Hi Arnaud

why would transparency help? You should be able to view the overlay on any surface without transparency (the overlay defines the colors displayed on the surface). Can you explain further why the normal display in tksurfer doesn't do what you want?

cheers

Bruce

On Tue, 1 Oct 2013, Arnaud Boré wrote:

Dear Freesurfer experts, Using tksurfer I open an inflated surface and I display the pial surface. Then I load an overlay but I'm not able to see it correctly. Is it possible to put a transparency/opacity value for the surface so I can see better my overlay ?

Thank you for your help

Arnaud Bore