[SciPy-dev] Type handling of matrices
Nils Wagner
nwagner at mecha.uni-stuttgart.de
Tue Dec 20 07:57:25 EST 2005
Hi all,
Is there something like isspd in scipy -- that is a test for real
symmetric positive definite matrices ?
A Cholesky factorization can be used for this task. If it exists the
matrix is spd.
Nils
I found
Type handling
==============
iscomplexobj -- Test for complex object, scalar result
isrealobj -- Test for real object, scalar result
iscomplex -- Test for complex elements, array result
isreal -- Test for real elements, array result
imag -- Imaginary part
real -- Real part
real_if_close -- Turns complex number with tiny imaginary part to real
isneginf -- Tests for negative infinity ---|
isposinf -- Tests for positive infinity |
isnan -- Tests for nans |---- array results
isinf -- Tests for infinity |
isfinite -- Tests for finite numbers ---|
isscalar -- True if argument is a scalar
nan_to_num -- Replaces NaN's with 0 and infinities with large numbers
cast -- Dictionary of functions to force cast to each type
common_type -- Determine the 'minimum common type code' for a group
of arrays
mintypecode -- Return minimal allowed common typecode.
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