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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bmetony
January 16, 2015 02:48PM
so i am running a simple one-simple ttest on my data but i noticed that only the first brick of the output gets saved(tried nifti and afni brick format,all has one volume). then i checked the afni help , followed this example:
3dUndump -dimen 128 128 32 -prefix ZZ
3dcalc -a ZZ+orig -b '1D: 14@0' -expr 'gran(1,1)' -prefix ZZ_1.nii -datum float
3dcalc -a ZZ+orig -b '1D: 10@0' -expr 'gran(0,1)' -prefix ZZ_0.nii -datum float
3dttest++ -setA ZZ_1.nii -setB ZZ_0.nii -prefix ZZtest.nii -no1sam
echo '=== mean of mean estimates follows, should be about 1 ==='
3dBrickStat -mean ZZtest.nii'[0]'
echo '=== mean of t-statistics follows, should be about 2.50149 ==='
3dBrickStat -mean ZZtest.nii'[1]'
\rm ZZ*

still i am getting one brick which is the mean image of the input.

any idea what's going on?

the compile date is Aug 5, 2013. is this the problem?


Thanks,

Tony
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Subject Author Posted

3dttest++ only outputs one brickconfused smiley

bmetony January 16, 2015 02:48PM

Re: 3dttest++ only outputs one brickconfused smiley

gang January 20, 2015 04:38PM