3dttest++ vectors warning

AFNI Message Board
1

Hello,

I was wondering what the " XXXX vectors are constant" warning in 3dttest++ indicates? I’ve seen if before, but cannot find documentation on what exactly it means or if it is a serious issue over a certain number.

Thank you!
Lea

2

Hi Lea,

It suggests that all subjects are masked (constant zero)
at those voxels. If you are not specifying a mask to
3dttest++ (which is fine), it is common to see that warning.

  • rick
3

Hi Rick,

Ok awesome, thank you so much!

Lea