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Dear Freesurfer community,
I'm trying to extract labels from a .gca atlas volume using the following command:
mri_convert atlas.gca -nth 1 labels.mgz (from https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/GcaFormat)
I've found a .gca file in the /average folder for which this works (RB_all_2020-01-02.gca), but for the cortical parcellations I'm actually interested in (e.g. lh.DKTatlas40.gcs), I get the following error:
ERROR: cannot determine file type for lh.DKTatlas40.gcs
I'm pretty confused, because the documentations, as well as other support requests, are pretty clear on that my problem should be solved using the mentioned command. Notably, mri_convert -u, does not list GCA under the supported file-types, maybe this is a versioning issue?
I'm using freesurfer 7.2.0 with Ubunutu 22.04.4.
Any help is much appreciated.
Best regards,
Nys Tjade Siegel