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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RWCox
September 23, 2020 01:58PM
This type of output (.nii format) can be created with the -CLUSTSIM option (instead of -Clustsim), if you also set environment variable AFNI_TTEST_NIICSIM to "YES" -- e.g., run with the options 
3dttest++ -DAFNI_TTEST_NIICSIM=YES -CLUSTSIM ....
Note that the results in this file are the t-statistics converted to z-statistics ("scores"), as described under the '-toz' option in '3dttest++ -help'. And the betas are not output either, as described in option '-nomeans'. 3dClustSim and 3dXClustSim are concerned only with thresholding.

You won't get .nii files this way with the -ETAC option, since the 3dXClustSim program (which implements ETAC) requires data in the default compressed ".sdat" format. If necessary, I could write a "sdat->nii" converter program (the opposite already exists in program 3dtoXdataset), but I'd rather not, as that kind of task seems very tedious to me these days.
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Extract t-statistics in each permute in 3dttest++

yierge September 16, 2020 01:51PM

Re: Extract t-statistics in each permute in 3dttest++

RWCox September 23, 2020 01:58PM