I don't understand what you are trying to do. Can you elaborate? Sending command lines is always helpful

Hi freesurfers,

I have an overlay with 4k vertices and I want to decimate it to 1k. This overlay is actually an atlas with a label value for each vertex. My surfaces will have 1k vertices and I need the overlay to 1k so I know which areas each vertex belong to. 

I tried to decimate the atlas.mgh but it gives me this error:

ERROR: MRISread: file '/Users/dsinc35/Desktop/projects/parcellation/MMP_atlas_L.mgh' has 0 vertices! Probably trying to use a scalar data file as a surface!

Maybe there is a way to project it?

Any thoughts?

Thanks,

Dorothy

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