I have a single factor with three levels (diagnosis) and trying to setup qdec,
but I get the following message - I have a .levels file with all 3 groups
specified - the contrasts are not getting generated automatically.
Data table loading completed successfully.
SUBJECTS_DIR is '/Volumes/FREECOM/Applications/freesurfer/subjects/conn'
ERROR: QdecGlmDesign::GenerateContrasts: factor 1 must have 2 levels
ninputs = 87
Checking inputs
nframestot = 87
Allocing output
Done allocing
nframes = 87
Writing to
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/qdec/Untitled/y.mgh
gdfReadHeader: reading
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/qdec/Untitled/qdec.fsgd
INFO: gd2mtx_method is dods
Reading source surface
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/fsaverage/surf/lh.white
ERROR: no contrasts specified.
Error in Analyze: command failed: mri_glmfit --y
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/qdec/Untitled/y.mgh
--fsgd
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/qdec/Untitled/qdec.fsgd
dods --glmdir
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/qdec/Untitled --surf
fsaverage lh --label
/Volumes/FREECOM/Applications/freesurfer/subjects/conn/fsaverage/label/lh.aparc.label
Any help?
Thanks
Lena
________________________________
Lena Palaniyappan
Clinical Lecturer & Honorary StR | Division of Psychiatry ( University of
Nottingham)
South Block 'A' floor| Queens Medical Centre | Nottingham | NG7 2UH
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