AFNI Message Board

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

History of AFNI updates  

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bob cox
November 10, 2003 12:53PM
Is it incorporating data from almost twice as many neighboring voxels through-plane as from within-plane?

Yes. The smoothing kernel is based on distance, not on voxels. However, if you want to make it be based on voxels, then you can use the "-dxyz=1" option to 3dmerge, then specify the FWHM of the blurring in voxels.

"Isotropic" means "the same in all directions" -- in this case, the same physical distance.

bob cox

Subject Author Posted

Isotropic smoothing across non-isotropic voxels

Jim Bjork November 10, 2003 12:32PM

Re: Isotropic smoothing across non-isotropic voxels

bob cox November 10, 2003 12:53PM