Dear all, I am having some problems trying to run a GLMM model with zero-inflation using the alpha version of glmmADMB (0.6.4) using R (2.13.1) in Windows and I would greatly appreciate some help. My count response variable (number of birds: count) fits a negative binomial distribution and the explanatory variables are both continuous and categorical (species= 17). The three random effects are site (68 of them), season (1 or 2) and land class (1 to 6). Ideally I would also like to build in a variance structure to allow a different spread per land class. This is the model I'm trying to run: (fm<-glmmadmb(count~species*btrees+species*built+species*btrees*built+(1|season)+(1|landclass)+(1|site), data=srp12, famil="nbinom", zeroInflation=TRUE))
I have read most of the supporting documents to glmmADMB and studied the examples but am still struggling to make headway. This is the error message I get; Memory allocation error -- Perhaps you are trying to allocate too much memory in your program Warning: running command 'C:\Windows\system32\cmd.exe /c "C:/R-2.13.1/library/glmmADMB/bin/windows32/glmmadmb.exe" -maxfn 500' had status 1 Warning in shell(cmd, invisible = TRUE) : '"C:/R-2.13.1/library/glmmADMB/bin/windows32/glmmadmb.exe" -maxfn 500' execution failed with error code 1 Error in glmmadmb(count ~ species * btrees + species * built + species * : The function maximizer failed I noticed the discussion on the admb help forum entitled ‘help with glmmADMB 0.6.4 - function maximizer failed’ with Rafael Mares discusses similar problems. I have tried some of the suggested solutions, none of which have been recognised as code in R. I have also run: > summary(fm) Which results in: Error in summary(fm) : object 'fm' not found This has happened however the equation is labelled. Perhaps there is a more appropriate package that I should be using (MCMCglmm)? I am quite new to R, so it is quite possible that I am missing something, so any help would be most appreciated. Apologies for the long message! Many thanks, Emma Rosenfeld PhD student, School of Geography, Earth and Environmental Sciences, University of Birmingham -- View this message in context: http://r.789695.n4.nabble.com/help-with-glmmADMB-ZI-function-maximizer-failed-tp3918994p3918994.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
