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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andim
March 06, 2019 01:33PM
Hello,

I am trying to extract two ROIs from activation clusters I get as a main effect and three ROIS from clusters I got from an interaction effect. I would then like to combine these two masks into a single combined masks (with the combined 5 ROIs).

So far, I've made the two separate masks (one from the main effect and one from the interaction) by using the "SaveMsk" option under "Rpt". I've called these "DTS_Clust-mask+tlrc.BRIK" and SBDDTS_Clust-mask+tlrc.BRIK, respectively. I know can combine the two masks using:

3dcalc -a 'DTS_Clust-mask+tlrc.BRIK' -b 'SBDDTS_Clust-mask+tlrc.BRIK' -expr 'step(a) +2*step(b)' -prefix mask_combined

I would like to track which ROI comes from the main effect, and which ROI comes from the interaction by naming each ROI.

So, how do I rename these ROIs so I can identify which belongs to which?

Thank you
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Subject Author Posted

Renaming ROIs in ROI extraction

andim March 06, 2019 01:33PM

Re: Renaming ROIs in ROI extraction

ptaylor March 07, 2019 05:49PM