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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February 19, 2020 01:19PM
Hello,

I have performed a seed-based analysis in young and aged monkeys and have the resulting t-maps for each individual monkey as well as group t-maps t-tested against 0. I wanted to look at the variance between individual aged monkeys and the group t-map for young monkeys to plot the variance against behavioral score to see whether there is a correlation between greater variance (from young) and worse performance. I thought using a dice coefficient would work but based on the message board, I am thinking this is mostly for overlap of binary masks and not necessarily t-stats. If this is not the correct program, perhaps you can recommend something?

When I run @DiceMetric (@DiceMetric -base young_tmap+tlrc -dsets old_1_tmap+tlrc old_2_tmap+tlrc... ), i get a .1D file for each of the 18 monkeys but it doesn't contain any information:

#cl #dice(PATH/SUB/SUB_clust_1_blur3.nii.gz VS PATH/young_clust_1_all_map)
#Labels:

I am not sure what the aib.1D file output is but that looks like this:

# Mean_1 NZcount_1 Mean_2 NZcount_2 Mean_3 NZcount_3 Mean_4 NZcount_4 Mean_5 NZcount_5 Mean_6 NZcount_6 Mean_7 NZcount_7 Mean_8 NZcount_8 Mean_9 NZcount_9 Mean_10 NZcount_10 Mean_11 NZcount_11 Mean_12 NZcount_12
#AFN_uijqgwRzaW4l5kXc9hZmZw.aib+tlrc 0[SetA_mean]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#AFN_uijqgwRzaW4l5kXc9hZmZw.aib+tlrc 1[SetA_Zscr]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#File Sub-brick
# Mean_1 NZcount_1 Mean_2 NZcount_2 Mean_3 NZcount_3 Mean_4 NZcount_4 Mean_5 NZcount_5 Mean_6 NZcount_6 Mean_7 NZcount_7 Mean_8 NZcount_8 Mean_9 NZcount_9 Mean_10 NZcount_10 Mean_11 NZcount_11 Mean_12 NZcount_12
#/NAS/1_Rapp_Unit/Ciana/Sharyn_fc_cb_results/young_clust_1_all_map+tlrc 0[SetA_mean]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#/NAS/1_Rapp_Unit/Ciana/Sharyn_fc_cb_results/young_clust_1_all_map+tlrc 1[SetA_Zscr]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
#File Sub-brick
# Mean_1 NZcount_1 Mean_2 NZcount_2 Mean_3 NZcount_3 Mean_4 NZcount_4 Mean_5 NZcount_5 Mean_6 NZcount_6 Mean_7 NZcount_7 Mean_8 NZcount_8 Mean_9 NZcount_9 Mean_10 NZcount_10 Mean_11 NZcount_11 Mean_12 NZcount_12
#/NAS/1_Rapp_Unit/Sharyn/NHP_aging/thelma/NEW_MASK_thelma_clust_1_blur3.nii.gz 0[clust_1_R]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

When I include the -save_diff option, I get an output dataset but no actual number to represent the coefficient.

I appreciate your help in advance.
Thanks!
Sharyn
Subject Author Posted

Dice metric/coefficient

sharyn February 19, 2020 01:19PM

Re: Dice metric/coefficient

Daniel Glen February 19, 2020 04:46PM

Re: Dice metric/coefficient

rick reynolds February 19, 2020 10:03PM