def main():
p = argparse.ArgumentParser()
p.add_argument('lca_filename')
p.add_argument('-k', '--ksize-list', default="31", type=str)
p.add_argument('-o', '--output', type=argparse.FileType('wt'))
args = p.parse_args()
lca_db = lca_json.LCA_Database(args.lca_filename)
ksizes = list(map(int, args.ksize_list.split(',')))
ksize_to_rank_counts = dict()
for ksize in ksizes:
#assert ksize not in ksize_to_rank_counts
taxfoo, hashval_to_lca, scaled = lca_db.get_database(ksize, None)
rank_counts = summarize_lca_db(taxfoo, hashval_to_lca)
ksize_to_rank_counts[ksize] = rank_counts
# this should be enforced by summarize_lca_db(...)
all_ranks = set()
for rank_counts in ksize_to_rank_counts.values():
all_ranks.update(rank_counts.keys())
assert all_ranks - set(want_taxonomy) == set()
if args.output:
w = csv.writer(args.output)
else:
w = csv.writer(sys.stdout)
w.writerow(['rank'] + ksizes)
for rank in want_taxonomy:
count_list = [rank]
for ksize in ksizes:
rank_counts = ksize_to_rank_counts[ksize]
count = rank_counts.get(rank, 0)
count_list.append(str(count))
w.writerow(count_list)
def main():
p = argparse.ArgumentParser()
p.add_argument('lca_db')
p.add_argument('csv')
p.add_argument('outcsv')
args = p.parse_args()
lca_db = lca_json.LCA_Database(args.lca_db)
taxfoo = lca_db.get_taxonomy()
r = csv.reader(open(args.csv, 'rt', encoding='utf8'))
next(r)
results = []
n = 0
for row in r:
n += 1
last_rank = None
last_name = None
genome_name, row = row[0], row[1:]
for rank, name in zip(want_taxonomy, row):
if name == 'null' or name.startswith('novel'):
break
last_rank, last_name = rank, name
taxid = get_taxids_for_name(taxfoo, **{last_rank: last_name})
if taxid == -1:
taxid = 1
lineage = taxfoo.get_lineage(taxid, want_taxonomy)
results.append((genome_name, str(taxid), ";".join(lineage)))
print(genome_name, taxid, ";".join(lineage))
with open(args.outcsv, 'wt', encoding='utf8') as outfp:
w = csv.writer(outfp)
for name, taxid, lineage in results:
w.writerow([name, taxid, lineage])
def main():
p = argparse.ArgumentParser()
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('dir')
args = p.parse_args()
# load all the LCA JSON files
lca_db_list = []
for lca_filename in LCA_DBs:
lca_db = lca_json.LCA_Database(lca_filename)
taxfoo, hashval_to_lca, _ = lca_db.get_database(args.ksize, SCALED)
lca_db_list.append((taxfoo, hashval_to_lca))
print('loading all signatures:', args.dir)
sigdict = load_all_signatures(args.dir, args.ksize)
print('...loaded {} signatures at k={}'.format(len(sigdict), args.ksize))
###
disagree_at = collections.defaultdict(int)
n = 0
for name, sig in sigdict.items():
taxid_set = collections.defaultdict(int)
for hashval in sig.minhash.get_mins():
this_hashval_taxids = set()
for (_, hashval_to_lca) in lca_db_list:
hashval_lca = hashval_to_lca.get(hashval)
if hashval_lca is not None:
this_hashval_taxids.add(hashval_lca)
this_hashval_lca = taxfoo.find_lca(this_hashval_taxids)
taxid_set[this_hashval_lca] += 1
abundant_taxids = [k for k in taxid_set if taxid_set[k] >= THRESHOLD]
if not abundant_taxids:
continue
n += 1
ranks_found = collections.defaultdict(set)
for taxid in abundant_taxids:
d = taxfoo.get_lineage_as_dict(taxid)
for k, v in d.items():
ranks_found[k].add(v)
found_disagree = False
for rank in reversed(want_taxonomy):
if len(ranks_found[rank]) > 1:
disagree_at[rank] += 1
found_disagree = True
break
if found_disagree:
print('{} has multiple LCA at rank \'{}\': {}'.format(name,
rank,
", ".join(ranks_found[rank])))
print('for', args.dir, 'found', len(sigdict), 'signatures;')
print('out of {} that could be classified, {} disagree at some rank.'.format(n, sum(disagree_at.values())))
for rank in want_taxonomy:
if disagree_at.get(rank):
print('\t{}: {}'.format(rank, disagree_at.get(rank, 0)))
def main():
p = argparse.ArgumentParser()
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('--lca', nargs='+', default=LCA_DBs)
p.add_argument('sig')
p.add_argument('-o', '--output-csv')
p.add_argument('--threshold', type=int, default=THRESHOLD,
help="minimum number of times a taxid must be present to count")
p.add_argument('-X', '--output-unassigned', action='store_true')
args = p.parse_args()
if args.output_csv:
output_filename = args.output_csv
else:
output_filename = os.path.basename(args.sig) + '.taxonomy.csv'
# load the LCA databases from the JSON file(s)
lca_db_list = []
for lca_filename in args.lca:
print('loading LCA database from {}'.format(lca_filename))
lca_db = lca_json.LCA_Database(lca_filename)
taxfoo, hashval_to_lca, _ = lca_db.get_database(args.ksize, SCALED)
lca_db_list.append((taxfoo, hashval_to_lca))
# load signature
sig = sourmash_lib.signature.load_one_signature(args.sig,
ksize=args.ksize)
hashes = sig.minhash.get_mins()
# open output file.
outfp = open(output_filename, 'wt')
outw = csv.writer(outfp)
outw.writerow(['hash', 'taxid', 'status', 'rank_info', 'lineage'])
###
# track number of classifications at various rank levels
classified_at = collections.defaultdict(int)
# also track unassigned
unassigned = set()
# for each hash in the minhash signature, get its LCA.
n_in_lca = 0
taxid_counts = collections.defaultdict(int)
lca_to_hashvals = collections.defaultdict(set)
for hashval in hashes:
# if a k-mer is present in multiple DBs, pull the
# least-common-ancestor taxonomic node across all of the
# DBs.
this_hashval_taxids = set()
for (_, hashval_to_lca) in lca_db_list:
hashval_lca = hashval_to_lca.get(hashval)
if hashval_lca is not None and hashval_lca != 1:
this_hashval_taxids.add(hashval_lca)
if this_hashval_taxids:
this_hashval_lca = taxfoo.find_lca(this_hashval_taxids)
if this_hashval_lca != None:
taxid_counts[this_hashval_lca] += 1
lca_to_hashvals[this_hashval_lca].add(hashval)
else:
unassigned.add(hashval)
# filter on given threshold - only taxids that show up in this
# signature more than THRESHOLD.
abundant_taxids = set([k for (k, cnt) in taxid_counts.items() \
if cnt >= args.threshold])
# remove root (taxid == 1) if it's in there:
if 1 in abundant_taxids:
abundant_taxids.remove(1)
# now, output hashval classifications.
n_classified = 0
for lca_taxid in abundant_taxids:
for hashval in lca_to_hashvals[lca_taxid]:
status = 'match'
status_rank = taxfoo.get_taxid_rank(lca_taxid)
lineage = taxfoo.get_lineage(lca_taxid,
want_taxonomy=want_taxonomy)
lineage = ";".join(lineage)
classified_at[status_rank] += 1
n_classified += 1
outw.writerow([str(hashval), str(lca_taxid),
status, status_rank, lineage])
# output unassigned?
if args.output_unassigned:
for hashval in unassigned:
status = 'nomatch'
status_rank = 'unknown'
lineage = 'UNKNOWN'
outw.writerow([str(hashval), str(lca_taxid),
status, status_rank, lineage])
print('')
print('classified sourmash signature \'{}\''.format(args.sig))
print('LCA databases used: {}'.format(', '.join(args.lca)))
print('')
print('total hash values: {}'.format(len(hashes)))
print('num classified: {}'.format(n_classified))
n_rare_taxids = sum([cnt for (k, cnt) in taxid_counts.items() \
if cnt < args.threshold ])
print('n rare taxids not used: {}'.format(n_rare_taxids))
print('unclassified: {}'.format(len(unassigned)))
print('')
print('number classified unambiguously, by lowest classification rank:')
for rank in want_taxonomy:
if classified_at.get(rank):
print('\t{}: {}'.format(rank, classified_at.get(rank, 0)))
print('')
print('classification output as CSV, here: {}'.format(output_filename))
def main():
p = argparse.ArgumentParser()
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('lca')
p.add_argument('revindex')
p.add_argument('accessions_csv')
args = p.parse_args()
# load the LCA databases from the JSON file(s)
print('loading LCA database from {}'.format(args.lca))
lca_db = lca_json.LCA_Database(args.lca)
taxfoo, hashval_to_lca, _ = lca_db.get_database(args.ksize, SCALED)
print('loading revindex:', args.revindex)
revidx = HashvalRevindex(args.revindex)
print('...loaded.')
# load classification CSV
print('loading classifications:', args.accessions_csv)
taxfoo.load_accessions_csv(args.accessions_csv)
print('...loaded.')
###
# track number of classifications at various rank levels
classified_at = collections.defaultdict(int)
classified_samples = collections.defaultdict(int)
hashval_troubles = collections.defaultdict(set)
for hashval, lca in hashval_to_lca.items():
rank = taxfoo.get_taxid_rank(lca)
classified_at[rank] += 1
if rank == 'superkingdom' and 0:
n_sigids = len(revidx.hashval_to_sigids[hashval])
classified_samples[n_sigids] += 1
if n_sigids >= 4:
for sigid in revidx.hashval_to_sigids[hashval]:
siginfo = revidx.sigid_to_siginfo[sigid]
hashval_troubles[hashval].add(siginfo)
for hashval, siginfo_set in hashval_troubles.items():
break
print('getting {} sigs for {}'.format(len(siginfo_set), hashval))
siglist = []
for (filename, md5) in siginfo_set:
sig = revindex_utils.get_sourmash_signature(filename, md5)
siglist.append(sig)
for sig in siglist:
acc = sig.name().split()[0]
taxid = taxfoo.get_taxid(acc)
if taxid:
print('\t', ";".join(taxfoo.get_lineage(taxid)),
taxfoo.get_taxid_rank(taxid))
print('')
for rank in want_taxonomy:
if classified_at.get(rank):
print('\t{}: {}'.format(rank, classified_at.get(rank, 0)))
print(classified_samples)
def main():
p = argparse.ArgumentParser()
p.add_argument('lca_output')
p.add_argument('genbank_csv')
p.add_argument('nodes_dmp')
p.add_argument('sigs', nargs='+')
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('--scaled', default=10000, type=int)
p.add_argument('--traverse-directory', action='store_true')
p.add_argument('-s', '--save-hashvals', action='store_true')
p.add_argument('-l', '--load-hashvals', action='store_true')
p.add_argument('--lca-json')
p.add_argument('--names-dmp', default='')
args = p.parse_args()
taxfoo = NCBI_TaxonomyFoo()
# load the accessions->taxid info
taxfoo.load_accessions_csv(args.genbank_csv)
# load the nodes_dmp file to get the tax tree
print('loading nodes_dmp / taxonomic tree')
taxfoo.load_nodes_dmp(args.nodes_dmp)
# track hashval -> set of taxids
hashval_to_taxids = defaultdict(set)
# for every minhash in every signature, link it to its NCBI taxonomic ID.
if args.traverse_directory:
inp_files = list(traverse_find_sigs(args.sigs))
else:
inp_files = list(args.sigs)
if args.load_hashvals:
with open(args.lca_output + '.hashvals', 'rb') as hashval_fp:
print('loading hashvals dict per -l/--load-hashvals...')
hashval_to_taxids = load(hashval_fp)
print('loaded {} hashvals'.format(len(hashval_to_taxids)))
else:
print('loading signatures & traversing hashes')
bad_input = 0
for n, filename in enumerate(inp_files):
if n % 100 == 0:
print('... loading file #', n, 'of', len(inp_files), end='\r')
try:
sig = sourmash_lib.signature.load_one_signature(
filename, ksize=args.ksize)
except (FileNotFoundError, ValueError):
if not args.traverse_directory:
raise
bad_input += 1
continue
acc = sig.name().split(' ')[0] # first part of sequence name
acc = acc.split('.')[0] # get acc w/o version
taxid = taxfoo.get_taxid(acc)
if taxid == None:
continue
sig.minhash = sig.minhash.downsample_scaled(args.scaled)
mins = sig.minhash.get_mins()
for m in mins:
hashval_to_taxids[m].add(taxid)
print('\n...done')
if bad_input:
print('failed to load {} of {} files found'.format(
bad_input, len(inp_files)))
if args.save_hashvals:
with open(args.lca_output + '.hashvals', 'wb') as hashval_fp:
dump(hashval_to_taxids, hashval_fp)
####
print(
'traversing tags and finding last-common-ancestor for {} tags'.format(
len(hashval_to_taxids)))
hashval_to_lca = {}
found_root = 0
empty_set = 0
# find the LCA for each hashval and store.
for n, (hashval, taxid_set) in enumerate(hashval_to_taxids.items()):
if n % 10000 == 0:
print('...', n, end='\r')
# find associated least-common-ancestors.
lca = taxfoo.find_lca(taxid_set)
if lca == 1:
if taxid_set:
found_root += 1
else:
empty_set += 1
continue
# save!!
hashval_to_lca[hashval] = lca
print('\ndone')
if found_root:
print('found root {} times'.format(found_root))
if empty_set:
print('found empty set {} times'.format(empty_set))
print('saving to', args.lca_output)
with lca_json.xopen(args.lca_output, 'wb') as lca_fp:
dump(hashval_to_lca, lca_fp)
# update LCA DB JSON file if provided
if args.lca_json:
lca_db = lca_json.LCA_Database()
if os.path.exists(args.lca_json):
print('loading LCA JSON file:', args.lca_json)
lca_db.load(args.lca_json)
prefix = os.path.dirname(args.lca_json) + '/'
lca_output = args.lca_output
if lca_output.startswith(prefix):
lca_output = lca_output[len(prefix):]
nodes_dmp = args.nodes_dmp
if nodes_dmp.startswith(prefix):
nodes_dmp = nodes_dmp[len(prefix):]
names_dmp = args.names_dmp
if names_dmp:
if names_dmp.startswith(prefix):
names_dmp = names_dmp[len(prefix):]
else:
names_dmp = nodes_dmp.replace('nodes', 'names')
lca_db.add_db(args.ksize, args.scaled, lca_output, nodes_dmp,
names_dmp)
print('saving LCA JSON file:', args.lca_json)
lca_db.save(args.lca_json)
def main():
p = argparse.ArgumentParser()
p.add_argument('lca_filename')
p.add_argument('sigfiles', nargs='+')
p.add_argument('-k', '--ksize', default=31, type=int)
args = p.parse_args()
# load lca info
lca_db = lca_json.LCA_Database(args.lca_filename)
taxfoo, hashval_to_lca, scaled = lca_db.get_database(args.ksize, SCALED)
# load signatures
siglist = []
print('loading signatures from {} signature files'.format(
len(args.sigfiles)))
for sigfile in args.sigfiles:
sigs = sourmash_lib.signature.load_signatures(sigfile,
ksize=args.ksize)
sigs = list(sigs)
siglist.extend(sigs)
print('loaded {} signatures total at k={}'.format(len(siglist),
args.ksize))
# downsample
print('downsampling to scaled value: {}'.format(scaled))
for sig in siglist:
if sig.minhash.scaled < scaled:
sig.minhash = sig.minhash.downsample_scaled(scaled)
# now, extract hash values!
hashvals = collections.defaultdict(int)
for sig in siglist:
for hashval in sig.minhash.get_mins():
hashvals[hashval] += 1
found = 0
total = 0
by_taxid = collections.defaultdict(int)
# for every hash, get LCA of labels
for hashval, count in hashvals.items():
lca = hashval_to_lca.get(hashval)
total += count
if lca is None:
by_taxid[0] += count
continue
by_taxid[lca] += count
found += count
print('found LCA classifications for', found, 'of', total, 'hashes')
not_found = total - found
# now, propogate counts up the taxonomic tree.
by_taxid_lca = collections.defaultdict(int)
for taxid, count in by_taxid.items():
by_taxid_lca[taxid] += count
parent = taxfoo.child_to_parent.get(taxid)
while parent != None and parent != 1:
by_taxid_lca[parent] += count
parent = taxfoo.child_to_parent.get(parent)
total_count = sum(by_taxid.values())
# sort by lineage length
x = []
for taxid, count in by_taxid_lca.items():
x.append((len(taxfoo.get_lineage(taxid)), taxid, count))
x.sort()
# ...aaaaaand output.
print('{}\t{}\t{}\t{}\t{}\t{}'.format('percent', 'below', 'at node',
'code', 'taxid', 'name'))
for _, taxid, count_below in x:
percent = round(100 * count_below / total_count, 2)
count_at = by_taxid[taxid]
rank = taxfoo.node_to_info.get(taxid)
if rank:
rank = rank[0]
classify_code = kraken_rank_code.get(rank, '-')
else:
classify_code = '-'
name = taxfoo.taxid_to_names.get(taxid)
if name:
name = name[0]
else:
name = '-'
print('{}\t{}\t{}\t{}\t{}\t{}'.format(percent, count_below, count_at,
classify_code, taxid, name))
if not_found:
classify_code = 'U'
percent = round(100 * not_found / total_count, 2)
count_below = not_found
count_at = not_found
taxid = 0
name = 'not classified'
print('{}\t{}\t{}\t{}\t{}\t{}'.format(percent, count_below, count_at,
classify_code, taxid, name))
def main():
p = argparse.ArgumentParser()
p.add_argument('csv')
p.add_argument('revindex')
p.add_argument('siglist', nargs='+')
p.add_argument('--lca', nargs='+', default=LCA_DBs)
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('-o', '--output', type=argparse.FileType('wt'),
help='output CSV to this file instead of stdout')
#p.add_argument('-v', '--verbose', action='store_true')
p.add_argument('-d', '--debug', action='store_true')
args = p.parse_args()
if args.debug:
global _print_debug
_print_debug = True
## load LCA databases
lca_db_list = []
for lca_filename in args.lca:
print('loading LCA database from {}'.format(lca_filename),
file=sys.stderr)
lca_db = lca_json.LCA_Database(lca_filename)
taxfoo, hashval_to_lca, _ = lca_db.get_database(args.ksize, SCALED)
lca_db_list.append((taxfoo, hashval_to_lca))
# reverse index names -> taxids
names_to_taxids = defaultdict(set)
for taxid, (name, _, _) in taxfoo.taxid_to_names.items():
names_to_taxids[name].add(taxid)
### parse spreadsheet
r = csv.reader(open(args.csv, 'rt'))
row_headers = ['identifier'] + taxlist
print('examining spreadsheet headers...', file=sys.stderr)
first_row = next(iter(r))
n_disagree = 0
for (column, value) in zip(row_headers, first_row):
if column.lower() != value.lower():
print('** assuming {} == {} in spreadsheet'.format(column, value),
file=sys.stderr)
n_disagree += 1
if n_disagree > 2:
print('whoa, too many assumptions. are the headers right?',
file=sys.stderr)
sys.exit(-1)
confusing_lineages = defaultdict(list)
incompatible_lineages = defaultdict(list)
assignments = {}
for row in r:
lineage = list(zip(row_headers, row))
ident = lineage[0][1]
lineage = lineage[1:]
# clean lineage of null names
lineage = [(a,b) for (a,b) in lineage if b not in null_names]
# ok, find the least-common-ancestor taxid...
taxid, rest = get_lca_taxid_for_lineage(taxfoo, names_to_taxids,
lineage)
# and find the *lowest* identifiable ancestor taxid, just to see
# if there are confusing lineages.
lowest_taxid, lowest_rest = \
get_lowest_taxid_for_lineage(taxfoo, names_to_taxids, lineage)
# do they match? if not, report.
if lowest_taxid != taxid:
lowest_lineage = taxfoo.get_lineage(lowest_taxid, taxlist)
lowest_str = ', '.join(lowest_lineage)
# find last matching, in case different classification levels.
match_lineage = [ b for (a, b) in lineage ]
end = match_lineage.index(lowest_lineage[-1])
assert end >= 0
match_lineage = match_lineage[:end + 1]
match_str = ', '.join(match_lineage)
confusing_lineages[(match_str, lowest_str)].append(ident)
# check! NCBI lineage should be lineage of taxid + rest
ncbi_lineage = taxfoo.get_lineage(taxid, taxlist)
assert len(ncbi_lineage)
reconstructed = ncbi_lineage + [ b for (a,b) in rest ]
# ...make a comparable lineage from the CSV line...
csv_lineage = [ b for (a, b) in lineage ]
# are NCBI-rooted and CSV lineages the same?? if not, report.
if csv_lineage != reconstructed:
csv_str = ", ".join(csv_lineage[:len(ncbi_lineage)])
ncbi_str = ", ".join(ncbi_lineage)
incompatible_lineages[(csv_str, ncbi_str)].append(ident)
# all is well if we've reached this point! We've got NCBI-rooted
# taxonomies and now we need to record. next:
#
# build a set of triples: (rank, name, taxid), where taxid can
# be None.
lineage_taxids = taxfoo.get_lineage_as_taxids(taxid)
tuples_info = []
for taxid in lineage_taxids:
name = taxfoo.get_taxid_name(taxid)
rank = taxfoo.get_taxid_rank(taxid)
if rank in taxlist:
tuples_info.append((rank, name))
for (rank, name) in rest:
assert rank in taxlist
tuples_info.append((rank, name))
assignments[ident] = tuples_info
print("{} weird lineages that maybe don't match with NCBI.".format(len(confusing_lineages) + len(incompatible_lineages)), file=sys.stderr)
## next phase: collapse lineages etc.
## load revindex
print('loading reverse index:', args.revindex, file=sys.stderr)
custom_bins_ri = revindex_utils.HashvalRevindex(args.revindex)
# load the signatures associated with each revindex.
print('loading signatures for custom genomes...', file=sys.stderr)
sigids_to_sig = {}
for sigid, (filename, md5) in custom_bins_ri.sigid_to_siginfo.items():
sig = revindex_utils.get_sourmash_signature(filename, md5)
if sig.name() in assignments:
sigids_to_sig[sigid] = sig
else:
debug('no assignment:', sig.name())
# figure out what ksize we're talking about here! (this should
# probably be stored on the revindex...)
random_db_sig = next(iter(sigids_to_sig.values()))
ksize = random_db_sig.minhash.ksize
print('...found {} custom genomes that also have assignments!!'.format(len(sigids_to_sig)), file=sys.stderr)
## now, connect the dots: hashvals to custom classifications
hashval_to_custom = defaultdict(list)
for hashval, sigids in custom_bins_ri.hashval_to_sigids.items():
for sigid in sigids:
sig = sigids_to_sig.get(sigid, None)
if sig:
assignment = assignments[sig.name()]
hashval_to_custom[hashval].append(assignment)
# whew! done!! we can now go from a hashval to a custom assignment!!
# for each query, gather all the matches in both custom and NCBI, then
# classify.
csvfp = csv.writer(sys.stdout)
if args.output:
print("outputting classifications to '{}'".format(args.output.name))
csvfp = csv.writer(args.output)
else:
print("outputting classifications to stdout")
csvfp.writerow(['ID'] + taxlist)
total_count = 0
for query_filename in args.siglist:
for query_sig in sourmash_lib.load_signatures(query_filename,
ksize=ksize):
print(u'\r\033[K', end=u'', file=sys.stderr)
print('... classifying {}'.format(query_sig.name()), end='\r',
file=sys.stderr)
debug('classifying', query_sig.name())
total_count += 1
these_assignments = defaultdict(list)
n_custom = 0
for hashval in query_sig.minhash.get_mins():
# custom
assignment = hashval_to_custom.get(hashval, [])
if assignment:
these_assignments[hashval].extend(assignment)
n_custom += 1
# NCBI
for (this_taxfoo, hashval_to_lca) in lca_db_list:
hashval_lca = hashval_to_lca.get(hashval)
if hashval_lca is not None and hashval_lca != 1:
lineage = this_taxfoo.get_lineage_as_dict(hashval_lca,
taxlist)
tuple_info = []
for rank in taxlist:
if rank not in lineage:
break
tuple_info.append((rank, lineage[rank]))
these_assignments[hashval_lca].append(tuple_info)
check_counts = Counter()
for tuple_info in these_assignments.values():
last_tup = tuple(tuple_info[-1])
check_counts[last_tup] += 1
debug('n custom hashvals:', n_custom)
debug(pprint.pformat(check_counts.most_common()))
# now convert to trees -> do LCA & counts
counts = Counter()
parents = {}
for hashval in these_assignments:
# for each list of tuple_info [(rank, name), ...] build
# a tree that lets us discover least-common-ancestor.
tuple_info = these_assignments[hashval]
tree = build_tree(tuple_info)
# also update a tree that we can ascend from leaves -> parents
# for all assignments for all hashvals
parents = build_reverse_tree(tuple_info, parents)
# now find either a leaf or the first node with multiple
# children; that's our least-common-ancestor node.
lca, reason = find_lca(tree)
counts[lca] += 1
# ok, we now have the LCAs for each hashval, and their number
# of counts. Now sum across "significant" LCAs - those above
# threshold.
tree = {}
tree_counts = defaultdict(int)
debug(pprint.pformat(counts.most_common()))
n = 0
for lca, count in counts.most_common():
if count < THRESHOLD:
break
n += 1
xx = []
parent = lca
while parent:
xx.insert(0, parent)
tree_counts[parent] += count
parent = parents.get(parent)
debug(n, count, xx[1:])
# update tree with this set of assignments
build_tree([xx], tree)
if n > 1:
debug('XXX', n)
# now find LCA? or whatever.
lca, reason = find_lca(tree)
if reason == 0: # leaf node
debug('END', lca)
else: # internal node
debug('MULTI', lca)
# backtrack to full lineage via parents
lineage = []
parent = lca
while parent != ('root', 'root'):
lineage.insert(0, parent)
parent = parents.get(parent)
# output!
row = [query_sig.name()]
for taxrank, (rank, name) in itertools.zip_longest(taxlist, lineage, fillvalue=('', '')):
if rank:
assert taxrank == rank
row.append(name)
csvfp.writerow(row)
print(u'\r\033[K', end=u'', file=sys.stderr)
print('classified {} signatures total'.format(total_count), file=sys.stderr)
def main():
p = argparse.ArgumentParser()
p.add_argument('-k', '--ksize', default=31, type=int)
p.add_argument('--lca', nargs='+', default=LCA_DBs)
p.add_argument('dir')
p.add_argument('-o', '--output-csv')
p.add_argument(
'--threshold',
type=int,
default=THRESHOLD,
help="minimum number of times a taxid must be present to count")
args = p.parse_args()
if args.output_csv:
output_filename = args.output_csv
else:
output_filename = os.path.basename(args.dir) + '.taxonomy.csv'
outfp = open(output_filename, 'wt')
outw = csv.writer(outfp)
outw.writerow(['name', 'taxid', 'status', 'rank_info', 'lineage'])
# load the LCA databases from the JSON file(s)
lca_db_list = []
for lca_filename in args.lca:
print('loading LCA database from {}'.format(lca_filename))
lca_db = lca_json.LCA_Database(lca_filename)
taxfoo, hashval_to_lca, _ = lca_db.get_database(args.ksize, SCALED)
lca_db_list.append((taxfoo, hashval_to_lca))
print('loading all signatures in directory:', args.dir)
sigdict = load_all_signatures(args.dir, args.ksize)
print('...loaded {} signatures at k={}'.format(len(sigdict), args.ksize))
###
# track number of classifications at various rank levels
classified_at = collections.defaultdict(int)
# track number of disagreements at various rank levels
disagree_at = collections.defaultdict(int)
# for each minhash signature in the directory,
n_in_lca = 0
for name, sig in sigdict.items():
# for each k-mer in each minhash signature, collect assigned taxids
# across all databases (& count).
taxid_set = collections.defaultdict(int)
for hashval in sig.minhash.get_mins():
# if a k-mer is present in multiple DBs, pull the
# least-common-ancestor taxonomic node across all of the
# DBs.
this_hashval_taxids = set()
for (_, hashval_to_lca) in lca_db_list:
hashval_lca = hashval_to_lca.get(hashval)
if hashval_lca is not None and hashval_lca != 1:
this_hashval_taxids.add(hashval_lca)
if this_hashval_taxids:
this_hashval_lca = taxfoo.find_lca(this_hashval_taxids)
if this_hashval_lca != None:
taxid_set[this_hashval_lca] += 1
# filter on given threshold - only taxids that show up in this
# signature more than THRESHOLD.
abundant_taxids = set([k for (k, cnt) in taxid_set.items() \
if cnt >= args.threshold])
# remove root (taxid == 1) if it's in there:
if 1 in abundant_taxids:
abundant_taxids.remove(1)
# default to nothing found. boo.
status = 'nomatch'
status_rank = ''
taxid = 0
# ok - out of the loop, got our LCAs, ...are there any left?
if abundant_taxids:
# increment number that are classifiable at *some* rank.
n_in_lca += 1
try:
disagree_below_rank, taxid_at_rank, disagree_taxids = \
taxfoo.get_lineage_first_disagreement(abundant_taxids,
want_taxonomy)
except ValueError:
# @CTB this is probably bad.
assert 0
continue
# we found a disagreement - report the rank *at* the disagreement,
# the lineage *above* the disagreement.
if disagree_below_rank:
# global record of disagreements
disagree_at[disagree_below_rank] += 1
list_at_rank = [
taxfoo.get_taxid_name(r) for r in disagree_taxids
]
list_at_rank = ", ".join(list_at_rank)
print('{} has multiple LCA below {}: \'{}\''.format(
name, disagree_below_rank, list_at_rank))
# set output
status = 'disagree'
status_rank = disagree_below_rank
taxid = taxid_at_rank
else:
# found unambiguous! yay.
status = 'found'
taxid = taxfoo.get_lowest_lineage(abundant_taxids,
want_taxonomy)
status_rank = taxfoo.get_taxid_rank(taxid)
status = 'found'
classified_at[status_rank] += 1
if taxid != 0:
lineage_found = taxfoo.get_lineage(taxid,
want_taxonomy=want_taxonomy)
lineage_found = ";".join(lineage_found)
else:
lineage_found = ""
outw.writerow([name, taxid, status, status_rank, lineage_found])
print('')
print('classified sourmash signatures in directory: \'{}\''.format(
args.dir))
print('LCA databases used: {}'.format(', '.join(args.lca)))
print('')
print('total signatures found: {}'.format(len(sigdict)))
print('no classification information: {}'.format(len(sigdict) - n_in_lca))
print('')
print('could classify {}'.format(n_in_lca))
print('of those, {} disagree at some rank.'.format(
sum(disagree_at.values())))
print('')
print('number classified unambiguously, by lowest classification rank:')
for rank in want_taxonomy:
if classified_at.get(rank):
print('\t{}: {}'.format(rank, classified_at.get(rank, 0)))
print('')
print('disagreements by rank:')
for rank in want_taxonomy:
if disagree_at.get(rank):
print('\t{}: {}'.format(rank, disagree_at.get(rank, 0)))
print('')
print('classification output as CSV, here: {}'.format(output_filename))
