External Email - Use Caution Hello Freesurfer Experts!
I met the mri_glmfit error: matrix is ill-conditioned or badly scaled, condno
= 1e+08.I am trying to run a 8 group 3 variables analysis: with diagnosis being
my
variable of interest and trying to regress out the effects of
gender,background,age,education and seizure. 1. Command line:
mris_preproc --fsgd qdec/group.fsgd --cache-in thickness.fwhm10.fsaverage
--target fsaverage --hemi lh --out lh.thickness.fwhm10.groups.mgh
mri_glmfit --y lh.thickness.fwhm10.groups.mgh --fsgd group.fsgd dods --C
Difference.group.mtx --surf fsaverage lh --cortex --glmdir
fwhm10.thickness.glmdir
2. The FSGD file (see attached)
3. And the design matrix:
1 1 1 1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (or
see attached)
I encounter this error. I have no idea how to proceed.Is all this because I
have too many covariates?
I am looking forward to your response!
Thanks,
Kan
Difference.group.mtx
Description: Binary data
group.fsgd
Description: Binary data
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