Thank you very much for this information!!

Best,
Li


On Jul 24, 2017, at 4:06 PM, Douglas Greve 
<gr...@nmr.mgh.harvard.edu<mailto:gr...@nmr.mgh.harvard.edu>> wrote:


Try using mri_label2label with the --paint option. I think the vertex numbers 
need to be -1 (not random numbers). You will also need to convert the RAS to 
"tkregisterRAS", one of our internal coordinate systems. See 
https://surfer.nmr.mgh.harvard.edu/fswiki/CoordinateSystems, you'll need to do 
the inverse of case #1.

On 7/19/17 12:28 PM, Li Guo wrote:
Dear Freesurfer experts,

My question concerns the .label files and the correspondence between the vertex 
numbers (in the first column) and the R,A,S coordinates.

I have the R,A,S coordinates of voxels that I want to display on the surface. 
For this purpose, I created a label file with the R,A,S coordinates (col 2,3,4) 
and random vertex ID in the col 1 (since I do not know what is the vertex ID 
for a given R,A,S coordinate). I displayed the content of the label file via 
tksurfer. However, tksurfer reads vertex ID, not R,A,S coordinates.

I wonder whether anyone knows about a function computing the vertex ID based on 
the R,A,S coordinates, or an alternative solution to represent the vertices on 
the surface based on the voxel coordinates--and the registration file I assume?

Thank you very much!

Best
Li Guo & Florence Campana

Thanks a lot!



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