afni proc warning "Input dataset is not 3D+time; assuming TR=1.0

AFNI Message Board
1

What does this warning mean–as part of afni_proc.py script: “WARNING: Input dataset is not 3D+time; assuming TR=1.0”

Pasting bigger chunk of output: ++ 3dTstat: AFNI version=AFNI_17.2.02 (Jul 10 2017) [64-bit]
++ Authored by: KR Hammett & RW Cox
*+ WARNING: Input dataset is not 3D+time; assuming TR=1.0
echo average errts FWHM blurs: 8.82189 8.99374 8.18736 8.66061
average errts FWHM blurs: 8.82189 8.99374 8.18736 8.66061
echo 8.82189 8.99374 8.18736 8.66061 # errts FWHM blur estimates
set blurs = ( 3dTstat -mean -prefix - blur.errts.1D'{1..$(2)}'\' )
3dTstat -mean -prefix - blur.errts.1D{1…$(2)}’
++ 3dTstat: AFNI version=AFNI_17.2.02 (Jul 10 2017) [64-bit]
++ Authored by: KR Hammett & RW Cox
*+ WARNING: Input dataset is not 3D+time; assuming TR=1.0
echo average errts ACF blurs: 0.413134 5.09167 12.8729 14.0256
average errts ACF blurs: 0.413134 5.09167 12.8729 14.0256
echo 0.413134 5.09167 12.8729 14.0256 # errts ACF blur estimates
mkdir files_ClustSim
set params = ( grep ACF blur_est.$subj.1D | tail -n 1 )
grep ACF blur_est.s8076.chat.1D
tail -n 1

Thanks!

-Dan

2

Hi Dan,

The command that produces that warning is:

3dTstat -mean -prefix - blur.errts.1D{1…$(2)}’

So 3dTstat sees the blur.errts.1D{1…$(2)} data as a time series,
but there is no TR attached to it, and it whines a little. So it’s
okay. There may be other similar commands in the proc script.

  • rick
3

Thanks for fast reply!

So–it’s an ignorable warning?

4

Yes, it is an expected warning which can be ignored
(that warning will appear every time).

We know that the blur estimates should not come with
a real time axis, 3dTstat does not. Well, it does not
even know they are blur estimates.

  • rick