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 why you need the grid to be the same as another dataset when clearly this is in a different space. Still, you can accomplish this in another step with 3dresample and specify the voxel dimensions. Furthermore, the output from this *can* be used as 3dWarp's gridset option and the original 3dWarp command executed again with that difference and no additional interpolation.