I was wondering if there was a script like aparcstats2table that would accept a functional overlay file that has been sampled to the surface as a measure instead of the available options for structural measures? 

In tksurfer there is a manual way to average over an ROI using the sig.mgh and the y.fsgd file, marking the label and exporting the average graph. I would like to do something similar. Is there anything like this avaiable? 

Thanks,

Jonathan