Hello AFNI:
We wanted to obtain a list of voxel (x,y,z) coordinates that form the outside surface of the brain. That is, the coordinates that form the boundary of a dataset (the voxels next to the skull). We tried searching through the website but remain clueless how to do this... maybe it is similar to your "3dmaskdump" option?
Surely this is not something many people do. But it would be very helpful for us in our process of making visualizations. Is there a straightforward way of doing this?
Thank you so much.