Hi, I want to map a label from one hemi to the other (all on fsaverage). I tried mri_label2label:
mri_label2label --s fsaverage --srchemi lh --trghemi rh --srclabel lh.a.label --trglabel rh.flipped_lh.a.label --regmethod surface
but I think I need to specify a reg file to go between hemispheres, does this exist somewhere? an error message kindly pointed out that this one does not exist: /usr/local/freesurfer/stable5_3_0/subjects/fsaverage/surf/rh.lh.sphere.reg