[SciPy-dev] ValueError: frames are not aligned

Pearu Peterson pearu at cens.ioc.ee
Sat Nov 2 18:32:18 CST 2002


On Sat, 2 Nov 2002, Nils Wagner wrote:

> Hi,
> 
> I tried to compute the pseudo-inverse of a random matrix...
> 
> >>> scipy.__version__
> '0.2.0_alpha_145.4411'
> 
> >>> from scipy import *
> >>> a = rand(5,3)
> >>> a
> array([[ 0.81884205,  0.3865217 ,  0.9218021 ],
>        [ 0.99365133,  0.36057177,  0.64316332],
>        [ 0.00589046,  0.56506401,  0.97917145],
>        [ 0.43969154,  0.44840959,  0.26978564],
>        [ 0.11854674,  0.56671292,  0.8699165 ]])
> >>> ap = linalg.pinv2(a)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/lib/python2.2/site-packages/scipy/linalg/basic.py", line 327, in pi                                      nv2
>     return dot(tran(conj(vh)),tran(conj(u))*s[:,NewAxis])
> ValueError: frames are not aligned
> 
> What is the reason for that ?

It is now fixed in SciPy CVS.

Pearu




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