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

History of AFNI updates  

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Daniel Glen
January 30, 2008 05:11PM
If you are interested in a dataset with only a single value (only one ROI in the dataset), then one easy way to get the number of voxels is by using 3dBrickStat.

3dBrickStat -count -non-zero dset+orig
or
3dBrickStat -count -mask mask+orig dset+orig

Otherwise, 3dROIstats has an nzvoxels option for multiple ROIs to count the number of non-zero voxels for each mask value.

3dROIstats -nzvoxels -mask mask+orig dset+orig
Subject Author Posted

Volume of voxels in a mask

Carrie January 30, 2008 04:36PM

Re: Volume of voxels in a mask

Daniel Glen January 30, 2008 05:11PM

Re: Volume of voxels in a mask

Carrie February 06, 2008 10:41AM

Re: Volume of voxels in a mask

Daniel Glen February 06, 2008 12:40PM

Re: Volume of voxels in a mask

Ariel Kanevsky February 06, 2008 01:24PM

Re: Volume of voxels in a mask

Carrie February 11, 2008 12:25PM

Re: Volume of voxels in a mask

Daniel Glen February 11, 2008 01:37PM

Re: Volume of voxels in a mask

Carrie February 11, 2008 01:58PM

Re: Volume of voxels in a mask

Daniel Glen February 11, 2008 02:24PM