Hi Gang,
I'm getting the same error as Pheobe above using this matrix:
L_MT L_V4color L_fef L_ip L_it L_lpfc L_v1 R_MT R_V4color R_fef R_ip R_it R_lpfc R_v1
L_MT 0 0 NA NA 0 NA 0 NA 0 NA NA 0 NA 0
L_V4color 0 0 0 0 NA NA 0 0 NA 0 0 NA NA 0
L_fef 0 0 0 0 0 NA 0 0 0 NA 0 0 NA 0
L_ip 0 0 NA 0 0 NA 0 0 0 NA NA 0 NA 0
L_it 0 0 0 0 0 NA 0 0 0 0 0 NA NA 0
L_lpfc 0 0 0 0 0 0 0 0 0 0 0 0 NA 0
L_v1 NA NA NA NA NA NA 0 NA NA NA NA NA NA NA
R_MT NA 0 NA NA 0 NA 0 0 0 NA NA 0 NA 0
R_V4color 0 NA 0 0 NA NA 0 0 0 0 0 NA NA 0
R_fef 0 0 NA 0 0 NA 0 0 0 0 0 0 NA 0
R_ip 0 0 NA NA 0 NA 0 0 0 NA 0 0 NA 0
R_it 0 0 0 0 NA NA 0 0 0 0 0 0 NA 0
R_lpfc 0 0 0 0 0 NA 0 0 0 0 0 0 0 0
R_v1 NA NA NA NA NA NA NA NA NA NA NA NA NA 0
The following two options are for numerical algorithm. Choose first
'Iterative', switch to 'Direct' if the iterative approach fails.
Error in solve.default(infgamma) :
Lapack routine dgesv: system is exactly singular: U[84,84] = 0
I have specified fewer than the 91 max free parameters...is this a valid matrix?
Best,
Andrew
