External Email - Use Caution Dear Freesurfer users,
I was trying yo use mri_glmfit-sim after using mri_glmfit that run successfully
and I encounter this error:
ERROR: matrix is ill-conditioned or badly scaled, condno = 1e+08
--------------------------------
-------- ERROR: READ THIS -----------------
--vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv-----
Possible problem with experimental design:
Check for duplicate entries and/or lack of range of
continuous variables within a class.
If you seek help with this problem, make sure to send:
1. Your command line:
mri_glmfit --C
/bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg16_syn_bbr.FA_Avg.corr_g_glmdir/tmp.mri_glmfit-sim-29440/contrast_moca_groups.mtx
--sim perm 1000 1.5
/bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg16_syn_b
br.FA_Avg.corr_g_glmdir/csd/perm.th15.abs.j001 --sim-sign abs --fwhm 0 --fsgd
/bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg16_syn_bbr.FA_Avg.corr_g_glmdir/y.fsgd
dods --mask /bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg
16_syn_bbr.FA_Avg.corr_g_glmdir/mask.mgh --y
/bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg16_syn_bbr.FA_Avg.corr_g_glmdir/eres.mgh
--perm-force --seed 1669778971
2. The terminal output of this program (ie, everything it prints to the
screen)
3. The FSGD file
(/bcbl/home/public/PD_ANALYSIS/FREESURFER_PPMI/stats/lh.atr.avg16_syn_bbr.FA_Avg.corr_g_glmdir/y.fsgd)
4. The design matrix (null)/Xg.dat
Attempting to diagnose further
SumSq: Min=1.455099 (col 24), Max=8.657582 (col 23)
... could not determine the cause of the problem
--^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^----
Seems like there is a problem with the condition matrix, but I do not
understand why. Could you help me with this problem? I attached the contrast
and fsgd files
Best,
Vicente Ferrer
Predoctoral Researcher BCBL
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contrast_moca_groups.mtx
Description: Binary data
glm_covariates_moca_groups.fsgd
Description: Binary data
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