def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script rejoins annotations which were split with the "
"split-long-chromosomes script. Importantly, the \"max-size\" parameter here "
"must match the \"max-parameter\" used for that script.")
parser.add_argument(
'bed',
help="A BED file using the annotations from a GTF file "
"created by split-long-chromosomes")
parser.add_argument(
'out', help="A BED file in which the chromosomes have been rejoined")
parser.add_argument('--max-size',
help="The largest allowed size (in bp) for a "
"chromosome",
type=int,
default=default_max_size)
parser.add_argument('--num-procs',
help="The number of processors to use",
type=int,
default=default_num_procs)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
msg = "Reading BED"
logging.info(msg)
bed = bio.read_bed(args.bed)
msg = "Updating BED coordinates"
logging.info(msg)
original_coordinates = parallel.apply_parallel(bed,
args.num_procs,
get_original_coordinates,
args.max_size,
progress_bar=True)
original_coordinates_df = pd.DataFrame(original_coordinates)
bed['seqname'] = original_coordinates_df['seqname']
bed['start'] = original_coordinates_df['start'].astype(int)
bed['end'] = original_coordinates_df['end'].astype(int)
bed['thick_start'] = original_coordinates_df['thick_start'].astype(int)
bed['thick_end'] = original_coordinates_df['thick_end'].astype(int)
msg = "Writing updated BED to disk"
logging.info(msg)
bio.write_bed(bed, args.out)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description=
"This script reorders sequences in a fasta file to be in the same "
"order as the sequences in the STAR transcriptInfo.tab file.")
parser.add_argument('transcript_info',
help="The STAR transcriptInfo.txt file, which "
"contains the desired sequence order")
parser.add_argument(
'fasta',
help="The fasta file containing the sequences. The index "
"should already be created, and the keys for the index must exactly match the "
"sequence names in the transcript_info file.")
parser.add_argument(
'out', help="The output fasta file with the sequences rearranged")
parser.add_argument('--compress',
help="If this flag is present, then the output "
"will be gzipped",
action='store_true')
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
msg = "Reading STAR transcript file"
logging.info(msg)
transcript_info = bio.read_star_tr_file(args.transcript_info)
msg = "Reading transcript fasta file"
logging.info(msg)
fasta = bio.get_fasta_dict(args.fasta) #
trans_id_mapping = {x.split()[0]: x for x in fasta.keys()}
# open the tab file
if args.compress:
out = gzip.open(args.out, 'wt')
else:
out = open(args.out, 'w')
for i in tqdm.trange(len(transcript_info)):
trans_id = transcript_info.iloc[i]['ID']
fasta_id = trans_id_mapping[trans_id]
header = ">{}\n".format(fasta_id)
out.write(header)
seq = str(fasta[fasta_id])
wrapped_seq = textwrap.fill(seq)
out.write(wrapped_seq)
out.write("\n")
out.close()
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script matches QTI-seq peaks from (Gao et al., 2015) to ORFs "
"based on genomic coordinates.")
parser.add_argument('orfs', help="The ORFs (bed12+) file")
parser.add_argument('qti_peaks', help="The QTI-seq peak (BED6) files")
parser.add_argument('out', help="The augmented ORFs (BED12+) file")
parser.add_argument('--output-prefix', help="A string to prefix before all of the "
"fields related to the closest QTI-seq peak (if there is one)",
default=default_output_prefix)
parser.add_argument('--seqname-prefix', help="If present, this string is prepended "
"to all of the ORF seqnames. It is then removed again in the final output.",
default=default_seqname_prefix)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
programs = ['closestBed']
utils.check_programs_exist(programs)
msg = "Reading ORFs"
logger.info(msg)
orfs = bio.read_bed(args.orfs)
# we need to keep a copy that we use later for output
orfs_copy = orfs.copy()
# for matching qti-seq peaks, we only want to consider the start position of each ORF
# for forward strand ORFs, replace orf_genomic_end with orf_genomic_start
msg = "Updating genomic positions to consider only start codon"
logger.info(msg)
m_forward = orfs['strand'] == '+'
#forward_orfs = orfs[mask_forward]
#forward_orfs['end'] = forward_orfs['start'] + 1
orfs.loc[m_forward, 'end'] = orfs.loc[m_forward, 'start'] + 1
# for reverse ORFs, replace orf_genomic_start with orf_genomic_end
m_reverse = orfs['strand'] == '-'
#reverse_orfs = orfs[mask_reverse]
#reverse_orfs['start'] = reverse_orfs['end'] - 1
orfs.loc[m_reverse, 'start'] = orfs.loc[m_reverse, 'end'] - 1
# join together the orf start positions, correct the seqname and sort for bedtools
msg = "Converting ORF data frame to pybedtools"
logger.info(msg)
#orfs_start_only = pd.concat([forward_orfs, reverse_orfs])
#orfs_start_only['seqname'] = args.seqname_prefix + orfs_start_only['seqname']
#orfs_start_only = orfs_start_only.sort_values(['seqname', 'start'])
#orfs_bed = pybedtools.BedTool.from_dataframe(orfs_start_only)
orfs['seqname'] = args.seqname_prefix + orfs['seqname']
orfs = orfs.sort_values(['seqname', 'start'])
orfs_bed = pybedtools.BedTool.from_dataframe(orfs)
msg = "Reading QTI peaks"
qti_bed_df = bio.read_bed(args.qti_peaks)
qti_bed_df.columns = ["{}_{}".format(args.output_prefix, c) for c in qti_bed_df.columns]
# and covert to bed
msg = "Converting QTI peaks data frame to pybedtools"
logger.info(msg)
chr_field = '{}_chr'.format(args.output_prefix)
start_field = '{}_start'.format(args.output_prefix)
qti_bed_df = qti_bed_df.sort_values([chr_field, start_field])
qti_bed = pybedtools.BedTool.from_dataframe(qti_bed_df)
msg = "Finding closest QTI peak for all ORFs"
logger.info(msg)
# s means to consider strandedness
# D means to report the distance
# a means to report upstream positions (relative to orfs_start) as negative
closest_bed = orfs_bed.closest(qti_bed, s=True, D="a")
# covert back to a df for clean up
msg = "Converting closest results back to data frame"
logger.info(msg)
peak_distance_field = '{}_peak_distance'.format(args.output_prefix)
closest_bed_fields = list(orfs.columns) + list(qti_bed_df.columns) + [peak_distance_field]
closest_df = closest_bed.to_dataframe(names=closest_bed_fields, index_col=False)
# now join the relevant fields back to the original ORF data frame
fields_to_join = list(qti_bed_df.columns) + [peak_distance_field, 'id']
closest_df = closest_df[fields_to_join]
msg = "Joining closest results to original ORFs"
logger.info(msg)
orf_qti_df = pd.merge(orfs_copy, closest_df, on='id', how='left')
orf_qti_df = orf_qti_df.sort_values(['seqname', 'start'])
# and write this out as a bed12+ file
msg = "Writing joined BED12+ file to disk"
logger.info(msg)
bio.write_bed(orf_qti_df, args.out)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description=
"This script creates a plot showing the fraction of predicted ORFs "
"which have a set amount of peptide coverage.")
parser.add_argument(
'rpbp_peptide_matches',
help="The (csv) file containing the peptides "
"matching to each ORF predicted as translated using Rp-Bp (produced by "
"get-orf-peptide-matches)")
parser.add_argument(
'rpchi_peptide_matches',
help="The (csv) file containing the peptides "
"matching to each ORF predicted as translated using Rp-chi (produced by "
"get-orf-peptide-matches)")
parser.add_argument('out', help="The output (image) file")
parser.add_argument('-l',
'--min-length',
help="The minimum length for ORFs (in "
"nucleotides) to consider in the analyis",
type=int,
default=default_min_length)
parser.add_argument('-p',
'--num-cpus',
help="The number of processors to use",
type=int,
default=default_num_cpus)
parser.add_argument('--title', default=default_title)
parser.add_argument('--fontsize', type=int, default=default_fontsize)
parser.add_argument('--note-fontsize',
type=int,
default=default_note_fontsize)
parser.add_argument('--line-width', type=int, default=default_line_width)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
msg = "Reading predictions"
logging.info(msg)
rpbp_peptide_matches = pd.read_csv(args.rpbp_peptide_matches)
rpchi_peptide_matches = pd.read_csv(args.rpchi_peptide_matches)
if args.min_length > 0:
msg = "Filtering predictions by: length > {}".format(args.min_length)
logging.warning(msg)
# multiply by 3 because the orf sequences are amino acid sequences
bf_lengths = rpbp_peptide_matches['orf_sequence'].str.len() * 3
m_bf_length = bf_lengths > args.min_length
rpbp_peptide_matches = rpbp_peptide_matches[m_bf_length]
chisq_lengths = rpchi_peptide_matches['orf_sequence'].str.len() * 3
m_chisq_length = chisq_lengths > args.min_length
rpchi_peptide_matches = rpchi_peptide_matches[m_chisq_length]
msg = "Calculating Rp-Bp coverage"
logging.info(msg)
bf_coverage = parallel.apply_parallel(rpbp_peptide_matches,
args.num_cpus,
get_orf_coverage,
progress_bar=True)
bf_coverage = pd.DataFrame(bf_coverage)
msg = "Calculating Rp-chi coverage"
logging.info(msg)
chisq_coverage = parallel.apply_parallel(rpchi_peptide_matches,
args.num_cpus,
get_orf_coverage,
progress_bar=True)
chisq_coverage = pd.DataFrame(chisq_coverage)
msg = "Creating image"
logging.info(msg)
# plot the empirical distribution of ORF lengths
hist_min = 0
hist_max = 1.1
hist_step = 0.05
hist_range = (hist_min, hist_max)
hist_bins = np.arange(hist_min, hist_max, hist_step)
bf_covered_hist, b = np.histogram(bf_coverage['coverage'],
bins=hist_bins,
range=hist_range,
density=True)
chisq_covered_hist, b = np.histogram(chisq_coverage['coverage'],
bins=hist_bins,
range=hist_range,
density=True)
# now, normalize the histograms
bf_covered_hist = bf_covered_hist / np.sum(bf_covered_hist)
chisq_covered_hist = chisq_covered_hist / np.sum(chisq_covered_hist)
# multiply by 100 to give actual percentages
bf_covered_hist = 100 * bf_covered_hist
chisq_covered_hist = 100 * chisq_covered_hist
hist_bins = 100 * hist_bins
fig, ax = plt.subplots(figsize=(10, 5))
cm = plt.cm.gist_earth
x = np.arange(len(bf_covered_hist))
bf_label = r'\textsc{Rp-Bp}'
ax.plot(x,
bf_covered_hist,
color=cm(0.1),
label=bf_label,
linewidth=args.line_width,
linestyle='--',
marker='^')
chisq_label = r'\textsc{Rp-$\chi^2$}'
ax.plot(x,
chisq_covered_hist,
color=cm(0.3),
label=chisq_label,
linewidth=args.line_width,
linestyle='-.',
marker='D')
ax.set_xlabel('Peptide Coverage (\%)', fontsize=args.fontsize)
ax.set_ylabel('\% of predicted ORFs', fontsize=args.fontsize)
if args.title is not None and len(args.title) > 0:
ax.set_title(args.title, fontsize=args.fontsize)
# only show every 20% on the x-axis
ax.set_xticks(x[::4])
ax.set_xticklabels(hist_bins[::4])
def my_formatter_fun(x, p):
return "${:d}$".format(20 * p)
ax.get_xaxis().set_major_formatter(
matplotlib.ticker.FuncFormatter(my_formatter_fun))
# hide the "0" tick label
yticks = ax.yaxis.get_major_ticks()
yticks[0].label1.set_visible(False)
ax.set_xlim((0, len(bf_covered_hist) - 1))
ax.set_ylim((0, 10))
ax.legend(loc='upper right', fontsize=args.fontsize)
ax.tick_params(axis='both', which='major', labelsize=args.note_fontsize)
fig.savefig(args.out, bbox_inches='tight')
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description=
"This script matches QTI-seq peaks from (Gao et al., 2015) to ORFs "
"based on genomic coordinates.")
parser.add_argument('orfs', help="The ORFs (bed12+) file")
parser.add_argument('qti_peaks', help="The QTI-seq peak (BED6) files")
parser.add_argument('out', help="The augmented ORFs (BED12+) file")
parser.add_argument(
'--output-prefix',
help="A string to prefix before all of the "
"fields related to the closest QTI-seq peak (if there is one)",
default=default_output_prefix)
parser.add_argument(
'--seqname-prefix',
help="If present, this string is prepended "
"to all of the ORF seqnames. It is then removed again in the final output.",
default=default_seqname_prefix)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
programs = ['closestBed']
utils.check_programs_exist(programs)
msg = "Reading ORFs"
logger.info(msg)
orfs = bio.read_bed(args.orfs)
# we need to keep a copy that we use later for output
orfs_copy = orfs.copy()
# for matching qti-seq peaks, we only want to consider the start position of each ORF
# for forward strand ORFs, replace orf_genomic_end with orf_genomic_start
msg = "Updating genomic positions to consider only start codon"
logger.info(msg)
m_forward = orfs['strand'] == '+'
#forward_orfs = orfs[mask_forward]
#forward_orfs['end'] = forward_orfs['start'] + 1
orfs.loc[m_forward, 'end'] = orfs.loc[m_forward, 'start'] + 1
# for reverse ORFs, replace orf_genomic_start with orf_genomic_end
m_reverse = orfs['strand'] == '-'
#reverse_orfs = orfs[mask_reverse]
#reverse_orfs['start'] = reverse_orfs['end'] - 1
orfs.loc[m_reverse, 'start'] = orfs.loc[m_reverse, 'end'] - 1
# join together the orf start positions, correct the seqname and sort for bedtools
msg = "Converting ORF data frame to pybedtools"
logger.info(msg)
#orfs_start_only = pd.concat([forward_orfs, reverse_orfs])
#orfs_start_only['seqname'] = args.seqname_prefix + orfs_start_only['seqname']
#orfs_start_only = orfs_start_only.sort_values(['seqname', 'start'])
#orfs_bed = pybedtools.BedTool.from_dataframe(orfs_start_only)
orfs['seqname'] = args.seqname_prefix + orfs['seqname']
orfs = orfs.sort_values(['seqname', 'start'])
orfs_bed = pybedtools.BedTool.from_dataframe(orfs)
msg = "Reading QTI peaks"
qti_bed_df = bio.read_bed(args.qti_peaks)
qti_bed_df.columns = [
"{}_{}".format(args.output_prefix, c) for c in qti_bed_df.columns
]
# and covert to bed
msg = "Converting QTI peaks data frame to pybedtools"
logger.info(msg)
chr_field = '{}_chr'.format(args.output_prefix)
start_field = '{}_start'.format(args.output_prefix)
qti_bed_df = qti_bed_df.sort_values([chr_field, start_field])
qti_bed = pybedtools.BedTool.from_dataframe(qti_bed_df)
msg = "Finding closest QTI peak for all ORFs"
logger.info(msg)
# s means to consider strandedness
# D means to report the distance
# a means to report upstream positions (relative to orfs_start) as negative
closest_bed = orfs_bed.closest(qti_bed, s=True, D="a")
# covert back to a df for clean up
msg = "Converting closest results back to data frame"
logger.info(msg)
peak_distance_field = '{}_peak_distance'.format(args.output_prefix)
closest_bed_fields = list(orfs.columns) + list(
qti_bed_df.columns) + [peak_distance_field]
closest_df = closest_bed.to_dataframe(names=closest_bed_fields,
index_col=False)
# now join the relevant fields back to the original ORF data frame
fields_to_join = list(qti_bed_df.columns) + [peak_distance_field, 'id']
closest_df = closest_df[fields_to_join]
msg = "Joining closest results to original ORFs"
logger.info(msg)
orf_qti_df = pd.merge(orfs_copy, closest_df, on='id', how='left')
orf_qti_df = orf_qti_df.sort_values(['seqname', 'start'])
# and write this out as a bed12+ file
msg = "Writing joined BED12+ file to disk"
logger.info(msg)
bio.write_bed(orf_qti_df, args.out)
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script plots the (log) Bayes factor against the estimated "
"RPKM for all ORFs. All relevant values will be clipped according to the "
"specified arguments for viewing.")
parser.add_argument('config', help="The (yaml) config file")
parser.add_argument('name', help="The name of the dataset or replicate to plot")
parser.add_argument('out', help="The output image file")
parser.add_argument('-p', '--use-predictions', help="If this flag is present, then "
"the \"predicted ORFs\" files will be used. Otherwise, all ORFs in the dataset "
"will be visualized.", action='store_true')
parser.add_argument('-r', '--is-replicate', help="If the name corresponds to one "
"of the replicates, this flag must be used to ensure the filenames are "
"handled correctly.", action='store_true')
parser.add_argument('--title', default=default_title)
parser.add_argument('--min-rpkm', type=float, default=default_min_rpkm)
parser.add_argument('--max-rpkm', type=float, default=default_max_rpkm)
parser.add_argument('--min-bf', type=float, default=default_min_bf)
parser.add_argument('--max-bf', type=float, default=default_max_bf)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
config = yaml.load(open(args.config))
note = config.get('note', None)
if args.is_replicate:
lengths = None
offsets = None
else:
lengths, offsets = ribo_utils.get_periodic_lengths_and_offsets(config, args.name)
fraction = config.get('smoothing_fraction', None)
reweighting_iterations = config.get('smoothing_reweighting_iterations', None)
# we will need these to get the appropriate log BFs
if args.use_predictions:
bayes_factors = filenames.get_riboseq_predicted_orfs(config['riboseq_data'], args.name,
length=lengths, offset=offsets, is_unique=True, note=note, is_smooth=True,
fraction=fraction, reweighting_iterations=reweighting_iterations)
else:
bayes_factors = filenames.get_riboseq_bayes_factors(config['riboseq_data'], args.name,
length=lengths, offset=offsets, is_unique=True, note=note, is_smooth=True,
fraction=fraction, reweighting_iterations=reweighting_iterations)
if not os.path.exists(bayes_factors):
msg = ("Could not find the Bayes factor file: {}\nIf this is for a particular "
"sample and the --merge-replicates option was used, this is not a problem. "
"Will not create this scatter plot".format(bayes_factors))
logger.warning(msg)
return
msg = "Reading Bayes factors"
logger.info(msg)
bayes_factors = bio.read_bed(bayes_factors)
# we need these to get the raw counts for calculating RPKM
# we always need all of the counts, so no need to check which ORFs
rpchi_pvalues = filenames.get_riboseq_bayes_factors(config['riboseq_data'], args.name,
length=lengths, offset=offsets, is_unique=True, note=note, is_smooth=False)
if not os.path.exists(rpchi_pvalues):
msg = ("Could not find the Rp-chi pvalues file: {}\nIf this is for a particular "
"sample and the --merge-replicates option was used, this is not a problem. "
"Will not create this scatter plot".format(rpchi_pvalues))
logger.warning(msg)
return
msg = "Reading Rp-chi pvalues"
logger.info(msg)
rpchi_pvalues = bio.read_bed(rpchi_pvalues)
msg = "Calculating RPKM values"
logger.info(msg)
# we approximate the number of mapping reads as the sum across all ORFs.
# this double-counts some reads
num_reads = np.sum(rpchi_pvalues['profile_sum'])
all_rpkm = (1e6 * rpchi_pvalues['x_1_sum']) / (rpchi_pvalues['orf_len'] * num_reads)
# only include things that have some reads in the visualization
m_rpkm = all_rpkm > 0
msg = "Creating plot"
logger.info(msg)
fig, ax = plt.subplots(figsize=(10, 5))
cm = plt.cm.gist_earth
for i, orf_label in enumerate(ribo_utils.orf_type_labels):
orf_types = ribo_utils.orf_type_labels_mapping[orf_label]
m_type = bayes_factors['orf_type'].isin(orf_types)
# now, pull out the RPKMs
if args.use_predictions:
# if we are using predictions, we have to filter and join
orf_ids = bayes_factors.loc[m_rpkm & m_type, 'id']
bfs = np.array(bayes_factors.loc[m_rpkm & m_type, 'bayes_factor_mean'])
m_ids = rpchi_pvalues['id'].isin(orf_ids)
rpkm = np.array(all_rpkm[m_ids])
else:
# otherwise ,the data frames match, so we can just use the masks
rpkm = np.array(all_rpkm[m_rpkm & m_type])
bfs = np.array(bayes_factors.loc[m_rpkm & m_type, 'bayes_factor_mean'])
rpkm = np.clip(rpkm, args.min_rpkm, args.max_rpkm)
bfs = np.clip(bfs, args.min_bf, args.max_bf)
color = i / len(ribo_utils.orf_type_labels)
color = cm(color)
label = "{} ({})".format(orf_label, len(rpkm))
ax.scatter(rpkm, bfs, label=label, color=color, edgecolor='k')
ax.set_ylim((args.min_bf * 1.5, args.max_bf * 1.5))
ax.set_xlim((args.min_rpkm * 1.5, args.max_rpkm * 1.25))
ax.set_yscale('symlog')
ax.set_xscale('symlog')
ax.set_xlabel('RPKM')
ax.set_ylabel('log BF')
lgd = ax.legend(loc='center right', bbox_to_anchor=(1.5, 0.5))
if len(args.title) > 0:
ax.set_title(args.title)
fig.savefig(args.out, bbox_inches='tight', bbox_extra_artists=(lgd,))
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script creates a plot showing the fraction of predicted ORFs "
"which have a set amount of peptide coverage.")
parser.add_argument('rpbp_peptide_matches', help="The (csv) file containing the peptides "
"matching to each ORF predicted as translated using Rp-Bp (produced by "
"get-orf-peptide-matches)")
parser.add_argument('rpchi_peptide_matches', help="The (csv) file containing the peptides "
"matching to each ORF predicted as translated using Rp-chi (produced by "
"get-orf-peptide-matches)")
parser.add_argument('out', help="The output (image) file")
parser.add_argument('-l', '--min-length', help="The minimum length for ORFs (in "
"nucleotides) to consider in the analyis", type=int, default=default_min_length)
parser.add_argument('-p', '--num-cpus', help="The number of processors to use", type=int,
default=default_num_cpus)
parser.add_argument('--title', default=default_title)
parser.add_argument('--fontsize', type=int, default=default_fontsize)
parser.add_argument('--note-fontsize', type=int, default=default_note_fontsize)
parser.add_argument('--line-width', type=int, default=default_line_width)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
msg = "Reading predictions"
logging.info(msg)
rpbp_peptide_matches = pd.read_csv(args.rpbp_peptide_matches)
rpchi_peptide_matches = pd.read_csv(args.rpchi_peptide_matches)
if args.min_length > 0:
msg = "Filtering predictions by: length > {}".format(args.min_length)
logging.warning(msg)
# multiply by 3 because the orf sequences are amino acid sequences
bf_lengths = rpbp_peptide_matches['orf_sequence'].str.len() * 3
m_bf_length = bf_lengths > args.min_length
rpbp_peptide_matches = rpbp_peptide_matches[m_bf_length]
chisq_lengths = rpchi_peptide_matches['orf_sequence'].str.len() * 3
m_chisq_length = chisq_lengths > args.min_length
rpchi_peptide_matches = rpchi_peptide_matches[m_chisq_length]
msg = "Calculating Rp-Bp coverage"
logging.info(msg)
bf_coverage = parallel.apply_parallel(rpbp_peptide_matches,
args.num_cpus,
get_orf_coverage,
progress_bar=True)
bf_coverage = pd.DataFrame(bf_coverage)
msg = "Calculating Rp-chi coverage"
logging.info(msg)
chisq_coverage = parallel.apply_parallel(rpchi_peptide_matches,
args.num_cpus,
get_orf_coverage,
progress_bar=True)
chisq_coverage = pd.DataFrame(chisq_coverage)
msg = "Creating image"
logging.info(msg)
# plot the empirical distribution of ORF lengths
hist_min = 0
hist_max = 1.1
hist_step = 0.05
hist_range = (hist_min, hist_max)
hist_bins = np.arange(hist_min, hist_max, hist_step)
bf_covered_hist, b = np.histogram(bf_coverage['coverage'],
bins=hist_bins,
range=hist_range,
density=True)
chisq_covered_hist, b = np.histogram(chisq_coverage['coverage'],
bins=hist_bins,
range=hist_range,
density=True)
# now, normalize the histograms
bf_covered_hist = bf_covered_hist / np.sum(bf_covered_hist)
chisq_covered_hist = chisq_covered_hist / np.sum(chisq_covered_hist)
# multiply by 100 to give actual percentages
bf_covered_hist = 100 * bf_covered_hist
chisq_covered_hist = 100 * chisq_covered_hist
hist_bins = 100*hist_bins
fig, ax = plt.subplots(figsize=(10,5))
cm = plt.cm.gist_earth
x = np.arange(len(bf_covered_hist))
bf_label = r'\textsc{Rp-Bp}'
ax.plot(x,
bf_covered_hist,
color=cm(0.1),
label=bf_label,
linewidth=args.line_width,
linestyle='--',
marker='^')
chisq_label = r'\textsc{Rp-$\chi^2$}'
ax.plot(x,
chisq_covered_hist,
color=cm(0.3),
label=chisq_label,
linewidth=args.line_width,
linestyle='-.',
marker='D')
ax.set_xlabel('Peptide Coverage (\%)', fontsize=args.fontsize)
ax.set_ylabel('\% of predicted ORFs', fontsize=args.fontsize)
if args.title is not None and len(args.title) > 0:
ax.set_title(args.title, fontsize=args.fontsize)
# only show every 20% on the x-axis
ax.set_xticks(x[::4])
ax.set_xticklabels(hist_bins[::4])
def my_formatter_fun(x, p):
return "${:d}$".format(20*p)
ax.get_xaxis().set_major_formatter(matplotlib.ticker.FuncFormatter(my_formatter_fun))
# hide the "0" tick label
yticks = ax.yaxis.get_major_ticks()
yticks[0].label1.set_visible(False)
ax.set_xlim((0, len(bf_covered_hist)-1))
ax.set_ylim((0,10))
ax.legend(loc='upper right', fontsize=args.fontsize)
ax.tick_params(axis='both', which='major', labelsize=args.note_fontsize)
fig.savefig(args.out, bbox_inches='tight')
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script extracts reads of various types from a processed dataset "
"to create an \"interesting\" test dataset.\n\nN.B. This script is not "
"particularly efficient and is not intended for external use.")
parser.add_argument('config', help="The (yaml) config file")
parser.add_argument('name', help="The name of the dataset to use to create the test data")
parser.add_argument('out', help="The output (fasta.gz) which contains reads of various "
"types, subject to the other parameters")
parser.add_argument('-r', '--reference', help="The name of the reference sequence (chromosome) "
"from which aligned reads will be extracted", default=default_reference)
parser.add_argument('-m', '--max-reads', help="At most <max_reads> reads of each type "
"will be included in the final output", type=int, default=default_max_reads)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
config = yaml.load(open(args.config))
note = config.get('note', None)
# keep multimappers?
is_unique = not ('keep_riboseq_multimappers' in config)
###
msg = "Reading alignments from BAM file"
logging.info(msg)
bam_file = filenames.get_riboseq_bam(config['riboseq_data'],
args.name, is_unique=is_unique, note=note)
bam = pysam.AlignmentFile(bam_file)
alignments = bam.fetch(reference=args.reference)
num_alignments = bam.count(reference=args.reference)
alignment_qnames = {get_first_token(a.qname) for a in alignments}
###
msg = "Extracting a similar number of rRNA reads"
logging.info(msg)
with_rrna = filenames.get_with_rrna_fastq(config['riboseq_data'], args.name,
note=note)
rrna = bio.get_read_iterator(with_rrna, is_fasta=False)
rrna = itertools.islice(rrna, num_alignments)
rrna_qnames = {get_first_token(read[0]) for read in rrna}
###
msg = "Extracting a similar number of reads which do not uniquely map to the genome"
logging.info(msg)
# first, pull out the qnames of all alignments
all_alignments = bam.fetch()
all_alignment_qnames = {get_first_token(a.qname) for a in all_alignments}
# iterate over all reads which passed the rRNA and quality filtering
without_rrna_file = filenames.get_without_rrna_fastq(config['riboseq_data'],
args.name, note=note)
without_rrna = bio.get_read_iterator(without_rrna_file, is_fasta=False)
without_rrna_qnames = {get_first_token(read[0]) for read in without_rrna}
no_mapping_qnames = without_rrna_qnames - all_alignment_qnames
###
msg = "Extracting a similar number of reads which are filtered due to quality issues"
logging.info(msg)
# first, pull in all the reads and their names
msg = "Reading all reads into a dictionary"
logging.debug(msg)
raw_data_file = config['riboseq_samples'][args.name]
raw_data = bio.get_fasta_dict(raw_data_file, is_fasta=False, key_fn=get_first_token)
raw_data_qnames = set(raw_data.keys())
msg = "Reading quality scores into dictionary"
logging.debug(msg)
raw_data_qual = bio.get_fastq_qual_dict(raw_data_file, key_fn=get_first_token)
# now, the reads which _did_ pass quality filtering
msg = "Reading reads which pass quality filtering into a set"
logging.debug(msg)
without_adapters_file = filenames.get_without_adapters_fastq(config['riboseq_data'], args.name, note=note)
without_adapters = bio.get_read_iterator(without_adapters_file, is_fasta=False)
without_adapters_qnames = {get_first_token(read[0]) for read in without_adapters}
# and pull out the qnames of the reads which did not pass quality filtering
filtered_reads_qnames = raw_data_qnames - without_adapters_qnames
###
msg = "Constructing the set of reads to output"
logging.info(msg)
alignment_raw_data = {qname: raw_data[qname]
for qname in itertools.islice(alignment_qnames, args.max_reads)}
rrna_raw_data = {qname: raw_data[qname]
for qname in itertools.islice(rrna_qnames, args.max_reads)}
no_mapping_raw_data = {qname: raw_data[qname]
for qname in itertools.islice(no_mapping_qnames, args.max_reads)}
filtered_reads_raw_data = {qname: raw_data[qname]
for qname in itertools.islice(filtered_reads_qnames, args.max_reads)}
out_raw_data = alignment_raw_data
out_raw_data.update(rrna_raw_data)
out_raw_data.update(no_mapping_raw_data)
out_raw_data.update(filtered_reads_raw_data)
###
msg = "Writing sequences to disk"
logging.info(msg)
bio.write_fastq(out_raw_data, raw_data_qual, args.out, progress_bar=True)
def main():
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description=
"This script plots the (log) Bayes factor against the estimated "
"RPKM for all ORFs. All relevant values will be clipped according to the "
"specified arguments for viewing.")
parser.add_argument('config', help="The (yaml) config file")
parser.add_argument('name',
help="The name of the dataset or replicate to plot")
parser.add_argument('out', help="The output image file")
parser.add_argument(
'-p',
'--use-predictions',
help="If this flag is present, then "
"the \"predicted ORFs\" files will be used. Otherwise, all ORFs in the dataset "
"will be visualized.",
action='store_true')
parser.add_argument(
'-r',
'--is-replicate',
help="If the name corresponds to one "
"of the replicates, this flag must be used to ensure the filenames are "
"handled correctly.",
action='store_true')
parser.add_argument('--title', default=default_title)
parser.add_argument('--min-rpkm', type=float, default=default_min_rpkm)
parser.add_argument('--max-rpkm', type=float, default=default_max_rpkm)
parser.add_argument('--min-bf', type=float, default=default_min_bf)
parser.add_argument('--max-bf', type=float, default=default_max_bf)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
config = yaml.load(open(args.config))
note = config.get('note', None)
if args.is_replicate:
lengths = None
offsets = None
else:
lengths, offsets = ribo_utils.get_periodic_lengths_and_offsets(
config, args.name)
fraction = config.get('smoothing_fraction', None)
reweighting_iterations = config.get('smoothing_reweighting_iterations',
None)
# we will need these to get the appropriate log BFs
if args.use_predictions:
bayes_factors = filenames.get_riboseq_predicted_orfs(
config['riboseq_data'],
args.name,
length=lengths,
offset=offsets,
is_unique=True,
note=note,
is_smooth=True,
fraction=fraction,
reweighting_iterations=reweighting_iterations)
else:
bayes_factors = filenames.get_riboseq_bayes_factors(
config['riboseq_data'],
args.name,
length=lengths,
offset=offsets,
is_unique=True,
note=note,
is_smooth=True,
fraction=fraction,
reweighting_iterations=reweighting_iterations)
if not os.path.exists(bayes_factors):
msg = (
"Could not find the Bayes factor file: {}\nIf this is for a particular "
"sample and the --merge-replicates option was used, this is not a problem. "
"Will not create this scatter plot".format(bayes_factors))
logger.warning(msg)
return
msg = "Reading Bayes factors"
logger.info(msg)
bayes_factors = bio.read_bed(bayes_factors)
# we need these to get the raw counts for calculating RPKM
# we always need all of the counts, so no need to check which ORFs
rpchi_pvalues = filenames.get_riboseq_bayes_factors(config['riboseq_data'],
args.name,
length=lengths,
offset=offsets,
is_unique=True,
note=note,
is_smooth=False)
if not os.path.exists(rpchi_pvalues):
msg = (
"Could not find the Rp-chi pvalues file: {}\nIf this is for a particular "
"sample and the --merge-replicates option was used, this is not a problem. "
"Will not create this scatter plot".format(rpchi_pvalues))
logger.warning(msg)
return
msg = "Reading Rp-chi pvalues"
logger.info(msg)
rpchi_pvalues = bio.read_bed(rpchi_pvalues)
msg = "Calculating RPKM values"
logger.info(msg)
# we approximate the number of mapping reads as the sum across all ORFs.
# this double-counts some reads
num_reads = np.sum(rpchi_pvalues['profile_sum'])
all_rpkm = (1e6 * rpchi_pvalues['x_1_sum']) / (rpchi_pvalues['orf_len'] *
num_reads)
# only include things that have some reads in the visualization
m_rpkm = all_rpkm > 0
msg = "Creating plot"
logger.info(msg)
fig, ax = plt.subplots(figsize=(10, 5))
cm = plt.cm.gist_earth
for i, orf_label in enumerate(ribo_utils.orf_type_labels):
orf_types = ribo_utils.orf_type_labels_mapping[orf_label]
m_type = bayes_factors['orf_type'].isin(orf_types)
# now, pull out the RPKMs
if args.use_predictions:
# if we are using predictions, we have to filter and join
orf_ids = bayes_factors.loc[m_rpkm & m_type, 'id']
bfs = np.array(bayes_factors.loc[m_rpkm & m_type,
'bayes_factor_mean'])
m_ids = rpchi_pvalues['id'].isin(orf_ids)
rpkm = np.array(all_rpkm[m_ids])
else:
# otherwise ,the data frames match, so we can just use the masks
rpkm = np.array(all_rpkm[m_rpkm & m_type])
bfs = np.array(bayes_factors.loc[m_rpkm & m_type,
'bayes_factor_mean'])
rpkm = np.clip(rpkm, args.min_rpkm, args.max_rpkm)
bfs = np.clip(bfs, args.min_bf, args.max_bf)
color = i / len(ribo_utils.orf_type_labels)
color = cm(color)
label = "{} ({})".format(orf_label, len(rpkm))
ax.scatter(rpkm, bfs, label=label, color=color, edgecolor='k')
ax.set_ylim((args.min_bf * 1.5, args.max_bf * 1.5))
ax.set_xlim((args.min_rpkm * 1.5, args.max_rpkm * 1.25))
ax.set_yscale('symlog')
ax.set_xscale('symlog')
ax.set_xlabel('RPKM')
ax.set_ylabel('log BF')
lgd = ax.legend(loc='center right', bbox_to_anchor=(1.5, 0.5))
if len(args.title) > 0:
ax.set_title(args.title)
fig.savefig(args.out, bbox_inches='tight', bbox_extra_artists=(lgd, ))
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description="This script creates a simple latex document.")
parser.add_argument('config', help="The (yaml) config file for the project")
parser.add_argument('out', help="The path for the output files")
parser.add_argument('-l', '--min-orf-length', help="The minimum length for ORFs (in "
"nucleotides) to consider in the analyis", type=int, default=default_min_orf_length)
parser.add_argument('--num-cpus', help="The number of processors to use for counting "
"the matching peptides coverage for each predicted ORF.",
type=int, default=default_num_cpus)
parser.add_argument('--overwrite', help="If this flag is present, existing files will "
"be overwritten.", action='store_true')
parser.add_argument('--note', help="If this option is given, it will be used in the "
"filenames.\n\nN.B. This REPLACES the note in the config file.", default=default_note)
utils.add_logging_options(parser)
args = parser.parse_args()
utils.update_logging(args)
config = yaml.load(open(args.config))
# keep multimappers?
is_unique = not ('keep_riboseq_multimappers' in config)
programs = [
'create-orf-peptide-coverage-line-graph'
]
utils.check_programs_exist(programs)
required_keys = [
'riboseq_data',
'riboseq_samples'
]
utils.check_keys_exist(config, required_keys)
# make sure the path to the output file exists
os.makedirs(args.out, exist_ok=True)
note_str = config.get('note', None)
out_note_str = note_str
if args.note is not None and len(args.note) > 0:
out_note_str = args.note
project_name = config.get("project_name", default_project_name)
title = "Proteomics analysis for {}".format(project_name)
abstract = "This document shows the results of proteomics analysis."
header = latex.get_header_text(title, abstract)
footer = latex.get_footer_text()
tex_file = os.path.join(args.out, "proteomics-report.tex")
with open(tex_file, 'w') as out:
out.write(header)
out.write("\n")
title = "ORF peptide coverage"
latex.section(out, title)
for name, data in config['riboseq_samples'].items():
msg = "Processing sample: {}".format(name)
logging.info(msg)
logging.debug("overwrite: {}".format(args.overwrite))
create_figures(args.config, config, name, args)
title = name
latex.subsection(out, title)
try:
lengths, offsets = riboutils.ribo_utils.get_periodic_lengths_and_offsets(
config, name, is_unique=is_unique)
except FileNotFoundError:
msg = "Could not parse out lengths and offsets for sample: {}. Skipping".format(name)
logging.error(msg)
return
peptide_coverage_line_graph = filenames.get_peptide_coverage_line_graph(config['riboseq_data'],
name, length=lengths, offset=offsets, is_unique=is_unique, note=out_note_str)
if os.path.exists(peptide_coverage_line_graph):
latex.begin_figure(out)
latex.write_graphics(out, peptide_coverage_line_graph, width=0.9)
latex.end_figure(out)
else:
text = "Problem creating ORF peptide coverage plot"
out.write(text)
out.write("\n")
latex.clearpage(out)
out.write(footer)
os.chdir(args.out)
cmd = "pdflatex -shell-escape proteomics-report"
utils.check_call(cmd)
utils.check_call(cmd) # call again to fix references
