[pymvpa] searchlight analysis

[Nick Oosterhof]

> On 8 Sep 2017, at 07:58, Pegah Kassraian Fard <pegahkf at gmail.com> wrote:
> 
> That would be great.
> 
> - Files (whole brain - not yet masked) are here
> 
> - Targets/labels are in the labels.mat file, it is binary classification, so one classes' samples are labeled by "1", the other classes by "2", the "7" are just the head movement parameters and can be ignored for classification

How did you set the 'chunks' (in .sa.chunks)? Are the different beta files from different runs? Typically in fMRI each run has a unique value for the chunks sample attribute, for example by setting the value of chunks for each sample to the corresponding run number.
In any case, setting the chunks correctly is important because they affect how crossvalidation is (or can be) done.