[Freesurfer] Extracting the centroids from Buckner2011_17Networks_MNI152_FreeSurferConformed1mm_LooseMask.nii.gz atlas

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Dear Freesurfer experts,

I intended to extract centroid of the atlas "Buckner2011_17Networks_MNI152_FreeSurferConformed1mm_LooseMask.nii.gz"

According to the post: https://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/2018-May/057046.html I used the command as: """ source_img_fname=${FREESURFER_HOME}"/average/Buckner_JNeurophysiol11_MNI152/Buckner2011_17Networks_MNI152_FreeSurferConformed1mm_LooseMask.nii.gz"

color_lut=${FREESURFER_HOME}"/average/Buckner_JNeurophysiol11_MNI152/Buckner2011_17Networks_ColorLUT.txt"

mri_segcentroids --i ${source_img_fname} --o ./Buckner2011_17Networks_centroid.txt --ctab ${color_lut} """

Am I use it the right way? Also, I am wondering how to transform the volumetric 17Networks centroids to embed to surface-based fsaverage network centroids (scripts as https://mail.nmr.mgh.harvard.edu/pipermail/freesurfer/2018-February/056056.h...) ?

Thank you for your time!

Best, Foucault