Hi Joe, that is an overlay for a surface, not a surface itself. It just has a value for each vertex. A surface has geometry and neighborhood info. Try using MRIread.m instead.
doug


On 7/14/13 3:57 PM, Joseph Dien wrote:
I've been trying to use the read_surf.m Matlab function included in the Matlab folder of 5.3.0 on a Mac under Matlab 2013a.  

>> [vertex_coords, faces] = read_surf('fmcpr.sm5.fsaverage.lh.nii');
Undefined function or variable "vertex_coords".

Error in read_surf (line 77)
vertex_coords = reshape(vertex_coords, 3, vnum)' ;

It looks as though the reason is that the "magic number" evaluates as:

6029568

which does not match either of the numbers it is looking for (which denote triangle and quad files).

Does that mean that current surface files have a different format and this function needs to be updated accordingly?

Anyway, is there some way I can load surface files into Matlab?

I looked through the fsfast Matlab functions but it wasn't clear to me if one of them would do.

The best candidate seemed to be fast_read_curv.m but it yielded too many numbers so I'm thinking a curvature file is something different.

Thanks!

Joe

--------------------------------------------------------------------------------

Joseph Dien,
Senior Research Scientist
University of Maryland 

Phone: 202-297-8117














_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer