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

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B. Douglas Ward
February 03, 2003 11:01AM

Hello Jim:

I've probably asked this question before:

Why are you using 3dDeconvolve on "data that's been normalized and resampled
to +tlrc."?

If your Orig voxels are 4x4x4, then converting to Tlrc 1x1x1 means an increase
in processing time (not to mention memory requirements) by a factor of 64.
I don't understand the reason for doing this.

However, to answer your question: All of the 3dDeconvolve source code is
written in C. Probably most of the real work that is done by 3dDeconvolve
occurs in the matrix arithmetic routines contained in file matrix.c.

Doug Ward
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Subject Author Posted

Compiling AFNI to use AltiVec

Jim Eliassen January 31, 2003 09:41AM

Re: Compiling AFNI to use AltiVec

bob cox February 02, 2003 01:55PM

Re: Compiling AFNI to use AltiVec

Jim Eliassen February 03, 2003 10:23AM

Re: Compiling AFNI to use AltiVec

B. Douglas Ward February 03, 2003 11:01AM

Re: Compiling AFNI to use AltiVec

Jim Eliassen February 03, 2003 03:45PM