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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June 21, 2013 03:33PM
The magic function you want is 'ispositive' inside the program 3dcalc; for example

3dcalc -a Yourmask+tlrc -b Atlasmask+tlrc -expr 'ispositive(a)*b' -prefix WhateverYouWant

ispositive(x) returns 0 for x=0 or negative, and returns 1 for x > 0. Et voila!

Answers are slow this week because (a) a bunch of us were at HBM in Seattle, and (b) a bunch of us are sick, and (c) these 2 sets have nonzero intersection.
Subject Author Posted

Change Mask Values to 1

ldgeiger June 21, 2013 02:12PM

Re: Change Mask Values to 1

Bob Cox June 21, 2013 03:33PM

Re: Change Mask Values to 1

ldgeiger June 24, 2013 01:04PM