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
November 06, 2009 05:27PM
As a quick work-around, you can use 3dBrickStat to compute a sum. 3dBrickStat computes simple statistics over whole datasets, but individual sub-bricks can be specified as usual.

3dBrickStat -sum -mask mask+orig -dset+orig'[0]'

You could also multiply by some large number to make the means higher and then correct for it with ccalc which does allow you to specify the precision output format. You will probably also want to be careful if you are dealing with very small numbers in a dataset with other larger numbers to use floating point format for your data rather than short integers.
Subject Author Posted

3dROIstats sum

Stathis October 15, 2009 06:23PM

Re: 3dROIstats sum

bob cox October 16, 2009 08:53AM

Re: 3dROIstats sum

Stathis November 06, 2009 03:37PM

Re: 3dROIstats sum

Daniel Glen November 06, 2009 05:27PM

Re: 3dROIstats sum

Ziad Saad November 06, 2009 10:23PM

Re: 3dROIstats sum

ziad November 10, 2009 10:24AM

Re: 3dROIstats sum

Stathis November 10, 2009 09:24PM