How can I dived a gamma.mgh with another gamma.mgh to get new mgh structure? Is there any Freesurfer Matlab function that I should use. I am able to use Matlab to calculate the difference for vol.

n=size(gamm.vol(2))

for i=1:n; test=gamma.mgh.vol(i)/gamma.mgh(i) end

I am trying to follow this howto at http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg07433.html.

Knut J