Hi Barbara - Your hack sounds like the right idea. One option would be to
switch the FA values between the pathstats.byvoxel.txt files in the lh.*
and rh.* output directories, by editing the text files without renaming
the directories.
Hope this helps,
a.y
On Mon, 25 Jul 2016, Barbara Kreilkamp wrote:
> Dear Freesurfers,
>
> I've got data pertaining to patients with left and right-sided temporal
> lobe epilepsy (TLE).
> My aim is to group those tracts according to side of epilepsy for
> waypoint comparisons.
>
> Basically for patients with right TLE I'd like to look at right tracts
> and at the same time for patients with left TLE I'd like to look at left
> tracts (ipsilateral tracts), I need to do the same for the contralateral
> tracts.
> Is there a straightforward way of doing this?
>
> I've already copied the tracts to respective ipsi and contralateral
> byvoxel.txt files. Like so: for i in R*/dpath/rh*/pathstats.byvoxel.txt;
> do cp $i ${i/byvoxel./byvoxel_ipsiRTLE.}; done ; for i in
> R*/dpath/lh*/pathstats.byvoxel.txt; do cp $i
> ${i/byvoxel./byvoxel_contraRTLE.}; done
> Now I have to flip the x-coordinates in the patients with right TLE (to
> make them more comparable to the tracts of the patients with left TLE).
> That will not be a problem, but I wonder if I am missing something?
> Can I then just go ahead and run trac-all -stats -c dmrircfile to
> generate the mean waypoint tracts etc.?
>
> Thank you very much,
> Best wishes,
>
> Barbara
>
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