Dear AFNI users-

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.

Sincerely, AFNI HQ

# concatenate data sets of interest
3dTcat -prefix ALLCAT.nii.gz  DSET1 DSET2 DSET3 ...
# make a mask of anywhere that is nonzero across the original data sets
3dTstat -nzcount -prefix MMM.nii.gz ALLCAT.nii.gz
# find the volume index+1 of the subbrick with the maximum value within the mask, per voxel
3dTstat -argmax1 -mask MMM.nii.gz -prefix MAP  ALLCAT.nii.gz