def sbt_combine(args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import SigLeaf
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name to save SBT into')
parser.add_argument('sbts', nargs='+', help='SBTs to combine to a new SBT')
parser.add_argument('-x', '--bf-size', type=float, default=1e5)
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
moltype = sourmash_args.calculate_moltype(args)
inp_files = list(args.sbts)
notify('combining {} SBTs', len(inp_files))
tree = SBT.load(inp_files.pop(0), leaf_loader=SigLeaf.load)
for f in inp_files:
new_tree = SBT.load(f, leaf_loader=SigLeaf.load)
# TODO: check if parameters are the same for both trees!
tree.combine(new_tree)
notify('saving SBT under "{}".', args.sbt_name)
tree.save(args.sbt_name)
def test_sbt_fsstorage():
factory = GraphFactory(31, 1e5, 4)
with utils.TempDirectory() as location:
tree = SBT(factory)
for f in utils.SIG_FILES:
sig = next(signature.load_signatures(utils.get_test_data(f)))
leaf = SigLeaf(os.path.basename(f), sig)
tree.add_node(leaf)
to_search = leaf
print('*' * 60)
print("{}:".format(to_search.metadata))
old_result = {str(s) for s in tree.find(search_minhashes,
to_search.data, 0.1)}
print(*old_result, sep='\n')
with FSStorage(os.path.join(location, '.fstree')) as storage:
tree.save(os.path.join(location, 'tree'), storage=storage)
tree = SBT.load(os.path.join(location, 'tree'), leaf_loader=SigLeaf.load)
print('*' * 60)
print("{}:".format(to_search.metadata))
new_result = {str(s) for s in tree.find(search_minhashes,
to_search.data, 0.1)}
print(*new_result, sep='\n')
assert old_result == new_result
assert os.path.exists(os.path.join(location, tree.storage.path))
assert os.path.exists(os.path.join(location, '.fstree'))
def load_sbts_and_sigs(filenames, query_ksize, query_moltype):
databases = []
for sbt_or_sigfile in filenames:
try:
tree = SBT.load(sbt_or_sigfile, leaf_loader=SigLeaf.load)
ksize = get_ksize(tree)
if ksize != query_ksize:
error("ksize on tree '{}' is {};", sbt_or_sigfile, ksize)
error('this is different from query ksize of {}.', query_ksize)
sys.exit(-1)
databases.append((tree, sbt_or_sigfile, True))
notify('loaded SBT {}', sbt_or_sigfile)
except (ValueError, EnvironmentError):
# not an SBT - try as a .sig
try:
siglist = sig.load_signatures(sbt_or_sigfile,
select_ksize=query_ksize,
select_moltype=query_moltype)
siglist = list(siglist)
databases.append((list(siglist), sbt_or_sigfile, False))
notify('loaded {} signatures from {}', len(siglist),
sbt_or_sigfile)
except EnvironmentError:
error("file '{}' does not exist", sbt_or_sigfile)
sys.exit(-1)
return databases
def test_tree_save_load(n_children):
factory = GraphFactory(31, 1e5, 4)
tree = SBT(factory, d=n_children)
for f in utils.SIG_FILES:
sig = next(signature.load_signatures(utils.get_test_data(f)))
leaf = SigLeaf(os.path.basename(f), sig)
tree.add_node(leaf)
to_search = leaf
print('*' * 60)
print("{}:".format(to_search.metadata))
old_result = {
str(s)
for s in tree.find(search_minhashes, to_search.data, 0.1)
}
print(*old_result, sep='\n')
with utils.TempDirectory() as location:
tree.save(os.path.join(location, 'demo'))
tree = SBT.load(os.path.join(location, 'demo'),
leaf_loader=SigLeaf.load)
print('*' * 60)
print("{}:".format(to_search.metadata))
new_result = {
str(s)
for s in tree.find(search_minhashes, to_search.data, 0.1)
}
print(*new_result, sep='\n')
assert old_result == new_result
def test_tree_repair():
tree_repair = SBT.load(utils.get_test_data('leaves.sbt.json'),
leaf_loader=SigLeaf.load)
tree_cur = SBT.load(utils.get_test_data('v3.sbt.json'),
leaf_loader=SigLeaf.load)
testdata1 = utils.get_test_data(utils.SIG_FILES[0])
to_search = next(signature.load_signatures(testdata1))
results_repair = {str(s) for s in tree_repair.find(search_minhashes,
to_search, 0.1)}
results_cur = {str(s) for s in tree_cur.find(search_minhashes,
to_search, 0.1)}
assert results_repair == results_cur
assert len(results_repair) == 4
def load_sbts_and_sigs(filenames, query_ksize, query_moltype, traverse=False):
n_signatures = 0
n_databases = 0
databases = []
for sbt_or_sigfile in filenames:
if traverse and os.path.isdir(sbt_or_sigfile):
for sigfile in traverse_find_sigs([sbt_or_sigfile]):
try:
siglist = sig.load_signatures(sigfile,
ksize=query_ksize,
select_moltype=query_moltype)
siglist = list(siglist)
databases.append((list(siglist), sbt_or_sigfile, False))
notify('loaded {} signatures from {}',
len(siglist),
sigfile,
end='\r')
n_signatures += len(siglist)
except: # ignore errors with traverse
continue
continue
try:
tree = SBT.load(sbt_or_sigfile, leaf_loader=SigLeaf.load)
ksize = get_ksize(tree)
if ksize != query_ksize:
error("ksize on tree '{}' is {};", sbt_or_sigfile, ksize)
error('this is different from query ksize of {}.', query_ksize)
sys.exit(-1)
databases.append((tree, sbt_or_sigfile, True))
notify('loaded SBT {}', sbt_or_sigfile, end='\r')
n_databases += 1
except (ValueError, EnvironmentError):
# not an SBT - try as a .sig
try:
siglist = sig.load_signatures(sbt_or_sigfile,
ksize=query_ksize,
select_moltype=query_moltype)
siglist = list(siglist)
databases.append((list(siglist), sbt_or_sigfile, False))
notify('loaded {} signatures from {}',
len(siglist),
sbt_or_sigfile,
end='\r')
n_signatures += len(siglist)
except EnvironmentError:
error("\nfile '{}' does not exist", sbt_or_sigfile)
sys.exit(-1)
notify(' ' * 79, end='\r')
notify('loaded {} signatures and {} databases total.'.format(
n_signatures, n_databases))
if databases:
print('')
return databases
def test_tree_v1_load():
tree_v1 = SBT.load(utils.get_test_data('v1.sbt.json'),
leaf_loader=SigLeaf.load)
tree_v2 = SBT.load(utils.get_test_data('v2.sbt.json'),
leaf_loader=SigLeaf.load)
testdata1 = utils.get_test_data(utils.SIG_FILES[0])
to_search = next(signature.load_signatures(testdata1))
results_v1 = {
str(s)
for s in tree_v1.find(search_minhashes, to_search, 0.1)
}
results_v2 = {
str(s)
for s in tree_v2.find(search_minhashes, to_search, 0.1)
}
assert results_v1 == results_v2
assert len(results_v1) == 4
def test_tree_repair_add_node():
tree_repair = SBT.load(utils.get_test_data('leaves.sbt.json'),
leaf_loader=SigLeaf.load)
for f in utils.SIG_FILES:
sig = next(signature.load_signatures(utils.get_test_data(f)))
leaf = SigLeaf(os.path.basename(f), sig)
tree_repair.add_node(leaf)
for pos, node in list(tree_repair.nodes.items()):
# Every parent of a node must be an internal node (and not a leaf),
# except for node 0 (the root), whose parent is None.
if pos != 0:
assert isinstance(tree_repair.parent(pos).node, Node)
# Leaf nodes can't have children
if isinstance(node, Leaf):
assert all(c.node is None for c in tree_repair.children(pos))
def sbt_search(args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name of SBT to load')
parser.add_argument('query', help='signature to query')
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.08, type=float)
parser.add_argument('--save-matches', type=argparse.FileType('wt'))
parser.add_argument('--best-only', action='store_true')
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
moltype = sourmash_args.calculate_moltype(args)
search_fn = search_minhashes
if args.best_only:
search_fn = SearchMinHashesFindBest().search
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
query = sourmash_args.load_query_signature(args.query,
select_ksize=args.ksize,
select_moltype=moltype)
query_moltype = sourmash_args.get_moltype(query)
query_ksize = query.estimator.ksize
notify('loaded query: {}... (k={}, {})',
query.name()[:30], query_ksize, query_moltype)
results = []
for leaf in tree.find(search_fn, query, args.threshold):
results.append((query.similarity(leaf.data), leaf.data))
#results.append((leaf.data.similarity(ss), leaf.data))
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
for (similarity, query) in results:
print('{:.2f} {}'.format(similarity, query.name()))
if args.save_matches:
outname = args.save_matches.name
notify('saving all matches to "{}"', outname)
sig.save_signatures([m for (sim, m) in results], args.save_matches)
def test_save_sparseness(n_children):
factory = GraphFactory(31, 1e5, 4)
tree = SBT(factory, d=n_children)
for f in utils.SIG_FILES:
sig = next(signature.load_signatures(utils.get_test_data(f)))
leaf = SigLeaf(os.path.basename(f), sig)
tree.add_node(leaf)
to_search = leaf
print('*' * 60)
print("{}:".format(to_search.metadata))
old_result = {
str(s)
for s in tree.find(search_minhashes, to_search.data, 0.1)
}
print(*old_result, sep='\n')
with utils.TempDirectory() as location:
tree.save(os.path.join(location, 'demo'), sparseness=1.0)
tree_loaded = SBT.load(os.path.join(location, 'demo'),
leaf_loader=SigLeaf.load)
assert all(not isinstance(n, Node) for n in tree_loaded.nodes.values())
print('*' * 60)
print("{}:".format(to_search.metadata))
new_result = {
str(s)
for s in tree_loaded.find(search_minhashes, to_search.data, 0.1)
}
print(*new_result, sep='\n')
assert old_result == new_result
for pos, node in list(tree_loaded.nodes.items()):
# Every parent of a node must be an internal node (and not a leaf),
# except for node 0 (the root), whose parent is None.
if pos != 0:
assert isinstance(tree_loaded.parent(pos).node, Node)
# Leaf nodes can't have children
if isinstance(node, Leaf):
assert all(c.node is None for c in tree_loaded.children(pos))
def test_sbt_ipfsstorage():
ipfsapi = pytest.importorskip('ipfsapi')
factory = GraphFactory(31, 1e5, 4)
with utils.TempDirectory() as location:
tree = SBT(factory)
for f in utils.SIG_FILES:
sig = next(signature.load_signatures(utils.get_test_data(f)))
leaf = SigLeaf(os.path.basename(f), sig)
tree.add_node(leaf)
to_search = leaf
print('*' * 60)
print("{}:".format(to_search.metadata))
old_result = {
str(s)
for s in tree.find(search_minhashes, to_search.data, 0.1)
}
print(*old_result, sep='\n')
try:
with IPFSStorage() as storage:
tree.save(os.path.join(location, 'tree'), storage=storage)
except ipfsapi.exceptions.ConnectionError:
pytest.xfail("ipfs not installed/functioning probably")
with IPFSStorage() as storage:
tree = SBT.load(os.path.join(location, 'tree'),
leaf_loader=SigLeaf.load,
storage=storage)
print('*' * 60)
print("{}:".format(to_search.metadata))
new_result = {
str(s)
for s in tree.find(search_minhashes, to_search.data, 0.1)
}
print(*new_result, sep='\n')
assert old_result == new_result
def categorize(self, args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name')
parser.add_argument('queries', nargs='+')
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.08, type=float)
parser.add_argument('--traverse-directory', action="store_true")
sourmash_args.add_moltype_args(parser)
parser.add_argument('--csv', type=argparse.FileType('at'))
parser.add_argument('--load-csv', default=None)
args = parser.parse_args(args)
if args.protein:
if args.dna is True:
raise Exception('cannot specify both --dna and --protein!')
args.dna = False
moltype = None
if args.protein:
moltype = 'protein'
elif args.dna:
moltype = 'dna'
already_names = set()
if args.load_csv:
with open(args.load_csv, 'rt') as fp:
r = csv.reader(fp)
for row in r:
already_names.add(row[0])
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
if args.traverse_directory:
inp_files = []
for dirname in args.queries:
for root, dirs, files in os.walk(dirname):
for name in files:
if name.endswith('.sig'):
fullname = os.path.join(root, name)
if fullname not in already_names:
inp_files.append(fullname)
else:
inp_files = args.queries
print('found {} files to query'.format(len(inp_files)))
loader = sourmash_args.LoadSingleSignatures(inp_files,
args.ksize, moltype)
for queryfile, query, query_moltype, query_ksize in loader:
print('loaded query: {}... (k={}, {})'.format(query.name()[:30],
query_ksize,
query_moltype))
results = []
search_fn = SearchMinHashesFindBest().search
for leaf in tree.find(search_fn, query, args.threshold):
# ignore self
if leaf.data.md5sum() != query.md5sum():
results.append((query.similarity(leaf.data), leaf.data))
best_hit_sim = 0.0
best_hit_query_name = ""
if results:
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
best_hit_sim, best_hit_query = results[0]
print('for {}, found: {:.2f} {}'.format(query.name(),
best_hit_sim,
best_hit_query.name()))
best_hit_query_name = best_hit_query.name()
else:
print('for {}, no match found'.format(query.name()))
if args.csv:
w = csv.writer(args.csv)
w.writerow([queryfile, best_hit_query_name, best_hit_sim])
if loader.skipped_ignore:
print('skipped/ignore: {}'.format(loader.skipped_ignore))
if loader.skipped_nosig:
print('skipped/nosig: {}'.format(loader.skipped_nosig))
def load_sbts_and_sigs(filenames, query, is_similarity_query, traverse=False):
query_ksize = query.minhash.ksize
query_moltype = get_moltype(query)
n_signatures = 0
n_databases = 0
databases = []
for sbt_or_sigfile in filenames:
if traverse and os.path.isdir(sbt_or_sigfile):
for sigfile in traverse_find_sigs([sbt_or_sigfile]):
try:
siglist = sig.load_signatures(sigfile,
ksize=query_ksize,
select_moltype=query_moltype)
siglist = filter_compatible_signatures(query, siglist, 1)
siglist = list(siglist)
databases.append((siglist, sbt_or_sigfile, False))
notify('loaded {} signatures from {}',
len(siglist),
sigfile,
end='\r')
n_signatures += len(siglist)
except: # ignore errors with traverse
pass
# done! jump to beginning of main 'for' loop
continue
# no traverse? try loading as an SBT.
try:
tree = SBT.load(sbt_or_sigfile, leaf_loader=SigLeaf.load)
if not check_tree_is_compatible(sbt_or_sigfile, tree, query,
is_similarity_query):
sys.exit(-1)
databases.append((tree, sbt_or_sigfile, True))
notify('loaded SBT {}', sbt_or_sigfile, end='\r')
n_databases += 1
# done! jump to beginning of main 'for' loop
continue
except (ValueError, EnvironmentError):
# not an SBT - try as a .sig
pass
# not a tree? try loading as a signature.
try:
siglist = sig.load_signatures(sbt_or_sigfile,
ksize=query_ksize,
select_moltype=query_moltype)
siglist = list(siglist)
if len(siglist) == 0: # file not found, or parse error?
raise ValueError
siglist = filter_compatible_signatures(query, siglist, False)
siglist = list(siglist)
databases.append((siglist, sbt_or_sigfile, False))
notify('loaded {} signatures from {}',
len(siglist),
sbt_or_sigfile,
end='\r')
n_signatures += len(siglist)
except (EnvironmentError, ValueError):
error("\nCannot open file '{}'", sbt_or_sigfile)
sys.exit(-1)
notify(' ' * 79, end='\r')
if n_signatures and n_databases:
notify('loaded {} signatures and {} databases total.', n_signatures,
n_databases)
elif n_signatures:
notify('loaded {} signatures.', n_signatures)
elif n_databases:
notify('loaded {} databases.', n_databases)
else:
sys.exit(-1)
if databases:
print('')
return databases
def sbt_search(self, args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name')
parser.add_argument('query')
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.08, type=float)
parser.add_argument('--save-matches', type=argparse.FileType('wt'))
parser.add_argument('--best-only', action='store_true')
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
if args.protein:
if args.dna is True:
raise Exception('cannot specify both --dna and --protein!')
args.dna = False
moltype = None
if args.protein:
moltype = 'protein'
elif args.dna:
moltype = 'dna'
search_fn = search_minhashes
if args.best_only:
search_fn = SearchMinHashesFindBest().search
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
sl = sig.load_signatures(args.query, select_ksize=args.ksize,
select_moltype=moltype)
sl = list(sl)
if len(sl) != 1:
print('When loading query from "{}",'.format(args.query),
file=sys.stderr)
print('{} query signatures matching ksize and molecule type; need exactly one.'.format(len(sl)))
sys.exit(-1)
query = sl[0]
query_moltype = 'UNKNOWN'
if query.estimator.is_molecule_type('dna'):
query_moltype = 'DNA'
elif query.estimator.is_molecule_type('protein'):
query_moltype = 'protein'
query_ksize = query.estimator.ksize
print('loaded query: {}... (k={}, {})'.format(query.name()[:30],
query_ksize,
query_moltype))
results = []
for leaf in tree.find(search_fn, query, args.threshold):
results.append((query.similarity(leaf.data), leaf.data))
#results.append((leaf.data.similarity(ss), leaf.data))
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
for (similarity, query) in results:
print('{:.2f} {}'.format(similarity, query.name()))
if args.save_matches:
outname = args.save_matches.name
print('saving all matches to "{}"'.format(outname))
sig.save_signatures([ m for (sim, m) in results ],
args.save_matches)
def index(args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name to save SBT into')
parser.add_argument('signatures',
nargs='+',
help='signatures to load into SBT')
parser.add_argument('-q',
'--quiet',
action='store_true',
help='suppress non-error output')
parser.add_argument('-k',
'--ksize',
type=int,
default=None,
help='k-mer size for which to build the SBT.')
parser.add_argument('--traverse-directory',
action='store_true',
help='load all signatures underneath this directory.')
parser.add_argument('--append',
action='store_true',
default=False,
help='add signatures to an existing SBT.')
parser.add_argument('-x',
'--bf-size',
type=float,
default=1e5,
help='Bloom filter size used for internal nodes.')
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
set_quiet(args.quiet)
moltype = sourmash_args.calculate_moltype(args)
if args.append:
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
else:
factory = GraphFactory(1, args.bf_size, 4)
tree = SBT(factory)
if args.traverse_directory:
inp_files = list(sourmash_args.traverse_find_sigs(args.signatures))
else:
inp_files = list(args.signatures)
notify('loading {} files into SBT', len(inp_files))
n = 0
ksizes = set()
moltypes = set()
for f in inp_files:
siglist = sig.load_signatures(f,
select_ksize=args.ksize,
select_moltype=moltype)
# load all matching signatures in this file
for ss in siglist:
ksizes.add(ss.minhash.ksize)
moltypes.add(sourmash_args.get_moltype(ss))
leaf = SigLeaf(ss.md5sum(), ss)
tree.add_node(leaf)
n += 1
# check to make sure we aren't loading incompatible signatures
if len(ksizes) > 1 or len(moltypes) > 1:
error('multiple k-mer sizes or molecule types present; fail.')
error('specify --dna/--protein and --ksize as necessary')
error('ksizes: {}; moltypes: {}', ", ".join(map(str, ksizes)),
", ".join(moltypes))
sys.exit(-1)
# did we load any!?
if n == 0:
error('no signatures found to load into tree!? failing.')
sys.exit(-1)
notify('loaded {} sigs; saving SBT under "{}"', n, args.sbt_name)
tree.save(args.sbt_name)
def categorize(args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name of SBT to load')
parser.add_argument('queries',
nargs='+',
help='list of signatures to categorize')
parser.add_argument('-k', '--ksize', type=int, default=None)
parser.add_argument('--threshold', default=0.08, type=float)
parser.add_argument('--traverse-directory', action="store_true")
sourmash_args.add_moltype_args(parser)
parser.add_argument('--csv', type=argparse.FileType('at'))
parser.add_argument('--load-csv', default=None)
args = parser.parse_args(args)
moltype = sourmash_args.calculate_moltype(args)
already_names = set()
if args.load_csv:
with open(args.load_csv, 'rt') as fp:
r = csv.reader(fp)
for row in r:
already_names.add(row[0])
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
if args.traverse_directory:
inp_files = set(sourmash_args.traverse_find_sigs(args.queries))
else:
inp_files = set(args.queries) - already_names
inp_files = set(inp_files) - already_names
notify('found {} files to query', len(inp_files))
loader = sourmash_args.LoadSingleSignatures(inp_files, args.ksize, moltype)
for queryfile, query, query_moltype, query_ksize in loader:
notify('loaded query: {}... (k={}, {})',
query.name()[:30], query_ksize, query_moltype)
results = []
search_fn = SearchMinHashesFindBest().search
for leaf in tree.find(search_fn, query, args.threshold):
if leaf.data.md5sum() != query.md5sum(): # ignore self.
results.append((query.similarity(leaf.data), leaf.data))
best_hit_sim = 0.0
best_hit_query_name = ""
if results:
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
best_hit_sim, best_hit_query = results[0]
notify('for {}, found: {:.2f} {}', query.name(), best_hit_sim,
best_hit_query.name())
best_hit_query_name = best_hit_query.name()
else:
notify('for {}, no match found', query.name())
if args.csv:
w = csv.writer(args.csv)
w.writerow([queryfile, best_hit_query_name, best_hit_sim])
if loader.skipped_ignore:
notify('skipped/ignore: {}', loader.skipped_ignore)
if loader.skipped_nosig:
notify('skipped/nosig: {}', loader.skipped_nosig)
def sbt_gather(args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBestIgnoreMaxHash
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name of SBT to search')
parser.add_argument('query', help='query signature')
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.05, type=float)
parser.add_argument('-o', '--output', type=argparse.FileType('wt'))
parser.add_argument('--csv', type=argparse.FileType('wt'))
parser.add_argument('--save-matches', type=argparse.FileType('wt'))
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
moltype = sourmash_args.calculate_moltype(args)
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
query = sourmash_args.load_query_signature(args.query,
select_ksize=args.ksize,
select_moltype=moltype)
query_moltype = sourmash_args.get_moltype(query)
query_ksize = query.estimator.ksize
notify('loaded query: {}... (k={}, {})',
query.name()[:30], query_ksize, query_moltype)
if query.estimator.max_hash == 0:
error('query signature needs to be created with --scaled')
error('or using --with-cardinality.')
sys.exit(-1)
notify('query signature has max_hash: {}', query.estimator.max_hash)
orig_query = query
R_metagenome = 2**64 / float(orig_query.estimator.max_hash)
new_mins = query.estimator.get_hashes()
e = sourmash_lib.Estimators(ksize=args.ksize, n=len(new_mins))
e.update(query.estimator)
query = sig.SourmashSignature('', e)
sum_found = 0.
found = []
while 1:
search_fn = SearchMinHashesFindBestIgnoreMaxHash().search
results = []
# use super low threshold for this part of the search
for leaf in tree.find(search_fn, query, 0.00001):
results.append((query.estimator.similarity_ignore_maxhash(
leaf.data.estimator), leaf.data))
if not len(results): # no matches at all!
break
# take the best result
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
best_sim, best_ss = results[0]
# subtract found hashes from search hashes, construct new search
new_mins = set(query.estimator.get_hashes())
found_mins = best_ss.estimator.get_hashes()
if best_ss.estimator.max_hash:
R_genome = 2**64 / float(best_ss.estimator.max_hash)
elif best_ss.estimator.hll:
genome_size = best_ss.estimator.hll.estimate_cardinality()
genome_max_hash = max(found_mins)
R_genome = float(genome_size) / float(genome_max_hash)
else:
error('Best hash match in sbt_gather has no cardinality')
error('Please prepare database of sequences with --scaled')
error('...or with --with-cardinality')
sys.exit(-1)
R_comparison = max(R_metagenome, R_genome)
new_max_hash = 2**64 / float(R_comparison)
new_mins = set([i for i in new_mins if i < new_max_hash])
found_mins = set([i for i in found_mins if i < new_max_hash])
# intersection:
intersect_mins = new_mins.intersection(found_mins)
if len(intersect_mins) < 5: # hard cutoff for now
notify('found only {} hashes in common.', len(intersect_mins))
notify('this is below a sane threshold => exiting.')
break
# first denominator - genome size
genome_n_mins = len(found_mins)
f_genome = len(intersect_mins) / float(genome_n_mins)
# second denominator - metagenome size
query_n_mins = len(orig_query.estimator.get_hashes())
f_query = len(intersect_mins) / float(query_n_mins)
# print interim & save
notify('found: {:.2f} {:.2f} {}', f_genome, f_query, best_ss.name())
found.append((f_genome, best_ss))
new_mins -= set(found_mins)
e = sourmash_lib.Estimators(ksize=args.ksize, n=len(new_mins))
e.add_many(new_mins)
query = sig.SourmashSignature('', e)
notify('found {}, total fraction {:.3f}', len(found), sum_found)
notify('')
if not found:
sys.exit(0)
found.sort(key=lambda x: x[0])
found.reverse()
notify('Composition:')
for (frac, leaf_sketch) in found:
notify('{:.2f} {}', frac, leaf_sketch.name())
if args.output:
print('Composition:', file=args.output)
for (frac, leaf_sketch) in found:
print('{:.2f} {}'.format(frac, leaf_sketch.name()),
file=args.output)
if args.csv:
fieldnames = ['fraction', 'name', 'sketch_kmers']
w = csv.DictWriter(args.csv, fieldnames=fieldnames)
w.writeheader()
for (frac, leaf_sketch) in found:
cardinality = leaf_sketch.estimator.hll.estimate_cardinality()
w.writerow(
dict(fraction=frac,
name=leaf_sketch.name(),
sketch_kmers=cardinality))
if args.save_matches:
outname = args.save_matches.name
notify('saving all matches to "{}"', outname)
sig.save_signatures([ss for (f, ss) in found], args.save_matches)
def main():
p = argparse.ArgumentParser()
p.add_argument('dir1')
p.add_argument('sbt1')
p.add_argument('dir2')
p.add_argument('sbt2')
p.add_argument('-k', '--ksize', type=int, default=31)
args = p.parse_args()
print('loading all signatures:', args.dir1)
sigdict1 = load_all_signatures(args.dir1, args.ksize)
tree1 = SBT.load(args.sbt1, leaf_loader=SigLeaf.load)
print('...loaded {} signatures at k={}'.format(len(sigdict1), args.ksize))
print('loading all signatures:', args.dir2)
sigdict2 = load_all_signatures(args.dir2, args.ksize)
tree2 = SBT.load(args.sbt2, leaf_loader=SigLeaf.load)
print('...loaded {} signatures at k={}'.format(len(sigdict2), args.ksize))
# first, find all matches in 2 for 1, and 1 for 2
THRESHOLD = 0.05
matches_1_in_2 = make_all_matches(sigdict1, tree2, THRESHOLD)
matches_2_in_1 = make_all_matches(sigdict2, tree1, THRESHOLD)
# now, do containment
contained_1_in_2 = containment(matches_1_in_2, sigdict1, sigdict2)
contained_2_in_1 = containment(matches_2_in_1, sigdict2, sigdict1)
# summary stats
CONTAIN_THRESHOLD = 0.95
IDENT_THRESHOLD = 0.80
print('thresholds:')
print('min Jaccard similarity for any match:', THRESHOLD)
print('to score as identical, similarity must be >=', IDENT_THRESHOLD)
print('to score as contained, containment must be >=', CONTAIN_THRESHOLD)
# 1 in 2
c_ident = 0
c_match = 0
c_contain = 0
c_no_match = 0
c_no_contain = 0
identical_names = []
for query_name in sigdict1:
best_match = None
similarity = 0.0
cont = 0.0
if query_name in matches_1_in_2:
(best_match, similarity) = matches_1_in_2[query_name]
if query_name in contained_1_in_2:
cont = contained_1_in_2[query_name]
if not best_match:
c_no_match += 1
else:
c_match += 1
if cont < CONTAIN_THRESHOLD:
c_no_contain += 1
else:
c_contain += 1
if similarity > IDENT_THRESHOLD:
identical_names.append((query_name, best_match))
c_ident += 1
print('----')
print('{} vs {}: {} signatures'.format(args.dir1, args.dir2,
len(sigdict1)))
print('identical count:', c_ident)
print('containment count:', c_contain)
print('matches:', c_match)
print('no match:', c_no_match)
print('no contain:', c_no_contain)
print('identical:')
for (k, v) in identical_names:
print("{} = {}".format(k, v))
# 2 in 1
c_ident = 0
c_match = 0
c_contain = 0
c_no_match = 0
c_no_contain = 0
identical_names = []
for query_name in sigdict2:
best_match = None
similarity = 0.0
cont = 0.0
if query_name in matches_2_in_1:
(best_match, similarity) = matches_2_in_1[query_name]
if query_name in contained_2_in_1:
cont = contained_2_in_1[query_name]
if not best_match:
c_no_match += 1
else:
c_match += 1
if cont < CONTAIN_THRESHOLD:
c_no_contain += 1
else:
c_contain += 1
if similarity > IDENT_THRESHOLD:
identical_names.append((query_name, best_match))
c_ident += 1
print('----')
print('{} vs {}: {} signatures'.format(args.dir2, args.dir1,
len(sigdict2)))
print('identical count:', c_ident)
print('containment count:', c_contain)
print('matches:', c_match)
print('no match:', c_no_match)
print('no contain:', c_no_contain)
print('identical:')
for (k, v) in identical_names:
print("{} = {}".format(k, v))
def sbt_gather(self, args):
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name')
parser.add_argument('query')
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.05, type=float)
parser.add_argument('-o', '--output', type=argparse.FileType('wt'))
parser.add_argument('--csv', type=argparse.FileType('wt'))
sourmash_args.add_moltype_args(parser)
args = parser.parse_args(args)
if args.protein:
if args.dna is True:
raise Exception('cannot specify both --dna and --protein!')
args.dna = False
moltype = None
if args.protein:
moltype = 'protein'
elif args.dna:
moltype = 'dna'
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
sl = sig.load_signatures(args.query, select_ksize=args.ksize,
select_moltype=moltype)
sl = list(sl)
if len(sl) != 1:
print('When loading query from "{}",'.format(args.query),
file=sys.stderr)
print('{} query signatures matching ksize and molecule type; need exactly one.'.format(len(sl)))
sys.exit(-1)
query = sl[0]
query_moltype = 'UNKNOWN'
if query.estimator.is_molecule_type('dna'):
query_moltype = 'DNA'
elif query.estimator.is_molecule_type('protein'):
query_moltype = 'protein'
query_ksize = query.estimator.ksize
print('loaded query: {}... (k={}, {})'.format(query.name()[:30],
query_ksize,
query_moltype))
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
#s = sig.load_signatures(args.query, select_ksize=args.ksize)
orig_query = query
sum_found = 0.
found = []
while 1:
search_fn = SearchMinHashesFindBest().search
results = []
# use super low threshold for this part of the search
for leaf in tree.find(search_fn, query, 0.00001):
results.append((query.similarity(leaf.data), leaf.data))
#results.append((leaf.data.similarity(ss), leaf.data))
if not len(results): # no matches at all!
break
# take the best result
results.sort(key=lambda x: -x[0]) # reverse sort on similarity
best_sim, best_ss = results[0]
sim = best_ss.similarity(orig_query)
# adjust by size of leaf (kmer cardinality of original genome)
if best_ss.estimator.hll:
leaf_kmers = best_ss.estimator.hll.estimate_cardinality()
query_kmers = orig_query.estimator.hll.estimate_cardinality()
f_of_total = leaf_kmers / query_kmers * sim
else:
f_of_total = 0
if not found and sim < args.threshold:
print('best match: {}'.format(best_ss.name()))
print('similarity is {:.5f} of db signature;'.format(sim))
print('this is below specified threshold => exiting.')
break
# subtract found hashes from search hashes, construct new search
new_mins = set(query.estimator.mh.get_mins())
found_mins = best_ss.estimator.mh.get_mins()
# print interim & save
print('found: {:.2f} {} {}'.format(f_of_total,
len(new_mins),
best_ss.name()))
found.append((f_of_total, best_ss, sim))
sum_found += f_of_total
new_mins -= set(found_mins)
e = sourmash_lib.Estimators(ksize=args.ksize, n=len(new_mins))
for m in new_mins:
e.mh.add_hash(m)
new_ss = sig.SourmashSignature('foo', e)
query = new_ss
print('found {}, total fraction {:.3f}'.format(len(found), sum_found))
print('')
if not found:
sys.exit(0)
found.sort()
found.reverse()
print('Composition:')
for (frac, leaf_sketch, sim) in found:
print('{:.2f} {}'.format(frac, leaf_sketch.name()))
if args.output:
print('Composition:', file=args.output)
for (frac, leaf_sketch, sim) in found:
print('{:.2f} {}'.format(frac, leaf_sketch.name()),
file=args.output)
if args.csv:
fieldnames = ['fraction', 'name', 'similarity', 'sketch_kmers']
w = csv.DictWriter(args.csv, fieldnames=fieldnames)
w.writeheader()
for (frac, leaf_sketch, sim) in found:
cardinality = leaf_sketch.estimator.hll.estimate_cardinality()
w.writerow(dict(fraction=frac, name=leaf_sketch.name(),
similarity=sim,
sketch_kmers=cardinality))
def watch(self, args):
"Build a signature from raw FASTA/FASTQ coming in on stdin, search."
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name')
parser.add_argument('-o', '--output', type=argparse.FileType('wt'))
parser.add_argument('-k', '--ksize', type=int, default=DEFAULT_K)
parser.add_argument('--threshold', default=0.05, type=float)
parser.add_argument('--input-is-protein', action='store_true')
sourmash_args.add_moltype_args(parser, default_dna=True)
parser.add_argument('-n', '--num-hashes', type=int,
default=DEFAULT_N,
help='number of hashes to use in each sketch (default: %(default)i)')
parser.add_argument('--name', type=str, default='stdin')
args = parser.parse_args(args)
if args.input_is_protein and args.dna:
print('WARNING: input is protein, turning off DNA hash computing.',
file=sys.stderr)
args.dna = False
args.protein = True
if args.dna and args.protein:
notify('ERROR: cannot use "watch" with both DNA and protein.')
if args.dna:
moltype = 'DNA'
is_protein = False
else:
moltype = 'protein'
is_protein = True
E = sourmash_lib.Estimators(ksize=args.ksize, n=args.num_hashes,
protein=is_protein)
streamsig = sig.SourmashSignature('', E, filename='stdin',
name=args.name)
notify('Computing signature for k={}, {} from stdin',
args.ksize, moltype)
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
def do_search():
search_fn = SearchMinHashesFindBest().search
results = []
for leaf in tree.find(search_fn, streamsig, args.threshold):
results.append((streamsig.similarity(leaf.data),
leaf.data))
return results
notify('reading sequences from stdin')
screed_iter = screed.open('/dev/stdin')
watermark = WATERMARK_SIZE
# iterate over input records
n = 0
for n, record in enumerate(screed_iter):
# at each watermark, print status & check cardinality
if n >= watermark:
notify('... read {} sequences', n)
watermark += WATERMARK_SIZE
if do_search():
break
if args.input_is_protein:
E.mh.add_protein(record.sequence)
else:
E.add_sequence(record.sequence, False)
results = do_search()
if not results:
notify('... read {} sequences, no matches found.', n)
else:
results.sort(key=lambda x: -x[0]) # take best
similarity, found_sig = results[0]
notify('FOUND: {}, at {:.3f}', found_sig.name(),
similarity)
if args.output:
sig.save_signatures([streamsig], args.output)
def watch(args):
"Build a signature from raw FASTA/FASTQ coming in on stdin, search."
from sourmash_lib.sbt import SBT, GraphFactory
from sourmash_lib.sbtmh import search_minhashes, SigLeaf
from sourmash_lib.sbtmh import SearchMinHashesFindBest
parser = argparse.ArgumentParser()
parser.add_argument('sbt_name', help='name of SBT to search')
parser.add_argument('inp_file', nargs='?', default='/dev/stdin')
parser.add_argument('-q',
'--quiet',
action='store_true',
help='suppress non-error output')
parser.add_argument('-o',
'--output',
type=argparse.FileType('wt'),
help='save signature generated from data here')
parser.add_argument('--threshold',
default=0.05,
type=float,
help='minimum threshold for matches')
parser.add_argument(
'--input-is-protein',
action='store_true',
help='Consume protein sequences - no translation needed')
sourmash_args.add_construct_moltype_args(parser)
parser.add_argument(
'-n',
'--num-hashes',
type=int,
default=DEFAULT_N,
help='number of hashes to use in each sketch (default: %(default)i)')
parser.add_argument('--name',
type=str,
default='stdin',
help='name to use for generated signature')
sourmash_args.add_ksize_arg(parser, DEFAULT_LOAD_K)
args = parser.parse_args(args)
set_quiet(args.quiet)
if args.input_is_protein and args.dna:
notify('WARNING: input is protein, turning off DNA hashing.')
args.dna = False
args.protein = True
if args.dna and args.protein:
notify('ERROR: cannot use "watch" with both DNA and protein.')
if args.dna:
moltype = 'DNA'
is_protein = False
else:
moltype = 'protein'
is_protein = True
tree = SBT.load(args.sbt_name, leaf_loader=SigLeaf.load)
def get_ksize(tree):
"""Walk nodes in `tree` to find out ksize"""
for node in tree.nodes.values():
if isinstance(node, sourmash_lib.sbtmh.SigLeaf):
return node.data.minhash.ksize
# deduce ksize from the SBT we are loading
ksize = args.ksize
if ksize is None:
ksize = get_ksize(tree)
E = sourmash_lib.MinHash(ksize=ksize,
n=args.num_hashes,
is_protein=is_protein)
streamsig = sig.SourmashSignature('', E, filename='stdin', name=args.name)
notify('Computing signature for k={}, {} from stdin', ksize, moltype)
def do_search():
search_fn = SearchMinHashesFindBest().search
results = []
for leaf in tree.find(search_fn, streamsig, args.threshold):
results.append((streamsig.similarity(leaf.data), leaf.data))
return results
notify('reading sequences from stdin')
screed_iter = screed.open(args.inp_file)
watermark = WATERMARK_SIZE
# iterate over input records
n = 0
for n, record in enumerate(screed_iter):
# at each watermark, print status & check cardinality
if n >= watermark:
notify('\r... read {} sequences', n, end='')
watermark += WATERMARK_SIZE
if do_search():
break
if args.input_is_protein:
E.add_protein(record.sequence)
else:
E.add_sequence(record.sequence, False)
results = do_search()
if not results:
notify('... read {} sequences, no matches found.', n)
else:
results.sort(key=lambda x: -x[0]) # take best
similarity, found_sig = results[0]
print_results('FOUND: {}, at {:.3f}', found_sig.name(), similarity)
if args.output:
notify('saving signature to {}', args.output.name)
sig.save_signatures([streamsig], args.output)