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  

|
October 03, 2012 04:56PM
> If you have more than 3 inputs (eg, 4) does the expression becomes:
>
> -expr 'step(a-4.2)+2*step(b-2.9)+4*step(c-3.1)+8*step4'
>
> or
>
> -expr 'step(a-4.2)+2*step(b-2.9)+4*step(c-3.1)+16*step4'?

Both are actually good enough to differentiate all the scenarios. However, the first one is better because the multipliers go by the rule of 2^n, n=0, 1, 2, ..., which allows you to interpret the different scenarios based on the binary notation of those scenarios.

Gang
Subject Author Posted

Combining results of multiple t-tests in one viewer

Inna September 26, 2012 05:30PM

Re: Combining results of multiple t-tests in one viewer

nick September 26, 2012 07:03PM

Re: Combining results of multiple t-tests in one viewer

Inna October 03, 2012 03:12PM

Re: Combining results of multiple t-tests in one viewer

gang October 03, 2012 04:56PM

Re: Combining results of multiple t-tests in one viewer

nick October 03, 2012 07:11PM

Re: Combining results of multiple t-tests in one viewer

Daniel Glen October 05, 2012 02:39PM

Re: Combining results of multiple t-tests in one viewer

Daniel Glen September 27, 2012 10:44AM