Thanks for the joke. Now - just a couple more questions about coordinates, sorry.

1. I have transformed my data using @auto_tlrc CA_N27_ML -- so this data would be in MNI space, right? or wrong?

2. When I look at these .tlrc images in afni, I get, let's say RAI of 13 64 -4 -- this is ... in Talairach space, right?
3. When I get the CM of each cluster using 3dCM - it gives me RAI in Talairach space, right?
4 But - since my data has been transformed using CA_N27_ML -- don't I need to use MNI space?
5. I can see that getting correct MNI is not a matter of just changing sign on some of the dimensions;I know the 2 spaces are different sizes as well. To make concrete - if I put MNI -13 -66 -8 in Enter MNI in viewer, I can get my original RAI of 13 64 -4.

MNI -13 -66 -8
RAI (xyz): 13 64 -4
So, as expected, LR and AP have changed sign -- but also the AP and SI indexes change. Is this some constant change or does it vary across the brain?

6 But I guess the main question is: How would I go about getting LPI coordinates in MNI space using afni?? thanks mb