Thank you Bruce.

I am not that familiar with this process. How can I look the transformation
of a specific vertex index? Is this done still with mri_surf2surf?

Dorian

On Wed, Jan 25, 2017 at 4:50 PM, Bruce Fischl <fis...@nmr.mgh.harvard.edu>
wrote:

> Hi Dorian
>
> the transform should be by looking up the spherical coordinates on the
> sphere.reg for that vertex index and using that to find the corresponding
> fsaverage sphere.reg vertex.
>
> cheers
> Bruce
> On Wed, 25 Jan 2017, Dorian P. wrote:
>
> > Hi, I am trying to find the corresponding coordinate of a vertex in
> lh.pial
> > in fsaverage space. I manage to transform lh.pial in fsaverage space but
> > this does not give corresponding points or a way to do point by point
> > transformation.
> > I want to do the same with some vertices from lh.pial-outer-smoother.
> Trying
> > to transform this with mri_surf2surf gives an error because obviously
> there
> > is no registration of that mesh. Any idea if this can be achieved at all?
> >
> > Last question: am I correct assuming that the surface to surface
> > registration (sphere.reg) does a better job at matching gyri and sulci on
> > fsaverage than the simple conversion in MNI305 (aka fsaverage):
> > MNI305RAS = TalXFM*Norig*inv(Torig)*[tkrR tkrA tkrS 1]'
> >
> > Thank you.
> > Dorian
> >
> >
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