External Email - Use Caution @Chris:
I recently needed exactly what you want in Matlab, feel free to use it: https://github.com/dfsp-spirit/comp_neuro_science/blob/master/matlab_utility_functions/mesh_neighborhood.m A usage example is included (see script). It's not terribly efficient, but it works. To get the direct neighbors (in distance 1) of vertex 500: [verts, faces] = read_surf("path/to/lh.white"); mesh_neighborhood(faces, [500], 1); Hint: beware of indexing differences (1-based in Matlab, 0-based in C/FreeSurfer) when using it. Tim -- Dr. Tim Schäfer Postdoc Computational Neuroimaging Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy University Hospital Frankfurt, Goethe University Frankfurt am Main, Germany > On February 14, 2020 at 4:15 PM "Douglas N. Greve" <dgr...@mgh.harvard.edu> > wrote: > > > You'll have to use read_surf.m to read in the fsaverage surface. The > surface will neighbor info > > On 2/13/2020 1:51 PM, Mcnorgan, Christopher wrote: > > > > External Email - Use Caution > > > > I’m interested in working with data mapped to the .sphere > > icosohedrons. I understand from a response from Doug back in 2017 that: > > waveforms = fast_vol2mat(MRIread('waveform.nii.gz')); > > will give me a v x time matrix of values from my functional values. > > In the case of fsaverage, I believe I can expect somewhere around 160K > > rows, 1 per vertex, for each hemisphere. > > I was wondering how I might be able to determine the neighbors (i.e., > > vertices connected by an edge) for any vertex v? > > > > Thanks, > > Chris > > > > /********************************************** > > * Chris McNorgan > > * Assistant Professor > > * Department of Psychology > > * University at Buffalo, > > * The State University of New York > > * http://ccnlab.buffalo.edu/ > > * Office: 716.645.0236 > > * Lab: 716.645.0222 > > **********************************************/ > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Tim Schäfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
