Dear FreeSurfer team, I apologize for posting this again.
I tried to run glm_fit to fit group membership. For this model, I have 3 diagnostic groups namely, HC, MCI, AD, and added lobar (Frontal, Parietal, Occipital, Temporal) WMH as the covariates. My contrasts are as follow: Group membership: 1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0; 0 1 -1 0 0 0 0 0 0 0 0 0 0 0 0 Frontal/Parietal/Occipital/Temporal MCI_HC: 0 0 0 -1 1 0 0 0 0 0 0 0 0 0 0 Frontal/Parietal/Occipital/Temporal MCI_AD: 0 0 0 -1 1 0 0 0 0 0 0 0 0 0 0 Frontal/Parietal/Occipital/Temporal AD_HC: 0 0 0 -1 0 1 0 0 0 0 0 0 0 0 0 However, I got the error message "MatrixReadTxt: could not scan value [1][1]; MATFILES: 0 x 0, type 0, imagf 0, name ' '; unsupported matlab format 0 (unknown). My command is: mri_glmfit --glmdir lh.thickness.regress.covariates.sm15.glmdir/group_membership --y ./lh.thickness.regress.convariates.sm15.glmdir/eres.mgh --X ./membership_group_all.mat --C ./membership_group.txt --C ./membership_Frontal.txt --C ./membership_MCI_HC_Frontal.txt --C ./membership_MCI_AD_Frontal.txt --C ./membership_AD_HC_Frontal.txt --C ./membership_Parietal.txt --C ./membership_MCI_HC_Parietal.txt --C ./membership_MCI_AD_Parietal.txt --C ./membership_AD_HC_Parietal.txt --C ./membership_Occipital.txt --C ./membership_MCI_HC_Occipital.txt --C ./membership_MCI_AD_Occipital.txt --C ./membership_AD_HC_Occipital.txt --C ./membership_Temporal.txt --C ./membership_MCI_HC_Temporal.txt --C ./membership_MCI_AD_Temporal.txt --C ./membership_AD_HC_Temporal.txt --surf fsaverage lh --cortex --fwhm 0 I am not sure what went wrong, any help will be great. Many thanks, Heidi
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