Hi FreeSurfer,

I am trying to run Glm for a group comparison analysis 

I ran the mris_prepoc and mri_surf2surf and it completed without error. However, when I run mri_glmfit it gives me the following error:



gdfReadHeader: reading comp_groups.fsgd
INFO: ignoring tag Variable 
ERROR: gdfReadV1: Input line 1, subjid = Cont_FreeSurf_BMAMDCONTROL20
       Found 1 variables, expected. 0 
FSGDF Format Error: file = comp_groups.fsgd, tag=Input



The "comp_groups.fsgd" file was constructed in line with the FreeSurfer rules...

For instance,

GroupDescriptorFile 1				
Title Lista_Controles_y_Pacientes				
Class Home_Control 
Class Home_SC 

Class Dona_Control
Class Dona_SC 				
Variable                                               Age 
Input   Cont_FreeSurf_BMAMDCONTROL20    Home_Control    27 
Input   Cont_FreeSurf_BMAMGCONTROL27    Dona_Control    38 

Input   Cont_FreeSurf_BMAMMCONTROL43    Home_SC         46 
Input   Cont_FreeSurf_BMAMMCONTROL5     Dona_SC         28 
...


Is there any problem with this format?

The data corresponding to each subject is locate inside the $SUBJECTS_DIR directory (i.e., $SUBJECTS_DIR/Cont_FreeSurf_BMAMDCONTROL20) 


Regards,

Erick