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2012 Aug 14
1
Random effects in gam (mgcv 1.7-19)
...e mgcv package, I have random effects in my model (bs="re") this has worked fine, but after I updated the mgcv package to version 1.7-19 I recive an error message when I run the model. > fit1<-gam(IV~s(RUTE,bs="re")+s(T13)+s(H40)+factor(AAR)+s(V3)+s(G1)+s(H1)+s(V1)+factor(LEDD),data=data5,method="ML") > summary.gam(fit1) Error in mroot(Ve[ind, ind]) : Supplied matrix not symmetric This same model worked fine before I updated the mgcv package, does anyone know why I now get the error message? Another question I have is if anyone knows how I can compare two...