Hi,
I’ve been having trouble processing the SEM script from this website: https://sscc.nimh.nih.gov/sscc/gangc/PathAna.html (It’s called tcsh script on the website) using my own data. Every time I run the script, I continue to get these error messages:
++ 3dTstat: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ Authored by: KR Hammett & RW Cox
*+ WARNING: Input dataset has 1 sub-brick ==> -tdiff is turned off
*+ WARNING: Input dataset is not 3D+time; assuming TR=1.0
++ Output dataset ./SEM_resvar_roi0001.1D
++ 3dMean: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ 3dTstat: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ Authored by: KR Hammett & RW Cox
*+ WARNING: Input dataset has 1 sub-brick ==> -tdiff is turned off
*+ WARNING: Input dataset is not 3D+time; assuming TR=1.0
++ Output dataset ./SEM_resvar_roi0002.1D
++ 3dMean: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ 3dTstat: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ Authored by: KR Hammett & RW Cox
*+ WARNING: Input dataset is not 3D+time; assuming TR=1.0
++ Output dataset ./SEM_DF.1D
Because of this error, the 1dSEM code is not able to execute successfully. And I get the following error message:
++ 1dSEM: AFNI version=AFNI_17.2.03 (Jul 20 2017) [64-bit]
++ Authored by: Daniel Glen, Gang Chen
** FATAL ERROR: Need to specify all three 1D files for theta,C,psi and specify DF
My input data consists of two subject files, each with two columns representing ROI time series. Also, I created a MinModel.1D file that consists of a matrix for the model search option of 1dSEM.
Thank you in advance to whomever can help! I’m pretty new, so any advice will help.
SN