Hi Dianne,
you don't need to binarise them, only make sure all your seed voxels have
value greater than zero. This should be fixed for the next release,
allowing negative voxels in the seed mask.
Note that in your case (you probably already know this), you can use the
seedmasks directly in standard space, if you provide probtrack with the
corresponding transformation. The results will be in standard space.
Saad.
> Hi All, I have several masks that I converted from standard space to
> diffusion space...then used in probtrack.
> Because of the reslicing, these masks did not remain perfectly
> binary...they have a grey edge with a value around 0.5.
>
> Can anyone tell me what probtrack will do with mask values that are not
> 1 or 0?
> Should I fix this and rerun everything...or does probtrack simply treat
> everything the same if it is greater than zero?
>
> Thankyou,
>
> Dianne
>
> --
> Dianne Patterson, Ph.D.
> [log in to unmask]
> ERP Lab
> University of Arizona
> 621-3256 (Office)
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