Hi Shahin

 

What is your command line? mris_flatten does some random sampling of distances since the whole N^2 distance matrix is too big. You can remove the randomness by either specifying -norand or using a specific seed like -seed 1234.

 

That said, you second image looks like a failure of the flattening. This usually means the distances aren’t sampled out far enough/densely enough. The defaults are super old (7 neighbor ring, 12 distances/ring). You could try something like -distances 20 20 and see if that fixes things (and -norand if you want)

 

Cheers

Bruce

 

 

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