Hello,
Thank you for this great visualization tool!  

I have a surface mesh created from merging the .pial surfaces generated in freesurfer.  I am trying to map nodes on my surface, however, the MRI voxel -> MNI transformation of coordinates is a bit off.  The nodes are ok on the standard surfaces, but significantly off from the freesurfer surface.   It seems like BrainNet viewer modifies the freesurfer coordinate system, such that everything should be in regular MNI?