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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Daniel Glen
January 04, 2017 04:12PM
According to their documentation, you are limited to 5000 voxels. 
ROIs
 must
 be
 formatted
 as
binary
 NIfTI
 (http://nifti.nimh.nih.gov)
 images

with
 1x1x1
 mm3 resolution,
 and
 the
 ROI
 must
 not
 extend
 across
 more
 than
 5000 voxels.

That's not a lot of voxels at anatomical resolution, but it may be useful at EPI data resolution. Consider resampling ROIs to a lower resolution with 3dfractionize or 3dresample. Also "3dAutobox -noclust" can be used to limit the dataset, even the zero voxels, to the smallest box that contains the ROI.
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Splitting ROI image

willsnyder January 02, 2017 12:28AM

Re: Splitting ROI image

ptaylor January 02, 2017 09:43AM

Re: Splitting ROI image

willsnyder January 02, 2017 10:30AM

Re: Splitting ROI image

Daniel Glen January 04, 2017 04:12PM