[R-sig-ME] About lmer() function in package lme4

Edgar.Torres at ifremer.fr Edgar.Torres at ifremer.fr
Thu Apr 1 17:56:22 CEST 2010


I have had problems with the function lmer in the package lme4, I'm  
trying to run a GLMM with a poisson distribution. But I receive the  
warning message

Warning message: In mer_finalize(ans) : iteration limit reached  
without convergence (9)

I tried to put more iteration with control=list(maxIter=500), but  
actually the program justo run 300 times, as the default.

the code that I wrote is this:

GLMM1 <- lmer(OPTOT ~ fYEAR + (fYEAR | BOAT), data=DATA1,  
family=poisson, na.action=na.omit,  
control=list(maxIter=500,msVerbose=T), verbose=T)

I am not really sure that the way that I wrote the control statement  
is the right one.

Thanks a lot

Phd student in Ecosystems
Centre de Recherche Halieutique  (IRD)
Avenue Jean Monnet BP 171
34203 Sète cedex France

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