Hi Tim

the gcs files are on the surface, so it is not so trivial.If you are looking for MNI coords probably the easiest thing to do is use the .annot files that we distribute with fsaverage.

For the .gca, you can convert a "frame" of it to a nifti volume via:

mri_convert file.gca#0 means.nii.gz mri_convert file.gca#1 labels.nii.gz

then register those to whatever coordinate system you like.

cheers Bruce

On Fri, 18 May 2018, Tim Hahn wrote:

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Dear all,

thanks for building and maintaining freesurfer. It's really a great tool.

My question is very simple: I have three Freesurfer Atlas files (lh and rh curvature.buckner40.filled.desikan_killiany.2010-03-25.gcs and RB_all_2008-03-26.gca) and would like to either get all coordinates in a given area and/or a nifti/img. I realize that the gcs and gca files contain much more information. However, I just need the location information and ROI name for a meta-analytic approach based on the literature.

Is there any way to get this information?

Thanks a lot!

Cheers,

Tim

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