Hi FS experts,

I am trying to run OSGM analysis between two groups using mri_glmfit as follow :

mri_glmfit --y lh_10mm.mgh --fsgd fsgd.dat --glmdir lh_10mm --surf fsaverage lh --osgm 

 

it keep returning as:

ERROR: DOF = 0
 

my FSGD is as follow 

GroupDescriptorFile 1
Title OSGM
Class group1
Class group2

Input 001 group1

Input 002 group1

Input 003 group1

Input 004  group1

.

.

.
Input C001 group2

Input C002 group2

Input C003 group2

Input C004 group2

.

.

.

 

please what I am doing wrong?!