[pymvpa] dataset issue

[Yaroslav Halchenko]

On Mon, 10 Apr 2017, David Soto wrote:

>    HI, I am trying to create a dataset comprised of vectors of behavioural
>    data for classification
>    It all seems OK but when I check the output summary() the counts of
>    targets in each chunk is not right (total should be around 590) 
>    however the 
>    Sequence statistics for 588 entries from set [1, 2] seems fine?
>    Counter-balance table for orders up to 2:
>    Targets/Order O1 | O2 |
>    1: 163 130 | 142 151 |
>    2: 130 164 | 150 143 |

you have 11 chunks

you can't estimate O1 for the first trial 

588-1 = 587 for O1 which matches 163+130+130+164, similarly for O2
-- two trials are dropped and you have 586

>    There may be something going on in the way I prepare the dataset.
-- 
Yaroslav O. Halchenko
Center for Open Neuroscience     http://centerforopenneuroscience.org
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