[SciPy-dev] Difference between A = sparse.lil_matrix((3, 3), dtype=complex) and A = sparse.lil_matrix((3, 3), complex)
Nils Wagner
nwagner@iam.uni-stuttgart...
Sat Feb 16 14:21:47 CST 2008
Hi all,
Can someone explain the difference between
A = sparse.lil_matrix((3, 3),dtype=complex) and
A = sparse.lil_matrix((3, 3),complex)
The first definition produces a complex matrix while
the second one results in a r e a l matrix.
This is counterintuitive.
In [1]: from scipy import sparse
In [2]: A = sparse.lil_matrix((3, 3),complex)
In [3]: A
Out[3]:
<3x3 sparse matrix of type '<type 'numpy.float64'>'
with 0 stored elements in LInked List format>
In [4]: A = sparse.lil_matrix((3, 3),dtype=complex)
In [5]: A
Out[5]:
<3x3 sparse matrix of type '<type 'numpy.complex128'>'
with 0 stored elements in LInked List format>
Cheers,
Nils
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