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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March 22, 2021 11:05PM
Hi, Ellen-

For diffusion-based matrices (*.grid files, from 3dTrackID), each matrix element should be >0 if a tract was found, and only 0 if a tract was not found. It would make sense that those could then be treated as NA in R.

For FMRI-based matrices (*.netcc files, from 3dNetCorr), it is *possible* that a matrix element could be exactly zero from correlation (though, veeery small but nonzero is more likely for cases of being highly uncorrelated). So I think you would basically always want all FMRI elements, even the zeros.

--pt
Subject Author Posted

Using fat_mat_tableize.py for .grid output

eji March 17, 2021 11:22AM

Re: Using fat_mat_tableize.py for .grid output

ptaylor March 18, 2021 09:29PM

Re: Using fat_mat_tableize.py for .grid output

eji March 22, 2021 12:04PM

Re: Using fat_mat_tableize.py for .grid output

ptaylor March 22, 2021 02:17PM

Re: Using fat_mat_tableize.py for .grid output

eji March 22, 2021 02:59PM

Re: Using fat_mat_tableize.py for .grid output

ptaylor March 22, 2021 11:05PM

Re: Using fat_mat_tableize.py for .grid output

eji March 23, 2021 02:59AM

Re: Using fat_mat_tableize.py for .grid output

ptaylor March 23, 2021 10:12AM