Dear members of the R help list, I want to do a hierarchical glm with binomial family but am unsure about how to write the syntax which involves nesting.
I want to test whether the risk of being attacked by Herbivores for Meadowsweet plants is significantly dependent on the Distance to heterospecific source plants. Dependent variable = Herbivory (yes/no) Explanatory continuous variable = Distance to heterospecific source plant Distance should be nested within Subpopulation which in turn should be nested within Population. The number of replicates per subpopulation varies between 8 and 36. The number of subpopulations per population varies between 4 and 9. I haven't figured out how to do nesting, but guessing that nesting is denoted with brackets I guess the syntax should look something like this (below). Could you please help me to correct this syntax so that it becomes useful in R? model<-glm(Herbivory~Distance(Subpopulation(Population)), family=binomial) Thanks a lot! I deeply appreciate your non-profit engagement! Johan ______________________________________________ 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.
