It's --sum for this, not --o
doug

On 6/10/13 4:44 PM, Glen Lee wrote:

Thanks Doug! 

I just tried, but I got an error: 

mri_segstats --seg mask.mgh --id 1 --i /fMRI/2D/freesurfer/fsaverage_sym/surf/lh.area --o sum.dat

ERROR: Option --o unknown

I don't see --o option when I looked up mri_segstats --help either. FYI, I'm using v5.1. 

Any idea? 

On Mon, Jun 10, 2013 at 3:39 PM, Douglas N Greve <greve@nmr.mgh.harvard.edu> wrote:

Hi Glen, you can use

mri_segstats --seg mask.mgh --id 1 --i
$SUBJECTS_DIR/fsaverage_sym/surf/lh.area --o sum.dat

doug

On 06/10/2013 03:17 PM, Glen Lee wrote:
> Dear freesurfer users
>
> I'm wondering if there is any way of figuring out the surface size
> within a mask image (mask.mgh)
> which is generated after running a group-level GLM analysis (2nd RFX)
> using mri_glmfit.
>
> As I'm thinking, this may be:
>   number of vertex by dimension of one vertex (1mm).
>
> But I could be wrong and let me know if anyone knows the solution.
>
> -Glen
>
> fyi) the group analysis was performed in freesurfer sym space.
>
>
>

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Douglas N. Greve, Ph.D.
MGH-NMR Center
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