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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July 25, 2017 04:20PM
Again, Daniel,

Perhaps I am using an old version of AFNI.

The command does not work with my computer. "3dcalc -a DSET1 -b DSET2 -expr 'a+2b' -prefix COMBO_1and2", the error alarm is below.
PARSER error 5: Expected an operator
A+2B
....#
** FATAL ERROR: illegal expression!

but it works if I change the -expr 'a+2b' to -expr 'step(a)+2*step(b)'. Does it mean that there is no expression of 'a+2b' , but it should be written as 'step(a)+2*step(b)? What is the reason reason?

Thanks for your time,
J
Subject Author Posted

image display issue Attachments

Juan July 17, 2017 01:44AM

Re: image display issue

ptaylor July 17, 2017 06:35AM

Re: image display issue

Juan July 17, 2017 08:01AM

Re: image display issue

Daniel Glen July 17, 2017 10:52AM

Re: image display issue

Juan July 18, 2017 12:20AM

Re: image display issue

Juan July 25, 2017 04:20PM

Re: image display issue

ptaylor July 25, 2017 04:23PM

Re: image display issue

Juan July 25, 2017 06:26PM

Re: image display issue

ptaylor July 25, 2017 07:06PM

Re: image display issue

RWCox July 17, 2017 11:16AM