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brienta
2010 May 01
0
Error in MEEM
...swallow nests located in different places in different farms). My dependent variable is a measure of plumage coloration. When I include four independent variables in the model everything is Ok, it works, but when I try to write a model with five independent variables like this:
insmodel<-lme(briventral~sex*inslarge*temp*humid*wspeed,random=~1|site/pair,method="ML")
I get this error message:
Error in MEEM(object, conLin, control$niterEM) :
Singularity in backsolve at level 0, block 1
I haven't been able to find many people who usually work with mixed effects models,...