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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July 30, 2019 08:05AM
Dear AFNI experts,

We would like to visualize our results with Cluster Explorer. It seems that it does not work if the output of 3dttest++ is z-score. I have tried to convert the z-score to t-score by using 3dcal with the following expression:
3dcalc -a TTEST_one_sample.nii -expr 'cdf2stat(stat2cdf(a,5,0,0,0),3,13,0,0)' -prefix TTEST_one_sample_tstat.nii

Although the function run, the output does not correspond to the t-stat.

Could you indicate me what is wrong in this expression?

Thanks a lot in advance.
Karel
Subject Author Posted

Convert from z-score to t-score

Karelo July 30, 2019 08:05AM

Re: Convert from z-score to t-score

rick reynolds July 30, 2019 11:37AM

Re: Convert from z-score to t-score

Karelo July 30, 2019 12:29PM

Re: Convert from z-score to t-score

Karelo July 30, 2019 12:39PM

Re: Convert from z-score to t-score

rick reynolds July 30, 2019 01:21PM

Re: Convert from z-score to t-score

Karelo August 05, 2019 10:10AM

Re: Convert from z-score to t-score

discoraj August 09, 2019 11:18AM