I was not able to replicate with subjects that I have. Does the same thing happen if you use the subject as the target instead of using fsaverage? If so, then upload the subject for me so I can replicate doug

On 4/11/14 7:30 AM, Sabin Khadka wrote:

Hi all,

I am trying to extract vertexwise surface area values in an ascii files. For that I am doing

mri_surf2surf --hemi ?h --srcsubject <subject dir> area --src_type curv --trgsubject fsaverage --trgsurfval XYZ-area --trg_type curv mris_convert -c XYZ-area ?h.white XYZ-area.asc

However I am getting surface area values for some vertices as negative.

1. Am I following correct steps while writing vertex-wise values in ascii files?
2. Aren't values of surface-area supposed to be non-negative?

I am not sure what I am missing here.

Thanks for the help.

-Sabin

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