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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Daniel Glen
October 27, 2021 12:30PM
I'm not sure of where you want to get to, but these are all interesting questions. Here are some suggestions:

1. Limit surface nodes for the distance with list. SurfDist lets you specify from-to pairs or just the "to-nodes". Limiting by Euclidean distance seems like a smart idea if they're too far away.

2. Limit surface nodes to a patch of a surface with SurfPatch.

3. Finding centers of ROIs on a surface. See Chris Rorden's Surf-Ice solution for this.
[github.com]
[afni.nimh.nih.gov]

I've attached an image of the centroids for the Schaefer-Yeo atlas for 400 parcels. Also see our updated Schaefer-Yeo atlases here:
https://afni.nimh.nih.gov/pub/dist/atlases/SchaeferYeo/afni_sydist_atlas_v1.0.tgz

https://afni.nimh.nih.gov/pub/dist/HBM2021/#:~:text=Schaefer-Yeo_AFNI_Atlas_OHBM2021_Poster.pdf

4. SurfLocalstat. Newer local statistics program for the surface where you set the geodesic distance to search around every node.

5. Extracting xyz coordinates for separate computation (like euclidean distance). SurfDist does euclidean too.
https://afni.nimh.nih.gov/afni/community/board/read.php?1,160172,160183#msg-160183



Edited 1 time(s). Last edit at 10/27/2021 01:27PM by Daniel Glen.
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Subject Author Posted

Suggestions on solving a problem with SurfDist

witherscp October 26, 2021 10:12AM

Re: Suggestions on solving a problem with SurfDist Attachments

Daniel Glen October 27, 2021 12:30PM