I don't think we currently have a command to warp the fiber orientations
into a different space. It is possible in theory, and the matrix4 wouldn't
need to be regenerated, but the fiber drawing locations won't line up with
voxel centers anymore (this is cosmetic more than anything, but it bothers
Well, comparison and averaging are not quite the same thing - the idea of
averaging matrix4 presents quite a few challenges, and same voxel space is
not the messiest - it is more difficult to reconcile anatomy that isn't
(and/or can't be) aligned, so the fiber orientations won't match, or places
That makes sense, particularly as one gets closer to the cortex. I do think Oxford has some algorithm that checks the fiber orientations across subjects and swaps their order (to make them maximally matching) for their bedpostx TBSS. TBSS only cares
about aligning the cores of tracts that
