make sure you're not using a 0-based index with matlab
Yunjie Tong wrote:
Hi Doug and Bruce,
Thanks for your answers. One more question, why the vertex RAS of the same spot on the brain given in TkSurfer is not the ones I read by Matlab program freesurfer_read_surf?
The commands I am using are:
[vertex_coords, faces] = freesurfer_read_surf('tutorial_subjs/subject/surf/lh.inflated');
tksurfer subject lh inflated
Thanks,
YJ
if you have the voxel index (col, row, slice) then you can:
V2R = [ -1.00000 0.00000 0.00000 128.00000 0.00000 0.00000 1.00000 -128.00000 0.00000 -1.00000 0.00000 128.00000 0.00000 0.00000 0.00000 1.00000 ]
crs = [col row slice]';
xyz = V2R[crs+1; 1];
then find the vertex whose xyz coors are closest to xyz
Yunjie Tong wrote:
Hi freesurfer experts,
I have a single subject anatomical data in freesurfer. If I know the volume index of a point on the surface of the cortex ( from T1.mgz in TkMedit), how can I find out the corresponding vertex index or the vertex RAS in TkSurfer. Thanks. BTW, I am using matlab.
Thanks,
Yunjie
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