the decimation code only finds equally spaced points, I don't think it generates a tesselation. One way to downsample is to map onto on of the ico surfaces, then pick the first n points, where n is one of the downsampled icosahedra. Otherwise, I think there are other people who have written surface downsampling packages.

cheers,
Bruce

On Wed, 9 Mar 2005 [EMAIL PROTECTED] wrote:

Hi:

I am trying to generate a down sampled tessellation file from inflated
pial in TkSurfer. I used write decimation in tool->surface menu, and can
find vertices. How can I fill the boundary of those points, and save the
vertices and faces, so that I can get a new .tri file?

Thanks a lot!
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