On Tue, Aug 31, 2010 at 8:40 AM, Bruce Fischl <fischl@nmr.mgh.harvard.edu> wrote:

Hi Corinna,

the gwratio.mgh is a scalar field over the surface, *not* a surface (i.e. it has no topology information). Try:

mris_anatomical_stats -t lh.gwratio.mgh

and the rest as normal. Note that it will report the values as "thickness"

cheers
Bruce

On Mon, 30 Aug 2010, corinna bauer wrote:

I am trying to get an output with average gray/white ratio values for each
segmentation. I tried using the gwratio.mgh file as the input for
mris_anatomical_stats, but got the following error message:

reading input surface
/home/freesurfer4.4.0/subjects/1057/surf/lh.gwratio.mgh...
ERROR: MRISread: file
'/home/freesurfer4.4.0/subjects/1057/surf/lh.gwratio.mgh' has 0 vertices!

Any insight?

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