Hi Celine - In an individual pathstats.byvoxel.txt file, the (x,y,z)
coordinates are given for every point along the tract, so you can
calculate the distance between consecutive points.
If you use "trac-all -stat" to put stats together across multiple
subjects, then in the *.log files generated for each tract under the
stats/ directory, you'll find a line like:
INFO: Sampling interval along path is [...]
Best,
a.y
On Fri, 24 Apr 2015, Celine Louapre wrote:
> Hi Anastasia and Tracula experts
> I did analyses with Tracula using the very nice feature that allows to
> perform the statistics along the tracts. I reported the result as function
> of location along the tracts expressed as "voxel index", meaning that the
> first section was voxel index 1, the 2nd tract section was voxel index 2
> etc along the entire path.
> However, I just got a reviewer comment asking for the actual distance
> between each voxel index. I guess this depends on the voxel size, but
> maybe also on the curvature of the tract? Is there a simple way to have
> the average distance between 2 sections along one tract?
> Thank you
> Celine
>
>
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