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 30, 2015 12:50PM
> This is the approach that SPM always takes, and it doesn't seem to cause trouble when a model is just the interaction
> of several variables (quantitative or factorial), corresponding to an R model formula of (IIUC) `y ~ factor1*factor2`.

That's just an interface issue, and the internal pseudo-inverse approach works with the same mechanism as the other coding strategies. In terms of testing the special hypothesis

b_1 = b_2 = ... = b_n = 0

as far as I can tell, there is no magic wand when there are other variables involved regardless the coding method.

Gang
Subject Author Posted

3dLME model troubles

Isaac Schwabacher July 24, 2015 03:48PM

Re: 3dLME model troubles

gang July 24, 2015 04:25PM

Re: 3dLME model troubles

Isaac Schwabacher July 24, 2015 04:35PM

Re: 3dLME model troubles

gang July 26, 2015 11:32AM

Re: 3dLME model troubles

Isaac Schwabacher July 28, 2015 11:40AM

Re: 3dLME model troubles

gang July 28, 2015 02:56PM

Re: 3dLME model troubles

Isaac Schwabacher July 28, 2015 06:14PM

Re: 3dLME model troubles

gang July 29, 2015 02:16PM

Re: 3dLME model troubles

Isaac Schwabacher July 29, 2015 04:57PM

Re: 3dLME model troubles

gang July 30, 2015 12:50PM