[pymvpa] redundant voxels

Yaroslav Halchenko debian at onerussian.com
Thu Apr 1 17:55:54 UTC 2010

On Thu, 01 Apr 2010, kimberg at mail.med.upenn.edu wrote:
> > In [13]: remove_invariant_features?
> As I understand it, removeInvariantFeatures just removes features that have no variance across samples.  The voxels I need to remove have different values for each sample, but neighboring voxels may have exactly the same values for each sample (these are actually 0/1 lesion maps from stroke patients, so it often happens that neighboring voxels will be lesioned in exactly the same subset of patients).  In any case, right now I do this filtering outside python for various trivial reasons.
d'oh -- I was indeed wrong ;)  I guess we might come up with
'remove_duplicate_features' ;)

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