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Hello Freesurfer experts,
I am attempting to run the command mri_glmfit --y lh.RBS_ADRC_N0_control.10.mgh --fsgd RBS_ADRC_APOE_age22.fsgd dods --C APOE_ageINT.mtx --surf fsaverage lh --cortex --glmdir lh.RBS_ADRC_N0.glmdir
On this .fsgd file: “RBS_ADRC_APOE_age22.txt”
Using the following design matrix:
“lh.RBS_ADRC_N0.txt”
I am receiving the error message: -------------------------------- ERROR: matrix is ill-conditioned or badly scaled, condno = 1e+08 -------------------------------- Possible problem with experimental design: Check for duplicate entries and/or lack of range of continuous variables within a class.
I would appreciate your insights into what may be the likely cause of this error and apologize that the files are in text format. If need be, I can convert these to their proper formats.
misc information: Freesurfer 6.00 CentOS v7
Best, Curtis