Use mri_segstats with the --slabel option, eg,

mri_segstats --slabel subject $SUBJECTS_DIR/subject/label/lh.cortex --id 1 --i X.mgh --avgwf meanX.dat

On 05/10/2017 08:45 AM, Damien MARIE wrote:

Hi,

I’ve a .mgh that is a volume projected on the surface of the same subject at mid-thickness (output of mri_vol2surf) .

I would like to extract the mean hemipheric value in this X.mgh.

I guess it is possible with mris_anatomical stats but probably my command line is incorrect (see below).

Any advices?

Thank you and best,

Damien

mris_anatomical_stats ct_pp1_N4_bet_MP2RAGEcorr -a ct_pp1_N4_bet_MP2RAGEcorr/label/lh.aparc.annot lh R1.mgh

computing statistics for each annotation in ct_pp1_N4_bet_MP2RAGEcorr/label/lh.aparc.annot. reading volume /home/damien/bin/freesurfer6/subjects/ct_pp1_N4_bet_MP2RAGEcorr/mri/wm.mgz... reading input surface /home/damien/bin/freesurfer6/subjects/ct_pp1_N4_bet_MP2RAGEcorr/surf/lh.R1.mgh... ERROR: MRISread: file '/home/damien/bin/freesurfer6/subjects/ct_pp1_N4_bet_MP2RAGEcorr/surf/lh.R1.mgh' has 0 vertices! Probably trying to use a scalar data file as a surface!

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