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# ----------------------------------------------------------------------------
# Copyright (c) 2013--, scikit-bio development team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE.txt, distributed with this software.
# ----------------------------------------------------------------------------
def _check_dm(dm):
if dm.shape[0] < 3:
raise ValueError("Distance matrix must be at least 3x3 to generate a tree.")
def _check_dm_tree(dm, tree):
_check_dm(dm)
if frozenset(dm.ids) != tree.subset():
raise ValueError("Inconsistent taxa between tree and distance matrix.")
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