def main():
args = get_parser().parse_args()
megalodon.mkdir(args.output_megalodon_results_dir, False)
out_vars_db = variants.VarsDb(
mh.get_megalodon_fn(args.output_megalodon_results_dir, mh.PR_VAR_NAME),
read_only=False,
loc_index_in_memory=not args.var_locations_on_disk)
for mega_dir in args.megalodon_results_dirs:
# full read only mode with no indices read into memory
vars_db = variants.VarsDb(mh.get_megalodon_fn(mega_dir,
mh.PR_VAR_NAME),
read_only=True,
chrm_index_in_memory=False,
alt_index_in_memory=False,
uuid_index_in_memory=False)
for (score, uuid, strand, alt_seq, ref_seq, pos, var_name, test_end,
test_start, chrm, chrm_len) in vars_db.iter_data():
chrm_id = out_vars_db.get_chrm_id_or_insert(chrm, chrm_len)
loc_id = out_vars_db.get_loc_id_or_insert(chrm_id, test_start,
test_end, pos, ref_seq,
var_name)
alt_id = out_vars_db.get_alt_id_or_insert(alt_seq)
read_id = out_vars_db.get_read_id_or_insert(uuid)
out_vars_db.insert_data(score, loc_id, alt_id, read_id)
if out_vars_db.chrm_idx_in_mem:
out_vars_db.create_chrm_index()
if out_vars_db.loc_idx_in_mem:
out_vars_db.create_loc_index()
if out_vars_db.alt_idx_in_mem:
out_vars_db.create_alt_index()
out_vars_db.create_data_covering_index()
out_vars_db.close()
def main():
args = get_parser().parse_args()
vars_db = variants.VarsDb(mh.get_megalodon_fn(args.megalodon_results_dir,
mh.PR_VAR_NAME),
uuid_strand_index_in_memory=True)
vars_txt_fp = open(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_VAR_TXT_NAME)
if args.out_filename is None else args.out_filename, 'w')
vars_txt_fp.write('\t'.join(vars_db.text_field_names) + '\n')
for (loc_id, loc_chrm, pos, ref_seq, var_name,
has_context_base) in tqdm(vars_db.iter_locs(),
total=vars_db.get_num_uniq_var_loc(),
smoothing=0):
pr_var_stats = vars_db.get_loc_stats(
(loc_id, loc_chrm, pos, ref_seq, var_name))
alt_type_stats = defaultdict(dict)
for r_stats in pr_var_stats:
alt_type_stats[r_stats.read_id][r_stats.alt_seq] = (r_stats.score,
r_stats.chrm)
var_out_text = ''
for read_id, r_var_stats in alt_type_stats.items():
uuid, strand = vars_db.get_uuid_strand(read_id)
alt_lps = np.array(list(zip(*r_var_stats.values()))[0])
with np.errstate(divide='ignore'):
ref_lp = np.log1p(-np.exp(alt_lps).sum())
var_out_text += '\n'.join(
(('\t'.join('{}' for _ in vars_db.text_field_names)).format(
uuid, chrm, strand, pos, ref_lp, alt_lp, ref_seq, alt_seq,
var_name)
for alt_seq, (alt_lp, chrm) in r_var_stats.items())) + '\n'
vars_txt_fp.write(var_out_text)
return
def _main(args):
mods_db = mods.ModsDb(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_NAME))
mods_txt_fp = open(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_TXT_NAME)
if args.out_filename is None else args.out_filename, 'w')
mods_txt_fp.write('\t'.join(mods_db.text_field_names) + '\n')
for pos_id, pos_chrm, strand, pos in tqdm(
mods_db.iter_pos(), total=mods_db.get_num_uniq_mod_pos(),
smoothing=0):
pr_mod_stats = mods_db.get_pos_stats(
(pos_id, pos_chrm, strand, pos), return_uuids=True)
mod_type_stats = defaultdict(dict)
for r_stats in pr_mod_stats:
mod_type_stats[r_stats.read_id][r_stats.mod_base] = (
r_stats.score, r_stats.raw_motif, r_stats.motif_pos,
r_stats.chrm)
mod_out_text = ''
for read_id, r_mod_stats in mod_type_stats.items():
mod_lps = np.array(list(zip(*r_mod_stats.values()))[0])
with np.errstate(divide='ignore'):
can_lp = np.log1p(-np.exp(mod_lps).sum())
mod_out_text += '\n'.join((
('\t'.join('{}' for _ in mods_db.text_field_names)).format(
read_id, chrm, strand, pos, mod_lp,
can_lp, mod_base, '{}:{}'.format(raw_motif, motif_pos))
for mod_base, (mod_lp, raw_motif, motif_pos, chrm) in
r_mod_stats.items())) + '\n'
mods_txt_fp.write(mod_out_text)
def main():
args = get_parser().parse_args()
megalodon.mkdir(args.output_megalodon_results_dir, False)
out_mods_db = mods.ModsDb(
mh.get_megalodon_fn(args.output_megalodon_results_dir, mh.PR_MOD_NAME),
read_only=False,
pos_index_in_memory=not args.mod_positions_on_disk)
for mega_dir in args.megalodon_results_dirs:
# full read only mode with no indices read into memory
mods_db = mods.ModsDb(mh.get_megalodon_fn(mega_dir, mh.PR_MOD_NAME),
read_only=True,
chrm_index_in_memory=False,
mod_index_in_memory=False,
uuid_index_in_memory=False)
for (score, uuid, mod_base, motif, motif_pos, raw_motif, strand, pos,
chrm, chrm_len) in mods_db.iter_data():
chrm_id = out_mods_db.get_chrm_id_or_insert(chrm, chrm_len)
pos_id = out_mods_db.get_pos_id_or_insert(chrm_id, strand, pos)
mod_base_id = out_mods_db.get_mod_base_id_or_insert(
mod_base, motif, motif_pos, raw_motif)
read_id = out_mods_db.get_read_id_or_insert(uuid)
out_mods_db.insert_data(score, pos_id, mod_base_id, read_id)
if out_mods_db.chrm_idx_in_mem:
out_mods_db.create_chrm_index()
if out_mods_db.pos_idx_in_mem:
out_mods_db.create_pos_index()
if out_mods_db.mod_idx_in_mem:
out_mods_db.create_mod_index()
out_mods_db.create_data_covering_index()
out_mods_db.close()
def _main(args):
logging.init_logger(quiet=args.quiet)
if (args.ground_truth_data is None
and args.control_megalodon_results_dir is None):
LOGGER.error(
"Must provide either --control-megalodon-results-dir or " +
"--ground-truth-data")
sys.exit()
db_fn = mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_NAME)
if args.ground_truth_data is not None:
LOGGER.info("Parsing ground truth data")
gt_mod_pos, gt_can_pos = mh.parse_ground_truth_file(
args.ground_truth_data, include_strand=args.strand_specific_sites)
LOGGER.info(
("Loaded ground truth data with {} modified sites and {} " +
"canonical sites.").format(len(gt_mod_pos), len(gt_can_pos)))
LOGGER.info("Reading ground truth modified base statistics from " +
"database.")
all_mod_llrs, all_can_llrs = mods.extract_stats_at_valid_sites(
db_fn,
[gt_mod_pos, gt_can_pos],
include_strand=args.strand_specific_sites,
)
else:
LOGGER.info("Reading ground truth modified base statistics from " +
"database")
all_mod_llrs = mods.extract_all_stats(db_fn)
LOGGER.info("Reading ground truth modified base statistics from " +
"canonical sample database")
all_can_llrs = mods.extract_all_stats(
mh.get_megalodon_fn(args.control_megalodon_results_dir,
mh.PR_MOD_NAME))
mod_summary = [(
mod,
len(all_mod_llrs[mod]) if mod in all_mod_llrs else 0,
len(all_can_llrs[mod]) if mod in all_can_llrs else 0,
) for mod in set(all_mod_llrs).union(all_can_llrs)]
LOGGER.info("Data summary:\n\tmod\tmod_N\tcan_N\n" +
"\n".join("\t" + "\t".join(map(str, x)) for x in mod_summary))
output_mods_data(
all_mod_llrs,
all_can_llrs,
args.modified_bases_set,
args.exclude_modified_bases,
args.out_filename,
)
def _get_bc_queue(bc_q, bc_conn, out_dir, bc_fmt, do_output_mods,
mod_long_names):
bc_fp = open(mh.get_megalodon_fn(out_dir, mh.BC_NAME) + '.' + bc_fmt, 'w')
if do_output_mods:
mods_fp = h5py.File(mh.get_megalodon_fn(out_dir, mh.BC_MODS_NAME))
mods_fp.create_group('Reads')
mods_fp.create_dataset('mod_long_names',
data=np.array(mod_long_names, dtype='S'),
dtype=h5py.special_dtype(vlen=str))
while True:
try:
# TODO add quality output to add fastq option
read_id, r_seq, mods_scores = bc_q.get(block=False)
bc_fp.write('>{}\n{}\n'.format(read_id, r_seq))
bc_fp.flush()
if do_output_mods:
try:
mods_fp.create_dataset('Reads/' + read_id,
data=mods_scores,
compression="gzip")
except RuntimeError:
# same read_id encountered previously
pass
except queue.Empty:
if bc_conn.poll():
break
sleep(0.1)
continue
while not bc_q.empty():
read_id, r_seq, mods_scores = bc_q.get(block=False)
bc_fp.write('>{}\n{}\n'.format(read_id, r_seq))
bc_fp.flush()
if do_output_mods:
try:
mods_fp.create_dataset('Reads/' + read_id,
data=mods_scores,
compression="gzip")
except RuntimeError:
# same read_id encountered previously
pass
bc_fp.close()
if do_output_mods:
mods_fp.close()
return
def _main(args):
mods_db = mods.ModsDb(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_NAME),
in_mem_dbid_to_uuid=True,
)
mods_txt_fp = open(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_TXT_NAME)
if args.out_filename is None else args.out_filename,
"w",
)
mods_txt_fp.write("\t".join(mods_db.text_field_names) + "\n")
rec_tmplt = "\t".join("{}" for _ in mods_db.text_field_names) + "\n"
bar = tqdm(
desc="Processing Per-read Data",
unit="per-read calls",
total=mods_db.get_num_uniq_stats(),
smoothing=0,
dynamic_ncols=True,
)
for (chrm, strand,
pos), pos_lps in mods_db.iter_pos_scores(convert_pos=True):
bar.update(len(pos_lps))
str_strand = mh.int_strand_to_str(strand)
mod_out_text = ""
prev_dbid = None
mod_bs, r_lps = [], []
for read_dbid, mod_dbid, lp in sorted(pos_lps):
if prev_dbid != read_dbid and prev_dbid is not None:
uuid = mods_db.get_uuid(prev_dbid)
# compute and store log likelihood ratios
with np.errstate(divide="ignore"):
can_lp = np.log1p(-np.exp(r_lps).sum())
for mod_b, r_lp in zip(mod_bs, r_lps):
mod_out_text += rec_tmplt.format(uuid, chrm, str_strand,
pos, r_lp, can_lp, mod_b)
mod_bs, r_lps = [], []
prev_dbid = read_dbid
mod_bs.append(mods_db.get_mod_base(mod_dbid))
r_lps.append(lp)
uuid = mods_db.get_uuid(prev_dbid)
# compute and store log likelihood ratios
with np.errstate(divide="ignore"):
can_lp = np.log1p(-np.exp(r_lps).sum())
for mod_b, r_lp in zip(mod_bs, r_lps):
mod_out_text += rec_tmplt.format(uuid, chrm, str_strand, pos, r_lp,
can_lp, mod_b)
mods_txt_fp.write(mod_out_text)
mods_txt_fp.close()
def _get_snp_stats_queue(snp_stats_q, snp_conn, out_dir, ref_names_and_lens,
out_suffix, write_vcf_lp):
agg_snp_fn = mh.get_megalodon_fn(out_dir, mh.SNP_NAME)
if out_suffix is not None:
base_fn, fn_ext = os.path.splitext(agg_snp_fn)
agg_snp_fn = base_fn + '.' + out_suffix + fn_ext
agg_snp_fp = snps.VcfWriter(agg_snp_fn,
'w',
ref_names_and_lens=ref_names_and_lens,
write_vcf_lp=write_vcf_lp)
while True:
try:
snp_var = snp_stats_q.get(block=False)
if snp_var is None: continue
agg_snp_fp.write_variant(snp_var)
except queue.Empty:
if snp_conn.poll():
break
sleep(0.001)
continue
while not snp_stats_q.empty():
snp_var = snp_stats_q.get(block=False)
agg_snp_fp.write_variant(snp_var)
agg_snp_fp.close()
return
def report_acc_metrics(res_dir, out_fp):
try:
bc_dat = pd.read_csv(mh.get_megalodon_fn(res_dir, mh.MAP_SUMM_NAME),
sep='\t')
bc_acc = bc_dat['pct_identity']
parsim_acc = 100 * (bc_dat['num_match'] - bc_dat['num_ins']) / \
(bc_dat['num_align'] - bc_dat['num_ins'])
mean_bc_acc = np.mean(bc_acc)
med_bc_acc = np.median(bc_acc)
# crude mode by rounding to 1 decimal
uniq_acc, acc_counts = np.unique(np.around(bc_acc, 1),
return_counts=True)
mode_bc_acc = uniq_acc[np.argmax(acc_counts)]
out_fp.write(
('Mapping metrics for {} ({} mapped reads):\n\t' +
'Mean Pct. Identity: {:.4f}\n\t' +
'Median Pct. Identity: {:.4f}\n\t' +
'Mode Pct. Identity: {:.1f}\n').format(res_dir,
bc_dat.shape[0],
mean_bc_acc, med_bc_acc,
mode_bc_acc))
except FileNotFoundError:
bc_acc = parsim_acc = None
if VERBOSE:
sys.stderr.write(
'WARNING: Mappings not found for {}\n'.format(res_dir))
return bc_acc, parsim_acc
def _main(args):
log_suffix = ('aggregation' if args.output_suffix is None else
'aggregation.' + args.output_suffix)
logging.init_logger(args.megalodon_directory, out_suffix=log_suffix)
LOGGER.debug('Command: """' + ' '.join(sys.argv) + '"""')
if args.mod_aggregate_method == mh.MOD_EM_NAME:
mod_agg_info = mods.AGG_INFO(mh.MOD_EM_NAME, None)
elif args.mod_aggregate_method == mh.MOD_BIN_THRESH_NAME:
mod_agg_info = mods.AGG_INFO(
mh.MOD_BIN_THRESH_NAME, args.mod_binary_threshold)
valid_read_ids = mh.parse_read_ids(args.read_ids_filename)
aggregate.aggregate_stats(
args.outputs, args.megalodon_directory, args.processes,
args.write_vcf_log_probs, args.heterozygous_factors,
variants.HAPLIOD_MODE if args.haploid else variants.DIPLOID_MODE,
mod_agg_info, args.write_mod_log_probs, args.mod_output_formats,
args.suppress_progress, valid_read_ids, args.output_suffix,
args.aggregate_batch_size)
if mh.VAR_NAME in args.outputs:
LOGGER.info('Sorting output variant file')
variant_fn = mh.add_fn_suffix(
mh.get_megalodon_fn(args.megalodon_directory, mh.VAR_NAME),
args.output_suffix)
sort_variant_fn = mh.add_fn_suffix(variant_fn, 'sorted')
variants.sort_variants(variant_fn, sort_variant_fn)
LOGGER.info('Indexing output variant file')
variants.index_variants(sort_variant_fn)
def report_acc_metrics(res_dir, out_fp, samp_lab):
try:
bc_data = mapping.parse_map_summary_file(
mh.get_megalodon_fn(res_dir, mh.MAP_SUMM_NAME))
bc_acc = np.array([r_data.pct_identity for r_data in bc_data])
parsim_acc = np.array([
100 * (r_data.num_match - r_data.num_ins) /
(r_data.num_align - r_data.num_ins) for r_data in bc_data
])
aligned_lens = np.array(
[r_data.num_align - r_data.num_ins for r_data in bc_data])
# crude mode by rounding to 1 decimal
uniq_acc, acc_counts = np.unique(np.around(bc_acc, 1),
return_counts=True)
mode_bc_acc = uniq_acc[np.argmax(acc_counts)]
out_fp.write(
ACC_METRICS_TMPLT.format(
np.median(bc_acc),
np.mean(bc_acc),
mode_bc_acc,
len(bc_data),
np.max(aligned_lens),
np.median(aligned_lens),
np.mean(aligned_lens),
samp_lab,
))
except FileNotFoundError:
bc_acc = parsim_acc = aligned_lens = None
LOGGER.info("Mappings not found for {}".format(res_dir))
return bc_acc, parsim_acc, aligned_lens
def _main(args):
logging.init_logger(log_fn=args.log_filename)
if args.ground_truth_cov_min < 1:
LOGGER.warning(
"--ground-truth-cov-min must be 1 or greater. " + "Setting to 1."
)
args.ground_truth_cov_min = 1
if args.nanopore_cov_min < 1:
LOGGER.warning(
"--nanopore-cov-min must be 1 or greater. " + "Setting to 1."
)
args.nanopore_cov_min = 1
LOGGER.info("Checking for consistent contig names")
mod_db_fn = mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_MOD_NAME)
check_matching_attrs(
args.ground_truth_bed, args.strand_offset, mod_db_fn, args.mod_bases
)
LOGGER.info("Processing batches")
process_all_batches(
args.processes,
args.batch_size,
args.ground_truth_bed,
args.out_low_coverage_sites,
args.out_per_site_mod_thresholds,
mod_db_fn,
args.strand_offset,
args.ground_truth_cov_min,
args.nanopore_cov_min,
args.mod_bases,
args.valid_sites,
)
def _get_var_stats_queue(var_stats_q, var_conn, out_dir, ref_names_and_lens,
out_suffix, write_vcf_lp):
agg_var_fn = mh.get_megalodon_fn(out_dir, mh.VAR_NAME)
if out_suffix is not None:
base_fn, fn_ext = os.path.splitext(agg_var_fn)
agg_var_fn = base_fn + '.' + out_suffix + fn_ext
agg_var_fp = variants.VcfWriter(agg_var_fn,
'w',
ref_names_and_lens=ref_names_and_lens,
write_vcf_lp=write_vcf_lp)
while True:
try:
var_var_batch = var_stats_q.get(block=True, timeout=0.01)
if var_var_batch is None:
continue
for var_var in var_var_batch:
agg_var_fp.write_variant(var_var)
except queue.Empty:
if var_conn.poll():
break
continue
while not var_stats_q.empty():
var_var_batch = var_stats_q.get(block=False)
for var_var in var_var_batch:
agg_var_fp.write_variant(var_var)
agg_var_fp.close()
def parse_control_mods(args, out_fp, all_valid_sites):
ctrl_acc = ctrl_parsim_acc = ctrl_dat = gt_dat = mod_chrm_sw = None
if args.control_megalodon_results_dir is not None:
if VERBOSE:
sys.stderr.write('Reading control mods data\n')
ctrl_acc, ctrl_parsim_acc = report_acc_metrics(
args.control_megalodon_results_dir, out_fp)
try:
ctrl_dat = pd.read_csv(
mh.get_megalodon_fn(args.control_megalodon_results_dir,
mh.PR_MOD_TXT_NAME), sep='\t')
if all_valid_sites is not None:
# filter to valid sites
ctrl_idx = ctrl_dat.set_index(['chrm', 'pos']).index
ctrl_dat = ctrl_dat[ctrl_idx.isin(all_valid_sites)]
except FileNotFoundError:
ctrl_dat = None
elif args.ground_truth_data is not None:
if VERBOSE:
sys.stderr.write('Reading ground truth data\n')
gt_dat = pd.read_csv(
args.ground_truth_data, header=None,
names=['chrm', 'pos', 'is_mod'])
elif args.mod_chrms_startswith is not None:
mod_chrm_sw = args.mod_chrms_startswith
else:
sys.stderr.write(
'*' * 20 + ' WARNING: No modified base ground truth provided.\n')
return ctrl_acc, ctrl_parsim_acc, ctrl_dat, gt_dat, mod_chrm_sw
def _main(args):
mh.mkdir(args.output_megalodon_results_dir, args.overwrite)
logging.init_logger(args.output_megalodon_results_dir)
logger = logging.get_logger()
logger.info('Opening new sequence variant statistics database')
out_vars_db = variants.VarsDb(
mh.get_megalodon_fn(args.output_megalodon_results_dir, mh.PR_VAR_NAME),
read_only=False,
loc_index_in_memory=not args.var_locations_on_disk,
uuid_index_in_memory=True)
for mega_dir in args.megalodon_results_dirs:
logger.info(
'Adding sequence variant statistics from {}'.format(mega_dir))
# full read only mode with no indices read into memory
vars_db = variants.VarsDb(mh.get_megalodon_fn(mega_dir,
mh.PR_VAR_NAME),
read_only=True,
chrm_index_in_memory=False,
alt_index_in_memory=False,
uuid_index_in_memory=False)
bar = tqdm(desc=mega_dir,
total=vars_db.get_num_uniq_stats(),
smoothing=0,
dynamic_ncols=True)
for (score, uuid, strand, alt_seq, ref_seq, pos, var_name, test_end,
test_start, chrm, chrm_len) in vars_db.iter_data():
chrm_id = out_vars_db.get_chrm_id_or_insert(chrm, chrm_len)
loc_id = out_vars_db.get_loc_id_or_insert(chrm_id, test_start,
test_end, pos, ref_seq,
var_name)
alt_id = out_vars_db.get_alt_id_or_insert(alt_seq)
read_id = out_vars_db.get_read_id_or_insert(uuid)
out_vars_db.insert_data(score, loc_id, alt_id, read_id)
bar.update()
bar.close()
logger.info('Creating indices and closing database')
if out_vars_db.chrm_idx_in_mem:
out_vars_db.create_chrm_index()
if out_vars_db.loc_idx_in_mem:
out_vars_db.create_loc_index()
if out_vars_db.alt_idx_in_mem:
out_vars_db.create_alt_index()
out_vars_db.create_data_covering_index()
out_vars_db.close()
def _main(args):
mh.mkdir(args.output_megalodon_results_dir, args.overwrite)
logging.init_logger(args.output_megalodon_results_dir)
LOGGER.info('Opening new modified base statistics database')
out_mods_db_fn = mh.get_megalodon_fn(args.output_megalodon_results_dir,
mh.PR_MOD_NAME)
out_mods_db = mods.ModsDb(
out_mods_db_fn, read_only=False, init_db_tables=True,
in_mem_chrm_to_dbid=True, in_mem_mod_to_dbid=True,
in_mem_uuid_to_dbid=True, in_mem_pos_to_dbid=True,
force_uint32_pos_to_dbid=args.force_uint32_pos_index,
db_safety=args.database_safety)
in_mod_db_fns = [mh.get_megalodon_fn(mega_dir, mh.PR_MOD_NAME)
for mega_dir in args.megalodon_results_dirs]
LOGGER.info(
'Merging will proceed in five stages:\n\t1) chrmosomes\n\t2) ' +
'modified base definitions\n\t3) read identifiers\n\t4) reference ' +
'positions\n\t5) modified base statistics')
insert_chrms(in_mod_db_fns, out_mods_db)
insert_mods(in_mod_db_fns, out_mods_db)
if args.single_process:
insert_reads(in_mod_db_fns, out_mods_db)
else:
insert_reads_mp(in_mod_db_fns, out_mods_db, args.data_batch_size)
if args.single_process:
insert_pos(in_mod_db_fns, out_mods_db, args.data_batch_size)
else:
insert_pos_mp(in_mod_db_fns, out_mods_db, args.data_batch_size)
out_mods_db.db.commit()
if args.single_process:
insert_data(in_mod_db_fns, out_mods_db, args.data_batch_size)
else:
insert_data_mp(
in_mod_db_fns, out_mods_db, out_mods_db_fn, args.data_batch_size,
args.max_processes, args.force_uint32_pos_index,
db_safety=args.database_safety)
out_mods_db.db.commit()
LOGGER.info(
'Creating data covering index for efficient searching by position')
out_mods_db.create_data_covering_index()
out_mods_db.db.commit()
out_mods_db.close()
def _main(args):
vars_db = variants.VarsDb(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_VAR_NAME),
uuid_strand_index_in_memory=True,
)
vars_txt_fp = open(
mh.get_megalodon_fn(args.megalodon_results_dir, mh.PR_VAR_TXT_NAME)
if args.out_filename is None else args.out_filename,
"w",
)
vars_txt_fp.write("\t".join(vars_db.text_field_names) + "\n")
for (loc_id, loc_chrm, pos, ref_seq, var_name,
test_start) in tqdm(vars_db.iter_locs(),
total=vars_db.get_num_uniq_var_loc(),
smoothing=0):
pr_var_stats = vars_db.get_loc_stats(
(loc_id, loc_chrm, pos, ref_seq, var_name, test_start))
alt_type_stats = defaultdict(dict)
for r_stats in pr_var_stats:
alt_type_stats[r_stats.read_id][r_stats.alt_seq] = (
r_stats.score,
r_stats.chrm,
)
var_out_text = ""
for read_id, r_var_stats in alt_type_stats.items():
uuid, strand = vars_db.get_uuid_strand(read_id)
alt_lps = np.array(list(zip(*r_var_stats.values()))[0])
with np.errstate(divide="ignore"):
ref_lp = np.log1p(-np.exp(alt_lps).sum())
var_out_text += ("\n".join(
(("\t".join("{}" for _ in vars_db.text_field_names)).format(
uuid,
chrm,
strand,
pos,
ref_lp,
alt_lp,
ref_seq,
alt_seq,
var_name,
) for alt_seq, (alt_lp, chrm) in r_var_stats.items())) + "\n")
vars_txt_fp.write(var_out_text)
return
def post_process_mapping(out_dir, map_fmt, ref_fn):
map_bn = mh.get_megalodon_fn(out_dir, mh.MAP_NAME)
map_fn = map_bn + '.' + map_fmt
map_sort_fn = map_bn + '.sorted.bam'
map_p = mp.Process(target=mapping.sort_and_index_mapping,
args=(map_fn, map_sort_fn, ref_fn),
daemon=True)
map_p.start()
sleep(0.01)
return map_p
def post_process_whatshap(out_dir, map_fmt, ref_fn):
whatshap_map_bn = mh.get_megalodon_fn(out_dir, mh.WHATSHAP_MAP_NAME)
whatshap_map_fn = whatshap_map_bn + '.' + map_fmt
whatshap_sort_fn = whatshap_map_bn + '.sorted.bam'
whatshap_p = mp.Process(target=mapping.sort_and_index_mapping,
args=(whatshap_map_fn, whatshap_sort_fn, ref_fn),
daemon=True)
whatshap_p.start()
sleep(0.01)
return whatshap_sort_fn, whatshap_p
def parse_mod_data(args):
if VERBOSE: sys.stderr.write('Reading megalodon data\n')
try:
mod_dat = pd.read_csv(mh.get_megalodon_fn(args.megalodon_results_dir,
mh.PR_MOD_TXT_NAME),
sep='\t')
except FileNotFoundError:
sys.write('ERROR: Must provide a valid Megalodon result directory.')
sys.exit(1)
return mod_dat
def write_signal_mappings(sig_map_q, sig_map_conn, ref_out_info, aux_failed_q):
def apply_sig_map_offset(read_mapping):
"""Apply signal mapping shift to center coarse mappings to a registered
signal based mapping.
"""
if (
ref_out_info.sig_map_offset is not None
and ref_out_info.sig_map_offset != 0
):
if ref_out_info.sig_map_offset > 0:
# clip beginning of signal mapping and end of reference to
# shift signal assignments to the left
read_mapping[0]["Ref_to_signal"] = read_mapping[0][
"Ref_to_signal"
][ref_out_info.sig_map_offset :]
read_mapping[0]["Reference"] = read_mapping[0]["Reference"][
: -ref_out_info.sig_map_offset
]
else:
# clip end of signal mapping and beginning of reference to
# shift signal assignments to the right
read_mapping[0]["Ref_to_signal"] = read_mapping[0][
"Ref_to_signal"
][: ref_out_info.sig_map_offset]
read_mapping[0]["Reference"] = read_mapping[0]["Reference"][
-ref_out_info.sig_map_offset :
]
return read_mapping
def iter_mappings():
workers_active = True
LOGGER.debug("GetterInitComplete")
while workers_active or not sig_map_q.empty():
try:
read_mapping = sig_map_q.get(timeout=0.1)
yield apply_sig_map_offset(read_mapping)
except queue.Empty:
if sig_map_conn.poll():
workers_active = False
try:
LOGGER.debug("GetterStarting")
prepare_mapping_funcs.generate_output_from_results(
iter_mappings(),
mh.get_megalodon_fn(ref_out_info.out_dir, mh.SIG_MAP_NAME),
ref_out_info.alphabet_info,
verbose=False,
)
LOGGER.debug("GetterClosing")
except Exception as e:
aux_failed_q.put(
("SigMapProcessingError", str(e), traceback.format_exc())
)
def open_alignment_out_file(out_dir, map_fmt, ref_names_and_lens, ref_fn):
map_fn = mh.get_megalodon_fn(out_dir, mh.MAP_NAME) + '.' + map_fmt
if map_fmt == 'bam': w_mode = 'wb'
elif map_fmt == 'cram': w_mode = 'wc'
elif map_fmt == 'sam': w_mode = 'w'
else:
raise mh.MegaError('Invalid mapping output format')
return pysam.AlignmentFile(map_fn,
w_mode,
reference_names=ref_names_and_lens[0],
reference_lengths=ref_names_and_lens[1],
reference_filename=ref_fn)
def parse_mod_data(args, out_fp):
if VERBOSE: sys.stderr.write('Reading megalodon data\n')
mod_acc, parsim_acc = report_acc_metrics(args.megalodon_results_dir,
out_fp)
try:
mod_dat = pd.read_csv(mh.get_megalodon_fn(args.megalodon_results_dir,
mh.PR_MOD_TXT_NAME),
sep='\t')
except FileNotFoundError:
mod_dat = None
return mod_dat, mod_acc, parsim_acc
def _main(args):
logging.init_logger(args.megalodon_directory, out_suffix=args.output_suffix)
LOGGER.debug('Command: """' + " ".join(sys.argv) + '"""')
mods_db_fn = mh.get_megalodon_fn(args.megalodon_directory, mh.PR_MOD_NAME)
mods_db = mods.ModsDb(mods_db_fn, read_only=False)
try:
mods_db.check_data_covering_index_exists()
LOGGER.info("Modified bases database index already exists")
except mh.MegaError:
LOGGER.info("Creating modified bases database index")
mods_db.create_data_covering_index()
LOGGER.debug("Closing database")
mods_db.close()
def _get_mod_stats_queue(
mod_stats_q,
mod_conn,
out_dir,
mod_names,
ref_names_and_lens,
out_suffix,
write_mod_lp,
mod_output_fmts,
):
def get_mod_site():
# function for profiling purposes
return mod_stats_q.get(block=True, timeout=0.01)
agg_mod_bn = mh.get_megalodon_fn(out_dir, mh.MOD_NAME)
if out_suffix is not None:
agg_mod_bn += "." + out_suffix
agg_mod_fps = []
if mh.MOD_BEDMETHYL_NAME in mod_output_fmts:
agg_mod_fps.append(mods.ModBedMethylWriter(agg_mod_bn, mod_names, "w"))
if mh.MOD_VCF_NAME in mod_output_fmts:
agg_mod_fps.append(
mods.ModVcfWriter(
agg_mod_bn,
mod_names,
"w",
ref_names_and_lens=ref_names_and_lens,
write_mod_lp=write_mod_lp,
))
if mh.MOD_WIG_NAME in mod_output_fmts:
agg_mod_fps.append(mods.ModWigWriter(agg_mod_bn, mod_names, "w"))
while True:
try:
mod_sites_batch = get_mod_site()
for mod_site in mod_sites_batch:
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.write_mod_site(mod_site)
except queue.Empty:
if mod_conn.poll():
break
continue
while not mod_stats_q.empty():
mod_sites_batch = mod_stats_q.get(block=False)
for mod_site in mod_sites_batch:
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.write_mod_site(mod_site)
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.close()
def open_alignment_out_file(self):
map_fn = '{}.{}'.format(
mh.get_megalodon_fn(self.out_dir, mh.MAP_NAME), self.map_fmt)
w_mode = get_mapping_mode(self.map_fmt)
try:
align_file = pysam.AlignmentFile(
map_fn, w_mode, reference_names=self.ref_names_and_lens[0],
reference_lengths=self.ref_names_and_lens[1],
reference_filename=self.cram_ref_fn)
except ValueError:
LOGGER.error(
'Failed to open alignment file for writing.\n\t\tFor CRAM ' +
'output, if FASTA is compressed ensure it is with bgzip or ' +
'if --reference is a minimap2 index see --cram-reference.')
raise mh.MegaError('Reference loading error.')
return align_file
def _get_mod_stats_queue(mod_stats_q, mod_conn, out_dir, mod_names,
ref_names_and_lens, out_suffix, write_mod_lp,
mod_output_fmts):
def get_mod_site():
# function for profiling purposes
return mod_stats_q.get(block=False)
def do_sleep():
# function for profiling purposes
sleep(0.001)
return
agg_mod_bn = mh.get_megalodon_fn(out_dir, mh.MOD_NAME)
if out_suffix is not None:
agg_mod_bn += '.' + out_suffix
agg_mod_fps = []
if mh.MOD_BEDMETHYL_NAME in mod_output_fmts:
agg_mod_fps.append(mods.ModBedMethylWriter(agg_mod_bn, mod_names, 'w'))
if mh.MOD_VCF_NAME in mod_output_fmts:
agg_mod_fps.append(
mods.ModVcfWriter(agg_mod_bn,
mod_names,
'w',
ref_names_and_lens=ref_names_and_lens,
write_mod_lp=write_mod_lp))
if mh.MOD_WIG_NAME in mod_output_fmts:
agg_mod_fps.append(mods.ModWigWriter(agg_mod_bn, mod_names, 'w'))
while True:
try:
mod_site = get_mod_site()
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.write_mod_site(mod_site)
except queue.Empty:
if mod_conn.poll():
break
do_sleep()
continue
while not mod_stats_q.empty():
mod_site = mod_stats_q.get(block=False)
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.write_mod_site(mod_site)
for agg_mod_fp in agg_mod_fps:
agg_mod_fp.close()
return
def _main(args):
mh.mkdir(args.output_megalodon_results_dir, args.overwrite)
logging.init_logger(args.output_megalodon_results_dir)
LOGGER.info('Extracting mods and chrms from input databases')
in_mod_db_fns = [
mh.get_megalodon_fn(mega_dir, mh.PR_MOD_NAME)
for mega_dir in args.megalodon_results_dirs
]
alphabet, mod_long_names = extract_mods(in_mod_db_fns)
ref_names_and_lens = extract_chrms(in_mod_db_fns)
LOGGER.info('Opening new per-read modified base statistics database')
model_info = backends.DetachedModelInfo(alphabet=alphabet,
mod_long_names=mod_long_names)
mods_info = mods.ModInfo(model_info,
out_dir=args.output_megalodon_results_dir)
mods.init_mods_db(mods_info, ref_names_and_lens)
# load uuids in memory in main out db only in single process mode.
# else worker threads only have to load uuid lookup tables
out_mods_db = mods.ModsDb(mods_info.mods_db_fn,
read_only=False,
in_mem_uuid_to_dbid=args.single_process)
LOGGER.info('Inserting read UUIDs from input databases')
if args.single_process:
insert_reads(in_mod_db_fns, out_mods_db)
else:
insert_reads_mp(in_mod_db_fns, out_mods_db)
# commit so read uuids are available to worker processes
out_mods_db.commit()
LOGGER.info('Inserting per-read calls from input databases')
if args.single_process:
insert_data(in_mod_db_fns, out_mods_db, args.data_batch_size)
else:
insert_data_mp(in_mod_db_fns, out_mods_db, mods_info.mods_db_fn,
args.data_batch_size, args.max_processes)
out_mods_db.commit()
LOGGER.info(
'Creating data covering index for efficient iteration by position')
out_mods_db.create_data_covering_index()
out_mods_db.commit()
out_mods_db.close()
def _main(args):
raise NotImplementedError(
'Variant index creation not currently implemented.')
logging.init_logger(args.megalodon_directory,
out_suffix=args.output_suffix)
LOGGER.debug('Command: """' + ' '.join(sys.argv) + '"""')
vars_db_fn = mh.get_megalodon_fn(args.megalodon_directory, mh.PR_VAR_NAME)
vars_db = variants.VarsDb(vars_db_fn, read_only=False)
try:
vars_db.check_data_covering_index_exists()
LOGGER.info('Variants database index already exists')
except mh.MegaError:
LOGGER.info('Creating variants database index')
vars_db.create_data_covering_index()
LOGGER.debug('Closing database')
vars_db.close()
def _main(args):
logging.init_logger(args.megalodon_directory,
out_suffix=args.output_suffix)
# parse motifs
motifs = parse_motifs(args.motif)
# open indexed FASTA reference
ref = pysam.FastaFile(args.reference)
LOGGER.info('Extracting mods and chrms from input database')
in_mods_db = mods.ModsDb(
mh.get_megalodon_fn(args.megalodon_directory, mh.PR_MOD_NAME))
alphabet, _, mod_long_names = in_mods_db.get_alphabet_info()
ref_names_and_lens = list(zip(*in_mods_db.iter_chrms()))[1:]
LOGGER.info('Extracting read uuid table')
in_uuids = [uuid for _, uuid in in_mods_db.iter_uuids()]
LOGGER.info('Opening new per-read modified base statistics databases')
model_info = backends.DetachedModelInfo(alphabet=alphabet,
mod_long_names=mod_long_names)
out_mods_dbs = []
for motif_info in motifs:
out_dir = '{}.{}_{}'.format(args.output_prefix, motif_info.raw_motif,
motif_info.bases_before)
mh.mkdir(out_dir, overwrite=False)
mods_info = mods.ModInfo(model_info, out_dir=out_dir)
mods.init_mods_db(mods_info, ref_names_and_lens)
out_mods_dbs.append((mods.ModsDb(mods_info.mods_db_fn,
read_only=False), motif_info))
out_mods_dbs[-1][0].insert_uuids(in_uuids)
out_mods_dbs[-1][0].commit()
# commit so read uuids are available to worker processes
LOGGER.info('Inserting per-read calls from input databases')
split_data(in_mods_db, out_mods_dbs, ref)
# TOOD do this in separate processes
LOGGER.info(
'Creating data covering indices for efficient iteration by position')
for out_mods_db, _ in out_mods_dbs:
out_mods_db.create_data_covering_index()
out_mods_db.commit()
out_mods_db.close()
LOGGER.info('Finished indexing {}'.format(out_mods_db.fn))