search for: emstep

Hi I'm using lme4 to do random effects modelling. I keep getting the following error message: Error in "EMsteps<-"(*tmp*', value = control) : invalid source matrix I get the error when I include more than one random effect in the model, sometime I'm able to get two. I've looked into the variables that cause the problems aren't highly correlated, but they are dummy varia...

What's happening? > Celpe.Mixed <- lme(Nota~Tarefa + Corretor %in% Tarefa,random=~1|ID,data=Celpe.Dados11) Error in "EMsteps<-"(`*tmp*`, value = controlvals) : error code 6 from Lapack routine dtrtri > I've trying to fit a Mixed model using lme from package lme4 and the error above has occourred. What Should I Do to solve this? Best regards []s Leonard Assis Estatístico / CONFE 7439 UIN : 41-...