[pymvpa] Transpose dataset with PCAMapper

John Magnotti john.magnotti at gmail.com
Sat Sep 24 20:00:52 UTC 2011


The documentation for PCAMapper (
http://www.pymvpa.org/modref/mvpa.mappers.pca.html ) shows that I can
pass in a flag for transposing the data, but I can an error when I try
to do so. It looks like the error is coming from mdp_adaptor

    node = mdp.nodes.PCANode(**kwargs)

Maybe mdp no longer accepts that argument?

I get an out of memory error if I try to run pca on the original
dataset, but I'm thinking if I can transpose the dataset first, then
it should be fine (smaller var-cov matrix).

thanks in advance for any advice,


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