[pymvpa] Example Dataset

[Yaroslav Halchenko]

ok -- to shine the light a bit.

In our paper's repository (don't you have it, Per? ;-)) I found 
tools/haxby_data_convert.py

which I've used to reconstruct proper 4D Nifti file and labels file out
of the data we got from Haxby awhile ago. In original dataset from Haxby
we had 3D volumes in separate files and text files listing volumes
filenames per each category (except baseline condition). From reading
the original paper, and comparing to the labels we got, it looked like
Haxby discarded 1 volume on each side of the block of stimuli. That
script tried to reincarnate those labels by inserting proper label at
the beginning and at the end of the block.

So, theoretically, those labels we have in example dataset ARE NOT
shifted accordingly by HRF, unless my logic in reincarnating the labels
was wrong, that Haxby removed just volumes from the beginning of the
block, then what we have now would account for HRF by a shift of 1
volume.

I guess this would be the further I could dig out the history of the
labels ;-)

-- 
Yaroslav Halchenko
Research Assistant, Psychology Department, Rutgers-Newark
Student  Ph.D. @ CS Dept. NJIT
Office: (973) 353-1412 | FWD: 82823 | Fax: (973) 353-1171
        101 Warren Str, Smith Hall, Rm 4-105, Newark NJ 07102
WWW:     http://www.linkedin.com/in/yarik