Hi AFNI experts,
I am trying to run a 3dMVM for the following model:
Group * Age * Emotion (3 within sub conditions) controlling for motion and sex.
I am getting the error:
"Reading input files: Done!
If the program hangs here for more than, for example, half an hour,
kill the process because the model specification or the GLT coding
is likely inappropriate.
Possible reasons: 0) Make sure that R packages afex and phia have been installed. See the 3dMVM help documentation for more details. 1) Inappropriate model specification with options -bsVars, -wsVars, or -qVars. Note that within-subject or repeated-measures variables have to be declared with -wsVars. 2) Incorrect specifications in general linear test coding with -gltCode. 3) Mistakes in data table. Check the data structure shown above, and verify whether there are any inconsistencies. 4) Inconsistent variable names which are case sensitive. For example, factor named Group in model specification and then listed as group in the table hader would cause grief for 3dMVM. 5) Not enough number of subjects. This may happen when there are two or more withi-subject factors. For example, a model with two within-subject factors with m and n levels respectively requires more than (m-1)*(n-1) subjects to be able to model the two-way interaction with the multivariate approach. ** Error: Quitting due to model test failure... There were 50 or more warnings (use warnings() to see the first 50)" However, I have checked and rechecked everything in those 5 possible reasons it would fail, and I cannot identify any problem! Any input would be helpful! I even got rid of my glhts to see if that was the issue. Here is my code: 3dMVM -prefix Matching_GroupxEmotionxAge -jobs 1 \ -bsVars "motion+Group*Age*emotion+sex" \ -wsVars "emotion" \ -SS_type 3 \ -qVars "motion,Age" \ -num_glt 0 \ -dataTable @3dMVM_data_table_N73_December_2016.txt \ here are the first few lines of my dataTable: Subj motion Group Age sex emotion InputFile \ SB001 19 COMP 114 male Angry /danl/SB/SB001/matching/task_June_2015/fsl_SB001/model/lev2_gPPI_oct_2016_proc.gfeat/cope5.feat/stats/cope1.nii.gz \ SB001 19 COMP 114 male Happy /danl/SB/SB001/matching/task_June_2015/fsl_SB001/model/lev2_gPPI_oct_2016_proc.gfeat/cope6.feat/stats/cope1.nii.gz \ SB001 19 COMP 114 male Neutral /danl/SB/SB001/matching/task_June_2015/fsl_SB001/model/lev2_gPPI_oct_2016_proc.gfeat/cope7.feat/stats/cope1.nii.gz \ Thanks! Michelle