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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January 21, 2004 11:23AM

Hi,

I need to look at the negative voxels in my data, but when I multiply my EPI mask by the FIM data, using 3dcalc, I loose all of the negative values. My command is this....
3dcalc -a ABCD_Mask+orig -b ABCD_FIM+orig -prefix ABCD_Masked_FIM -expr "a*b". Is there a way to keep the negative values and get a masked FIM?

Thank you

Diana Krenz
Subject Author Posted

Viewing Negative Voxels with 3dcalc

Diana Krenz January 21, 2004 11:23AM

Re: Viewing Negative Voxels with 3dcalc

Diana Krenz January 21, 2004 12:19PM

Re: Viewing Negative Voxels with 3dcalc

rick reynolds January 21, 2004 12:20PM

Re: Viewing Negative Voxels with 3dcalc

Diana Krenz January 21, 2004 12:32PM