Can you send the matrix that it creates? On 12/02/2013 06:09 AM, Gabriel Gonzalez Escamilla wrote: > Dear Freesurfer experts, > > Sorry for the inconvenience but I posted this message last week, but I > did not receive any answer. I really need to keep going on with my > analyses. > > > I have runned the following command line: > mri_glmfit --surf PLI_MCI_sample7_avg lh --C > /root/trabajo/freesurfer/subjects/PLI_MCI_sample7_avg/stats_MRI_PET_Biomarkers/glm_files/contrast_withinE4_neg.mat > > --fsgd > /root/trabajo/freesurfer/subjects/PLI_MCI_sample7_avg/stats_MRI_PET_Biomarkers/glm_files/lh.cortex_AVGthickness_APOB_fsgd.txt > > dods --label > /root/trabajo/freesurfer/subjects/PLI_MCI_sample7_avg/label/lh.cortex.label > --y > /root/trabajo/freesurfer/subjects/PLI_MCI_sample7_avg/stats_MRI_PET_Biomarkers/lh.thickness_s12mm.mgh > > --no-prune --glmdir > /root/trabajo/freesurfer/subjects/PLI_MCI_sample7_avg/stats_MRI_PET_Biomarkers/resultsthickness_cortex_s12mm_BiomrkrsWithin/lh.cortex_AVGthickness_APOB_contrast_withinE4_neg/ > > > > which is always prompts the following error: > > -------------------------------- > ERROR: matrix is ill-conditioned or badly scaled, condno = 1.75146e+07 > -------------------------------- > Possible problem with experimental design > > > I'm sending attached the fsgd.txt and contras.mat files used in case > you need them > > > Does anyone knows what's wrong with my design? > > > Many thanks in advanced, > Gabriel. > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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