[pymvpa] Help with map2nifti()

[Yaroslav Halchenko]

On Mon, 04 Nov 2013, Taku Ito wrote:

>    Are all datasets supposed to have mappers?  My data set was loaded
>    directly from a NIFTI file, using mvpa2.datasets.mri.fmri_dataset, and
>    when I loaded it there was no mapper attached,

it should be there under .a.mapper ... see e.g.
http://www.pymvpa.org/tutorial_datasets.html#loading-fmri-data
for more information

> though I attributed it
>    target values and chunks.  In other words, my original data set also does
>    not have any mappers.  Should I be manually attributing mappers to my data
>    set (e.g., the searchlight call or the z-scoring call) and attach all
>    those mappers as a Chain?

let's first figure out if you indeed didn't have any ;-)

-- 
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Senior Research Associate,     Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834                       Fax: +1 (603) 646-1419
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