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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July 13, 2009 03:09PM
I would first look at the inputs to 3dFWHMx carefully. The program works by computing statistics of the spatial first differences of the input, and that is only possible if there are a lot of neighboring voxels in the mask. In the worst case, if your mask comprised only the 'white' squares on a chessboard, then 3dFWHMx would fail as you describe.
Subject Author Posted

3dFWHMx

Pradeep Kurup July 13, 2009 02:13PM

Re: 3dFWHMx

bob cox July 13, 2009 03:09PM