We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
https://discuss.afni.nimh.nih.gov
Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.
The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
I'm not sure what you want to do here. Do you want to go from the x,y,z coordinates in mm (maybe in an RAI or LPI order) to an IJK storage index order or something else? 3dmaskdump and Vecwarp might be useful tools here, but we'll need more details.