[SciPy-User] Some thing wrong in scipy reference

Ralf Gommers ralf.gommers@googlemail....
Sat Jul 21 03:02:10 CDT 2012


2012/7/21 王瑞期 <shahuwang@qq.com>

>
> http://docs.scipy.org/doc/scipy/reference/generated/scipy.cluster.vq.whiten.html#scipy.cluster.vq.whiten
>
>  In the bottom of this page,the result of the whiten function is wrong.
>

You're right, the current output as documented is off by a constant factor:
>>> res = whiten(features)
>>> res * 3.41250074 / res[0, 0]  # reproduce docstring output
array([[ 3.41250074,  2.20300046,  5.88897275],
       [ 2.69407953,  2.39456571,  7.62102356],
       [ 1.43684242,  0.57469577,  5.88897275]])

Does anyone know why, and is this result correct?

Ralf
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