.join(plot_dir, 'mapped_reads_histogram.html')
barcodes.plot_read_count_distribution(
barcode_counts_mapped_file, mapped_count_histogram_file)
_LOGGER.info('Plotting distribution of transcripts per cell...')
output_file = os.path.join(plot_dir, 'transcripts_per_cell.html')
matrix = ExpMatrix.read_sparse(gene_expression_file)\
.astype(np.float64)
fig = qc.plot_cell_transcript_distribution(
matrix, output['experiment_name'])
plot(fig, filename=output_file, show_link=False, auto_open=False)
_LOGGER.info('Plotting fraction of ribosomal and mitochondrial '
'gene expression...')
output_file = os.path.join(plot_dir,
'mito_ribo_expression.html')
matrix = ExpMatrix.read_sparse(gene_expression_file)\
.astype(np.float64) # redundant
fig = qc.plot_transcriptome_components(
matrix, species=params['species'], name=output['experiment_name'],
width=950, height=800, font_size=16, font_family='serif')
plot(fig, filename=output_file, show_link=False, auto_open=False)
_LOGGER.info('Plotting saturation...')
output_file = os.path.join(plot_dir,
'saturation.html')
matrix = ExpMatrix.read_sparse(transcript_expression_file)\
.astype(np.float64)
fig = qc.plot_saturation(matrix)
plot(fig, filename=output_file, show_link=False, auto_open=False)
#_LOGGER.removeHandler(file_handler)
t1 = time.time()
t = t1 - t0
_LOGGER.info('Pipeline run finished in %.1f s (%.1f min)!', t, t/60)
def main(args=None):
vinfo = sys.version_info
if not (vinfo >= (2, 7)):
raise SystemError('Python interpreter version >= 2.7 required, '
'found %d.%d instead.' % (vinfo.major, vinfo.minor))
if args is None:
parser = get_argument_parser()
args = parser.parse_args()
expression_file = args.expression_file
entrez2gene_file = args.entrez2gene_file
gene_file = args.gene_file
output_file = args.output_file
strip_affy_suffix = args.strip_affy_suffix
log_file = args.log_file
quiet = args.quiet
verbose = args.verbose
# configure root logger
logger = misc.get_logger(log_file=log_file, quiet=quiet, verbose=verbose)
# read data
genome = ExpGeneTable.read_tsv(gene_file)
matrix = ExpMatrix.read_tsv(expression_file)
e2g = dict(misc.read_all(entrez2gene_file))
entrez = matrix.genes
if strip_affy_suffix:
# remove "_at" suffix from Entrez IDs
entrez = [e[:-3] for e in entrez]
logger.debug(str(entrez[:3]))
# check that Entrez IDs are unique
assert len(entrez) == len(set(entrez))
# convert Entrez IDs to gene names
f = 0
genes = []
X = []
# g = None
for i, e in enumerate(entrez):
# print e
try:
g = e2g[e]
except KeyError:
f += 1
else:
# check if there are multiple entrez IDs pointing to the same gene
# assert g not in genes
genes.append(g)
X.append(matrix.X[i, :])
assert len(genes) == len(set(genes))
if f > 0:
logger.warning(
'Failed to convert %d / %d entrez IDs '
'to gene symbols (%.1f%%).', f, matrix.p,
100 * (f / float(matrix.p)))
# filter for known protein-coding genes
X = np.float64(X)
p = X.shape[0]
logger.debug(str(X.shape))
sel = np.zeros(p, dtype=np.bool_)
for i in range(p):
if genes[i] in genome:
sel[i] = True
sel = np.nonzero(sel)[0]
genes = [genes[i] for i in sel]
X = X[sel, :]
f = p - sel.size
if f > 0:
logger.warning(
'Failed to find %d / %d gene symbols in list of '
'protein-coding genes (%.1f%%)', f, p, 100 * (f / float(p)))
# generate new matrix (this automatically sorts the genes alphabetically)
logger.debug('Genes: %d, Samples: %d, matrix: %s', len(genes),
len(matrix.samples), str(X.shape))
matrix_conv = ExpMatrix(genes=genes, samples=matrix.samples, X=X)
# write output file
matrix_conv.write_tsv(output_file)
return 0
def __init__(self, *args, **kwargs):
return ExpMatrix.__init__(self, *args, **kwargs)
def my_matrix():
genes = ['a', 'b', 'c', 'd', 'e', 'f']
samples = ['s1', 's2', 's3']
X = np.arange(18, dtype=np.float64).reshape(6, 3)
matrix = ExpMatrix(genes=genes, samples=samples, X=X)
return matrix
def main(args=None):
vinfo = sys.version_info
if not (vinfo >= (2, 7)):
raise SystemError(
"Python interpreter version >= 2.7 required, " "found %d.%d instead." % (vinfo.major, vinfo.minor)
)
if args is None:
parser = get_argument_parser()
args = parser.parse_args()
expression_file = args.expression_file
entrez2gene_file = args.entrez2gene_file
gene_file = args.gene_file
output_file = args.output_file
strip_affy_suffix = args.strip_affy_suffix
log_file = args.log_file
quiet = args.quiet
verbose = args.verbose
# configure root logger
logger = misc.get_logger(log_file=log_file, quiet=quiet, verbose=verbose)
# read data
genome = ExpGenome.read_tsv(gene_file)
matrix = ExpMatrix.read_tsv(expression_file)
e2g = dict(misc.read_all(entrez2gene_file))
entrez = matrix.genes
if strip_affy_suffix:
# remove "_at" suffix from Entrez IDs
entrez = [e[:-3] for e in entrez]
logger.debug(str(entrez[:3]))
# check that Entrez IDs are unique
assert len(entrez) == len(set(entrez))
# convert Entrez IDs to gene names
f = 0
genes = []
X = []
# g = None
for i, e in enumerate(entrez):
# print e
try:
g = e2g[e]
except KeyError:
f += 1
else:
# check if there are multiple entrez IDs pointing to the same gene
# assert g not in genes
genes.append(g)
X.append(matrix.X[i, :])
assert len(genes) == len(set(genes))
if f > 0:
logger.warning(
"Failed to convert %d / %d entrez IDs " "to gene symbols (%.1f%%).",
f,
matrix.p,
100 * (f / float(matrix.p)),
)
# filter for known protein-coding genes
X = np.float64(X)
p = X.shape[0]
logger.debug(str(X.shape))
sel = np.zeros(p, dtype=np.bool_)
for i in range(p):
if genes[i] in genome:
sel[i] = True
sel = np.nonzero(sel)[0]
genes = [genes[i] for i in sel]
X = X[sel, :]
f = p - sel.size
if f > 0:
logger.warning(
"Failed to find %d / %d gene symbols in list of " "protein-coding genes (%.1f%%)",
f,
p,
100 * (f / float(p)),
)
# generate new matrix (this automatically sorts the genes alphabetically)
logger.debug("Genes: %d, Samples: %d, matrix: %s", len(genes), len(matrix.samples), str(X.shape))
matrix_conv = ExpMatrix(genes=genes, samples=matrix.samples, X=X)
# write output file
matrix_conv.write_tsv(output_file)
return 0
def main(args=None):
"""Run GO-PCA and store the result in a `pickle` file.
Parameters
----------
args: argparse.Namespace object, optional
The argument values. If not specified, the values will be obtained by
parsing the command line arguments using the `argparse` module.
Returns
-------
int
Exit code (0 if no error occurred).
Raises
------
SystemError
If the version of the Python interpreter is not >= 2.7.
"""
vinfo = sys.version_info
if not (vinfo >= (2, 7)):
raise SystemError('Python interpreter version >= 2.7 required, '
'found %d.%d instead.' % (vinfo.major, vinfo.minor))
if args is None:
# read arguments from the command line
parser = get_argument_parser()
# parse first with default options, in case "--help" is specified
# ("--help" causes the program to exit at this point)
args = parser.parse_args()
# now remove the defaults and parse again
# (removing the defaults is important so that we know which values
# were specified by the user)
no_defaults = dict([p, None] for p in GOPCA.get_param_defaults())
no_defaults2 = dict([p, None] for p in GOPCAParams.get_param_defaults())
no_defaults.update(no_defaults2)
parser.set_defaults(**no_defaults)
args = parser.parse_args()
# reporting options
log_file = args.log_file
quiet = args.quiet
verbose = args.verbose
# test if we can write to log_file?
# configure root logger
logger = util.get_logger(log_file=log_file, quiet=quiet)
# check if required parameters were specified
passed = True
if args.expression_file is None:
logger.error('No expression file specified!')
passed = False
if args.gene_set_file is None:
logger.error('No gene set file specified!')
passed = False
if args.output_file is None:
logger.error('No output file specified!')
passed = False
if not passed:
logger.error('Not all required parameters were specified.')
return 1
# generate configuration
if args.config_file is not None:
# read parameter values from config file
params = GOPCAParams.read_ini(args.config_file)
else:
# start with default configuration
params = GOPCAParams()
# overwrite parameters specified on the command line
for p in GOPCAParams.get_param_defaults():
v = getattr(args, p)
if v is not None:
logger.debug('Parameter "%s" specified on command line!', p)
params.set_param(p, v)
global_params = GOPCA.get_param_defaults()
for k in list(global_params.keys()):
v = getattr(args, k)
if v is not None:
logger.debug('Parameter "%s" specified on command line!', p)
global_params[k] = v
# read expression file
matrix = ExpMatrix.read_tsv(args.expression_file)
logger.info('Expression matrix size: ' +
'(p = %d genes) x (n = %d samples).', matrix.p, matrix.n)
if args.sel_var_genes > 0:
# filter genes by variance
matrix = matrix.filter_variance(args.sel_var_genes)
# read gene set file
gene_sets = GeneSetCollection.read_tsv(args.gene_set_file)
print(args.gene_set_file, gene_sets)
# read ontology file (if supplied)
gene_ontology = None
if args.gene_ontology_file is not None:
p_logger = logging.getLogger(genometools.__name__)
p_logger.setLevel(logging.ERROR)
gene_ontology = GeneOntology.read_obo(
args.gene_ontology_file,
part_of_cc_only=params.go_part_of_cc_only)
p_logger.setLevel(logging.NOTSET)
M = GOPCA.simple_setup(matrix, params, gene_sets, gene_ontology,
verbose=verbose, **global_params)
run = M.run()
if run is None:
logger.error('GO-PCA run failed!')
return 1
# write run to pickle file
logger.info('Storing GO-PCA run in file "%s"...', args.output_file)
run.write_pickle(args.output_file)
return 0
def my_matrix(my_gene_names, my_samples, my_X):
#genes = ['a', 'b', 'c', 'd']
#samples = ['s1', 's2', 's3']
# X = np.arange(12, dtype=np.float64).reshape(4, 3)
matrix = ExpMatrix(genes=my_gene_names, samples=my_samples, X=my_X)
return matrix
