[pymvpa] Coordinates retrieved from Searchlight

[Pegah Kassraian Fard]

Dear pymvpa support, I would be very keen to know how can I map the
searchlight coordinates to MNI space (and why mine are all positive). Could
you help me with that?
Thanks,
Pegah

Hi all,


I am saving the coordinates corresponding to classification accuracies as
follows:

        max_i = np.argmin(sl_map.samples[0])  # min

        coord = db12s.fa[sprefix_indices_key][max_i]


        np.save(dir + '/coords' + str_label_set,
db12s.fa[sprefix_indices_key])



Now looking at these coordinates, it strikes me that they all are positive
- which can't be for MNI coordinates describing the entire cortex (I am not
masking). How can this be? And if these are not MNI coordinates, how could
they be translated to such?

Thanks,
Pegah


On Fri, Dec 8, 2017 at 2:03 PM, Pegah Kassraian Fard <pegahkf at gmail.com>
wrote:

> Hi all,
>
>
> I am saving the coordinates corresponding to classification accuracies as
> follows:
>
>         max_i = np.argmin(sl_map.samples[0])  # min
>         coord = db12s.fa[sprefix_indices_key][max_i]
>
>         np.save(dir + '/coords' + str_label_set,
> db12s.fa[sprefix_indices_key])
>
>
>
> Now looking at these coordinates, it strikes me that they all are positive
> - which can't be for MNI coordinates describing the entire cortex (I am not
> masking). How can this be? And if these are not MNI coordinates, how could
> they be translated to such?
>
> Thanks,
> Pegah
>
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