what are you trying to achieve? It might be easiest to use something like fsaverage5 as the downsampled surface. Then you would just map your subjects to fsaverage5 using the existing sphere.reg files
cheers Bruce On Fri, 4 Mar 2016, marmaduke woodman wrote: > On 03/04/2016 09:10 PM, marmaduke woodman wrote: > >> However, I'd like to recover the cortical parcellation for the >> downsampled surface. > > I tried to decimate the pial & white surfaces, generate a corresponding > thickness file and then > > mris_sample_parc -ct /opt/freesurfer/FreeSurferColorLUT.txt tvb lh > aparc+aseg.mgz decim.annot > > but this seems not to generate a proper annot file. The same procedure > works for the original pial & white surfaces. > > > The alternative, it appears to me, would be to generate decimated white, > smoothwm, inflated, sphere, curv & sulc surfaces, apply mris_register to > obtain decimated sphere.reg and then mris_ca_label to obtain a proper > annot file for the decimation. > > > I will try this, but any insight would be appreciated. > > cheers, > Marmaduke > _______________________________________________ > 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 The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
