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Hi FS experts,
I ran surface based analysis between two groups. The final output "is cache.th13.pos.sig.cluster.mgh" I would like to convert this file to gii format using "mris_convert" I tried:

mris_convert -c cache.th13.pos.sig.cluster.mgh cache.th13.pos.sig.cluster.gii

Please what I am doing wrong?
Thanks for help
-Dev