i'm not able to replicate this error you are seeing. to attempt to replicate, i used the 40 subjects included in our tutorial, loaded into qdec, then clicked 'Generate Stats Data Tables', then selected 'aseg.volume' in Stats Data Import, then selected IntraCorticalVol (which is eTIV) and 'add selections to Data Table', then selected IntraCorticalVol as the continuous covariate in the design tab. the analysis completed successfully.
which version of freesurfer are you using?
n.
On Tue, 2011-10-18 at 04:27 -0400, dolphinede@aol.com wrote:
Dear FreeSurfer experts,
my idea was to put the eTIV as a variable in qdec. I have put this in my qdec.table.dat and when I run qdec and choose eTIV as variable I get the following error and qdec closes some seconds later automatically:
Creating output directory /Users/dolphinede/Desktop/Probanden/qdec/Untitled Loading y from /Users/dolphinede/Desktop/Probanden/qdec/Untitled/y.mgh INFO: gd2mtx_method is dods Saving design matrix to /Users/dolphinede/Desktop/Probanden/qdec/Untitled/Xg.dat Normalized matrix condition is 389.695 Matrix condition is 1e+08 Found 148151 points in label. Pruning voxels by thr: 0.000000 Found 148142 voxels in mask Saving mask to /Users/dolphinede/Desktop/Probanden/qdec/Untitled/mask.mgh Reshaping mriglm->mask... search space = 73700.662359 DOF = 77 Starting fit and test Fit completed in 0.0607667 minutes Computing spatial AR1 on surface Residual: ar1mn=0.995148, ar1std=0.005328, gstd=5.802773, fwhm=13.664487 Writing results lh-Avg-Intercept-thickness maxvox sig=35.9893 F=546.618 at index 1515 0 0 seed=1319335878 lh-Avg-thickness-eTIV-Cor maxvox sig=6.48644 F=31.2833 at index 51144 0 0 seed=1319335878 mri_glmfit done ninputs = 2 Checking inputs nframestot = 2 Allocing output Done allocing nframes = 2 Writing to /Users/dolphinede/Desktop/Probanden/qdec/Untitled/contrasts.sig.mgh reading colortable from annotation file... colortable with 36 entries read (originally /autofs/space/terrier_001/users/nicks/freesurfer/average/colortable_desikan_killiany.txt) reading colortable from annotation file... colortable with 36 entries read (originally /autofs/space/terrier_001/users/nicks/freesurfer/average/colortable_desikan_killiany.txt) gdfReadHeader: reading /Users/dolphinede/Desktop/Probanden/qdec/Untitled/y.fsgd INFO: ignoring tag Creator INFO: ignoring tag SUBJECTS_DIR INFO: ignoring tag SynthSeed INFO: NOT demeaning continuous variables Continuous Variable Means (all subjects) 0 eTIV 1.45233e+06 147517 Class Means of each Continuous Variable 1 Main 1452332.4051 MatrixMultiply: m1 is null!
No such file or directory
I have no idea what is wrong.
Best regards
Daniel Klein
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