Re: [R] singular information matrix in lrm.fit

Prof Brian Ripley wrote: I believe lrm has a criterion appropriate to single-precision calculations (as S-PLUS used to use). Try reducing 'tol' from its default of 1e-7. But your design matrix *is* near singular kappa(cbind(1,x)) [1] 557390.5 so try centring/scaling your variables. Than

Re: [R] singular information matrix in lrm.fit

I believe lrm has a criterion appropriate to single-precision calculations (as S-PLUS used to use). Try reducing 'tol' from its default of 1e-7. But your design matrix *is* near singular kappa(cbind(1,x)) [1] 557390.5 so try centring/scaling your variables. On Sun, 12 Oct 2008, Gad Abraham

Re: [R] Singular information matrix in lrm.fit

On Thu, 9 Oct 2008, useR wrote: Hi R helpers, I'm fitting large number of single factor logistic regression models as a way to immediatly discard factor which are insignificant. Everything works fine expect that for some factors I get error message "Singular information matrix in lrm.fit" whi