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 10, 2003 10:57AM
Starting with a timeseries of EPI data (all positive values)
I used the following 3dMerge line to blur the timeseries data:

3dmerge -doall -prefix $name.MTL.all.blur -1blur_rms 4 $name.MTL.all+orig.HEAD

For one of my subjects this line produces a blurred timeseries with negative values.
How can I get a negative value when all of the values in $name.MTL.all+orig.HEAD
are positive?

PSFB

p.s. another pitiful "quick question" from a neuroscientist.
Subject Author Posted

Our old friend 3dMerge creates negatives

PSFB January 10, 2003 10:57AM

Re: Our old friend 3dMerge creates negatives

bob cox January 10, 2003 01:04PM

Re: Our old friend 3dMerge creates negatives

PSFB January 10, 2003 02:45PM