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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