I would like to edit .gii files for visualisation purposes, but am really unfamiliar with the format and would greatly appreciate some help.
I conducted some ROI surface analyses on structural MRI data using the CAT12 toolbox. I then did some Bayesian analyses outside of the toolbox, ending up with a Bayes Factor for each ROI of the surface atlas.
I now want to make a surface map that has the Bayes Factors of my analysis in them, instead of the ROI values, to visualise my results. Does anyone have any idea how to do this? When I do this for .nii images, I usually just take the atlas and then replace the ROI values of the atlas with the corresponding Bayes Factors. There is probably a really easy way to do this for .gii files as well, I am just very new to that format and don’t even understand what the different components of surface files are. I know that I could make a colour file where I specify RGB values for each voxel, but I haven’t been able to figure out an automatic way to do this based on my Bayes Factors, so any help or hint would be greatly appreciated.