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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October 21, 2021 07:25AM
You do not need the -b variable:

for bash: 3dcalc -a betaCoefficients.nii.gz -b -expr 'a/$( cat referneceValue.1D)' >normalized betas.nii.gz
for tcsh or bash: 3dcalc -a betaCoefficients.nii.gz -b -expr 'a/`cat referneceValue.1D`' >normalized betas.nii.gz

This assumes that there is one and only one properly formatted number in referneceValue.1D
Subject Author Posted

how to divide each voxel in a 3d dataset by one number which is written to a file

carolin31 October 20, 2021 08:48PM

Re: how to divide each voxel in a 3d dataset by one number which is written to a file

Colm Connolly October 21, 2021 07:25AM

Re: how to divide each voxel in a 3d dataset by one number which is written to a file

rick reynolds October 21, 2021 09:03AM

Re: how to divide each voxel in a 3d dataset by one number which is written to a file

carolin31 October 22, 2021 01:10AM