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Hello,
I am trying to convert ascii files containing vertex-wise thickness data into binary curvature files for subsequent smoothing and input into mri_glmfit. The command I used is:
mris_convert lh.test.asc lh.test.thickness
But then get the following error:
ERROR: MRISalloc: nfaces=-5 < 0
No such file or directory
I'm not sure what file or directory the error message is referring to, nor what the meaning of nfaces is. I am running version 6.0 on macOS Mojave. I have also attached a truncated version of the ascii file for inspection purposes (the whole thing was too big), which was converted from a csv that was generated by a python script correcting for site effects. This script took in as input the original ascii converted from the original lh.thickness file using mris_convert. The coordinates correspond to the fsaverage template (~160k vertices in the whole file).
Thanks in advance for any guidance,