Thanks, Zaid. I guess I'm missing something.
(1) If there is no interpolation going on, why the warning message? "NOTE: Running the script multiple times on the same data will cause a lot of trouble..."
(2) How can a DSET of 3mm voxels move (relative to 1mm-BASE) in multiples other than its native resolution without some sort of interpolation?
Thanks for helping me out on this one,
A