It usually means that the number of subjects in the input is less (10 less) than the number of regressors. It looks like you have about 14 input subjects and 24=6*4 regressors. You need to add subjects or remove regressors (ie, classes or covariates) doug
On 9/18/13 11:41 AM, Robert Schulz wrote: > Hello, > > I am using mri_glmfit to perform a correlation analysis between some > surface-based DTI measures and a behavioural outcome (grip), aiming to > correct for scannertyp (C,I,W), handedness (R,L) as discrete variables and > age (AGE) and duration (Mo) as continuous covariates. Please find the fsgd > file, the contrast file and the calculated Xg down below. > However, I get the follow error: > > DOF = -10 > ERROR: DOF = -10 (the complete output is attached) > > I would be grateful if somebody could help. I already tried it with demeaned > data, z-transformed data, it doesn't help. > > Thank you for your help, > > Robert > > > ======================================== > > fsgd file: > GroupDescriptorFile 1 > Title OSGM > Class CR > Class CL > Class WL > Class WR > Class IR > Class IL > Variables Age Mo Grip > Input c02 CR 52 85 0.250 > Input c04 CR 71 27 0.652 > Input c05 CL 63 12 0.788 > Input c06 WL 77 26 0.438 > Input c07 WR 61 13 0.717 > Input c10 IR 68 9 0.730 > Input c11 IL 63 13 0.934 > Input c12 IL 29 12 1.170 > Input c13 IR 46 12 0.964 > Input c14 IR 75 14 0.655 > Input c15 IL 68 13 1.098 > Input c16 IR 69 12 1.028 > Input c18 WL 40 20 0.698 > Input c19 WL 53 13 0.547 > > contrast file: > 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 > > design matrix: > > +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +52.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +85.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.25000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +71.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +27.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.65200 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +63.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +12.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.78800 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +77.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +26.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.43800 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +61.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +13.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.71700 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +68.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +9.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.73000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +63.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +13.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.93400 > +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +29.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +12.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.17000 > +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +46.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +12.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.96400 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +75.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +14.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.65500 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +68.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +13.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.09800 > +0.00000 +0.00000 +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +69.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +12.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +1.02800 +0.00000 > +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +40.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +20.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.69800 +0.00000 +0.00000 +0.00000 > +0.00000 +0.00000 +1.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 > +53.00000 +0.00000 +0.00000 +0.00000 +0.00000 +0.00000 +13.00000 +0.00000 > +0.00000 +0.00000 +0.00000 +0.00000 +0.54700 +0.00000 +0.00000 +0.00000 > > output: > > gdfReadHeader: reading > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/glmout/corr.fsgd > INFO: DeMeanFlag keyword not found, DeMeaning will NOT be done. > Continuous Variable Means (all subjects) > 0 Age 59.6429 13.4462 > 1 Mo 20.0714 18.7444 > 2 Grip 0.762071 0.248599 > Class Means of each Continuous Variable > 1 CR 61.5000 56.0000 0.4510 > 2 CL 63.0000 12.0000 0.7880 > 3 WL 56.6667 19.6667 0.5610 > 4 WR 61.0000 13.0000 0.7170 > 5 IR 64.5000 11.7500 0.8442 > 6 IL 53.3333 12.6667 1.0673 > INFO: gd2mtx_method is dods > Reading source surface > /home/schulz/freesurfer/subjects/premotorstroke/fsaverage/surf/lh.white > Number of vertices 163842 > Number of faces 327680 > Total area 65416.648438 > AvgVtxArea 0.399267 > AvgVtxDist 0.721953 > StdVtxDist 0.195470 > $Id: mri_glmfit.c,v 1.196.2.6 2011/05/05 20:54:25 greve Exp $ > cwd /home/schulz/dti/premotorstroke/02 > cmdline mri_glmfit --glmdir > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l --y > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/l_average_all_smooth.mgh > --fsgd > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/glmout/corr.fsgd > --C > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/glmout/corr.mtx > --surf fsaverage lh --cortex > sysname Linux > hostname BINS-Linux1 > machine x86_64 > user schulz > FixVertexAreaFlag = 1 > UseMaskWithSmoothing 1 > OneSampleGroupMean 0 > y /home/schulz/dti/premotorstroke/wm-probe/fs_no3/l_average_all_smooth.mgh > logyflag 0 > usedti 0 > FSGD > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/glmout/corr.fsgd > labelmask > /home/schulz/freesurfer/subjects/premotorstroke/fsaverage/label/lh.cortex.label > maskinv 0 > glmdir /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l > IllCondOK 0 > ReScaleX 1 > DoFFx 0 > Creating output directory > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l > Loading y from > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/l_average_all_smooth.mgh > INFO: gd2mtx_method is dods > Saving design matrix to > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/Xg.dat > Normalized matrix condition is 1420.61 > Matrix condition is 954196 > Found 149955 points in label. > Pruning voxels by thr: 0.000000 > Found 136331 voxels in mask > Saving mask to > /home/schulz/dti/premotorstroke/wm-probe/fs_no3/glmout_corr_l/mask.mgh > Reshaping mriglm->mask... > search space = 67992.449783 > DOF = -10 > ERROR: DOF = -10 > > > > -- > > Besuchen Sie uns auf: www.uke.de > _____________________________________________________________________ > > Universitätsklinikum Hamburg-Eppendorf; Körperschaft des öffentlichen Rechts; > Gerichtsstand: Hamburg > Vorstandsmitglieder: Prof. Dr. Martin Zeitz (Vorsitzender), Prof. Dr. Dr. Uwe > Koch-Gromus, Joachim Prölß, Rainer Schoppik > _____________________________________________________________________ > > SAVE PAPER - THINK BEFORE 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