This is a bug. I've fixed it in our development version. You can download an update from here
https://gate.nmr.mgh.harvard.edu/safelinks/greve/mri_surf2surf

On 9/13/19 8:00 AM, Matthieu VANHOUTTE wrote:

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Dear FS's experts,

I am trying to downsample some surface data from fsaverage to fsaverage6 with the following command:

 mri_surf2surf --hemi lh --srcsubject fsaverage --sval ./lh.fsaverage.s8mm.mgh  --trgsubject fsaverage6 --tval ./lh.fsaverage6.s8mm.mgh --cortex

However, the output surface data is a binary file contrary to the source one (please see attached).

Would anyone have an idea of the problem?

Best,

Matthieu

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