afni.nimh.nih.gov

I'm noticing that
if I do
3drotate .... -ashift X Y Z -prefix mydata.rotate mydata+orig
cat_matvec 'mydata.rotate+orig::ROTATE_MATVEC_0000000' > shift.1D

I seem to get the inverse transformation than what was applied to mydata+orig, thus necessitating the -I option in cat_matvec


hate to ask, but is this a "bug" or merely a misunderstood feature?