[pymvpa] Tutorial data: did something change?

[Yaroslav Halchenko]

;-)  

data under mvpa2/data is just for testing.  For the 2.3.0 release we
decided to come up with a downsampled instance of the tutorial data,
hence tutorial_data_25mm  is the tutorial data downsampled into
25x25x25 mm voxels -- not something you would encounter in real life but
allows us to test/smoke real pipelines (e.g. tutorial).

Original tutorial data is still out there from the original location and
it is the one which actually should be used to go through the tutorial
-- nothing really changed in this regard.

Cheers!

On Tue, 01 Jul 2014, Shane Hoversten wrote:

>    Howdy -
>    I'm trying to walk someone through the early part of the PyMVPA tutorial.
>     We installed the latest PyMVPA 2.31 via macports; (the last time I did it
>    it was v.2.2.0) and the directory names seem to have changed, s.t. the
>    real tutorial data is in 

>    /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/mvpa2/data/tutorial_data_25mm/data

>    which I think is different from where it used to be?  Anyway, the
>    documentation here:

>    [1]http://www.pymvpa.org/tutorial_datasets.html

>    describes mask_vt.nii.gz as containing 577 features, but from what I can
>    tell it's only got a single active voxel.  Check it out:

>    ❯❯❯ for file in *.nii.gz; do

>    echo "for $file ==> " $(3dBrickStat -positive -count $file)
>    done
>    for anat.nii.gz ==>  352
>    for bold.nii.gz ==>  871200
>    for bold_mean.nii.gz ==>  600
>    for mask_brain.nii.gz ==>  129
>    for mask_gray.nii.gz ==>  28
>    for mask_hoc.nii.gz ==>  45
>    for mask_vt.nii.gz ==>  1
>    for mask_white.nii.gz ==>  34
>    There's other data in the .../mvpa2/data/ directory, but the bold data is
>    of different dimension, the mask is of different dimension and also a
>    different name.  Am I missing something obvious, or are the dox and the
>    PyMVPA distribution out of sync now?
>    S

> References

>    Visible links
>    1. http://www.pymvpa.org/tutorial_datasets.html

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-- 
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Research Scientist,            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
WWW:   http://www.linkedin.com/in/yarik