Contrast in lme4
It is better to send questions like this to the R-SIG-Mixed-Models at R-project.org mailing list, which I am cc:ing on this reply.
On Thu, Mar 12, 2015 at 3:09 AM adeela uaf <adeela.uaf at gmail.com> wrote:
Dear Douglas Bates, How to perform contrast analysis for fixed effects in lme4 package. My data is same as sleepstudy data with an additional cloumn comprising 12 treatments also. The structure of the treatmnets is such that: 1) 1 treatment is control 2) 4 treatments are bio-agents. 3) 3 treatments are botanical. 4) 2 are bi prodcts 5) 2 are fungisides I want to make comparison among the groups which differ significantly after Model<-lmer(Disease~Trt+Date+Trt*Date+(1|Subject),data=YR) Best Regars, Adeela