[Freesurfer] surfaceRAS to vertex coordinates

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Hi all,

I’m trying to get the coordinates for specifice vertices of an inflated surface. I noticed there’s a difference between surfaceRAS and vertex coordinates (though I don’t understand it much).

After getting the index of the specific vertex of interest I load the inflated surface through matlab with `vert = read_surf(‘lh.inflated’);` but notice that the coordinates it outputs is in surfaceRAS.

ex: For fsaverage vertex 34686 SurfaceRAS = -17.53, -15.27, 48.87 Vertex = -46.54,-28.5,56.26

Is there a way I can get the vertex coordinates from those surfaceRAS coordinates? Please let me know when you get the chance.

Have a good day,

Noah