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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lzhyoung
October 31, 2017 04:12AM
Hi all,
I am a little confused about the warning message "WARNING: Went over sparsity goal 718261 by 101, with a resolution of 0.000202".
The number in red was different among subjects.
Does it matter in group analysis because of different number of edges used to compute degreecentrality?

---------------------------- The script I used ----------------------------------------------------
3dDegreeCentrality -prefix ${output}/${sid}_DC \
-sparsity 1 \
-mask $GMmask \
${funcfile}

---------------------------- The output of the function ------------------------------------------
++ 3dDegreeCentrality: AFNI version=AFNI_17.2.17 (Oct 4 2017) [64-bit]
++ 11986 voxels in -mask dataset
++ vectim-izing input dataset
++ Calculating degree centrality with threshold = 0.000000 and sparsity = 1.00% (718261)
++ 4 OpenMP threads started
Looping:0123456789,0123456789,0123456789,0123456789,0123456789,.
++ AFNI_OMP finished
++ Found 798373 (1.11%) correlations above threshold (0.361800)
+ creating output dataset in memory
++ Adding 173649 nodes from histogram to histogram2
*+ WARNING: Went over sparsity goal 718261 by 101, with a resolution of 0.000202
++ Done..
++ Writing output dataset to disk [1,050,624 bytes]
++
======
== Mem Stats (Fin): Running 0B, Total 231,194,514B, Peak 198,900,802B
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warning message in 3dDegreeCentrality

lzhyoung October 31, 2017 04:12AM