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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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Is point 2 documented anywhere? I think that the -set option should either be eliminated and replaced with options like -setA and -setB similar to what is used in 3dttest++. This would make it clear to the user. It would also be good to document that the comparison is setB-SetA. Again this is opposite of 3dttest++, and is not clear in the current documentation.
by
vmagnotta
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AFNI Message Board
I ran the command @update.afni.binaries -d
and the resulting 3dMEMA executable had a date of July 7, 2014
I ran the command with
-groups Subjects Controls
and
-groups Controls Subjects
In both cases I get the identical results for the T-map. The only difference is that the label for sub-briks 4 and 5 have the labeled switched. In both cases the beta values and t-maps for
by
vmagnotta
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AFNI Message Board
I can make this chnage, and will for this pass of the analysis. However, this will result in the label for the difference images to be incorrect (i.e. Controls-Subjects) for sub-briks 4 and 5.
by
vmagnotta
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AFNI Message Board
Here is the tests that I have run. I am summarizing the afni commands to help with clarity.
3dMEMA -groups Controls Subjects -mask mask_group+tlrc \
-set Subjects \
Subject1 Subject1_REML+tlrc'' Subject1_REML+tlrc'' \
Subject2 Subject2_REML+tlrc'' Subject2_REML+tlrc'' \
Subject3 Subject3_REML+tlrc'' Subject3_REML+tlrc'' \
by
vmagnotta
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AFNI Message Board
It appears that the labeling of groups from 3dMEMA is reversing the order of the groups. I had previous had two groups specified via the -groups option (groupA groupB) and the result was labeled as A-B. However, recent versions seem to label the results as B-A and the labeling for the individual group results also appear to have the wrong labels. I am running the following AFNI version
afni -v
by
vmagnotta
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AFNI Message Board