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

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gang
January 04, 2017 04:36PM
Jordan,

Even though you dummy code the variable Group in both of your scripts, but you didn't declare it as a quantitative variable. Therefore 3dLME simply treated it as a factor, and that's why you got exactly the same result between the two approaches. To let 3dLME do what you intended to achieve, declare Group as a quantitative varialbe *and* center it properly with something like:

3dLME -prefix lme-B+C \
-jobs 4 \
-model 'Group*Age' \
-qVars 'Group,Age' \
-qVarCenters '0,14.79' \
-ranEff '~1|Subj' \
-resid lme-B+C-resid \

Gang
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3dLME Grouping variables

Jordan January 04, 2017 11:27AM

Re: 3dLME Grouping variables

gang January 04, 2017 04:36PM