3dttest++ fails with -Clustsim option

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1

Hi I’m running

I’m trying to run 3dttest++ on a group data and when I don’t use -Clustsim option, it runs without any problems, but with -Clustsim option it gives the following error. I would appreciate if you can help me understanding the problem, since I couldn’t figure it out.

Thank you

The command I run is the following:

!dttest++ -prefix ttest_LeftEar_GLM.mo1.rvhr1.WC0mean.gs0_norm_beta -setA bold1_stim1_R1_tcat_topup_zcutup_ts_aw_6mm_GLM.mo1.rvhr1.WC0mean.gs0_norm_Fstats_cens+tlrc’[3]’ bold1_stim1_R1_tcat_topup_zcutup_ts_aw_6mm_GLM.mo1.rvhr1.WC0mean.gs0_norm_Fstats_cens+tlrc’[3]’ bold1_stim1_R1_tcat_topup_zcutup_ts_aw_6mm_GLM.mo1.rvhr1.WC0mean.gs0_norm_Fstats_cens+tlrc’[3]’ bold1_stim1_R1_tcat_topup_zcutup_ts_aw_6mm_GLM.mo1.rvhr1.WC0mean.gs0_norm_Fstats_cens+tlrc’[3]’ bold1_stim1_R1_tcat_topup_zcutup_ts_aw_6mm_GLM.mo1.rvhr1.WC0mean.gs0_norm_Fstats_cens+tlrc’[3]’ -Clustsim

And it gives the following error:

++ 3dttest++: AFNI version=AFNI_17.2.13 (Sep 12 2017) [64-bit]
++ Authored by: Zhark++
++ option -setA :: processing as SHORT form (all values are datasets)
++ Number of -Clustsim threads set to 8

  • Default clustsim prefix set to ‘TT.TlZNOpZO49A’
    e[7m** FATAL ERROR:e[0m You can’t use -Clustsim with nval_AAA+nval_BBB=5 < 14
    ** Program compile date = Sep 12 2017
2

Sadly, clustsim cannot be used with less than 14 subjects (or rather, 14 sets of data). Per the help on down the page:


 ++ If you have less than 14 datasets total (setA & setB combined),
                 this option will not work! (There aren't enough random subsets.)
               ** And it will not work with '-singletonA'.

There are also some details in there about the min per group I believe - if that is important to you as well.

3

Thank you very much for your explanation. I missed that information.