[SciPy-Dev] sparse matrices comparison
Tue Feb 21 13:36:10 CST 2012
Sparse matrices don't support comparison. E.g.:
>>> a = csr_matrix([[1, 2], [0, 3]])
>>> b = a.copy()
>>> a == b
>>> a - b
<2x2 sparse matrix of type '<type 'numpy.int64'>'
with 0 stored elements in Compressed Sparse Row format>
This is apparently known (Ticket #639) but I was wondering if it
wouldn't be better to raise a NotImplemented error instead
returning wrong results.
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