nick Wrote:
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> I don't understand this question.
> freesurfer_read_surf returns vertices and face
> indices of a surface, which is not much related to
> ROI work. Except of course that the indices in an
> ROI refer to surface vertices.

My question is really what the correspondence is between the SUMA ROI indices and vertices loaded in with freesurfer_read_surf. Are they one-to-one? If one of my ROI indices is 188, does that ROI include a node with the set of vertex coordinates (in mm) on the 188th row of the matrix loaded in with freesurfer_read_surf? Or do I need to transform the coordinates somehow to get the actual position? Is there a way to get the actual vertex coordinates for a SUMA ROI, rather than just indices?