[R] how to include a factor or class Variable

Hi How to include a factor or class variable to a fixed effect of lmer function. when i included it throws an error. Please help My code data - read.delim(C:/TestData/data.txt) Mon=as.factor(data$Month) lmerform= Y~ X2 +X3 + Month:Mon + (1|State)+ (1+ X5|State)

Re: [R] how to include a factor or class Variable

Please post this to r-sig-mixed-models instead. Or, better yet, consult your local statistician, as your question indicates a profound lack of understanding that may require more back and forth discussion than can occur on an internet help site. -- Bert On Thu, Nov 17, 2011 at 5:36 AM,