## library(gmodels) ## library(lme4) ## set.seed(314159) ## sleepstudy$dayGroup <- cut(sleepstudy$Days, seq(-1,9,by=2), include=T) ## # ci example ## fm2 <- lmer(Reaction ~ dayGroup + (1|Subject) + (0+Days|Subject), sleepstudy) ## ci(fm2) ## # estimable examples ## estimable(fm2, c( 0, -1, 1, 0, 0 ) ) # list all terms ## estimable(fm2, c("dayGroup(1,3]"=-1, "dayGroup(3,5]"=1)) # just the nonzero terms ## estimable(fm2, c("dayGroup(1,3]"=-1, "dayGroup(3,5]"=1), n.sim=5000 ) # more simulations... ## # fit.contrast example ## fit.contrast( fm2, "dayGroup", ## rbind("0-1 vs 3-4"=c(-1,0,1,0,0), ## "3-4 vs 5-6"=c(0,0,-1,1,0) ## ), ## conf=0.95 ) ## # Example from Ariel.Muldoon@oregonstate.edu ## homerange=c( ## "male","1","fall","0.1", ## "male","1","winter","0.3", ## "male","1","spring","5.2", ## "male","1","summer","3.1", ## "male","2","fall","3.4", ## "male","2","winter","1.3", ## "male","2","spring","4.8", ## "male","2","summer","4.3", ## "male","3","fall","3.9", ## "male","3","winter","3.8", ## "male","3","spring","5.7", ## "male","3","summer","2.0", ## "male","4","fall","3.7", ## "male","4","winter","4.3", ## "male","4","spring","6.0", ## "male","4","summer","1.8", ## "female","5","fall","4.3", ## "female","5","winter","1.9", ## "female","5","spring","7.2", ## "female","5","summer","6.9", ## "female","6","fall","5.3", ## "female","6","winter","4.3", ## "female","6","spring","6.2", ## "female","6","summer","4.8", ## "female","7","fall","7.1", ## "female","7","winter","4.9", ## "female","7","spring","8.3", ## "female","7","summer","7.7" ## ) ## homerange <- data.frame(matrix(homerange,ncol=4, byrow=T)) ## names(homerange) <- c("sex", "animal", "season", "area") ## homerange$area = as.numeric(as.character(homerange$area)) ## fit1 <- lmer(area ~ sex*season + (1|animal), data=homerange) ## summary(fit1) ## anova(fit1) ## #matrix to give estimable for making estimates ## spr <- rbind(c(1,0,1,0,0,0,0,0), ## c(1,1,0,0,0,1,0,0), ## c(1,0,0,1,0,0,0,0), ## c(1,1,0,0,0,0,1,0), ## c(1,0,0,0,1,0,0,0), ## c(1,1,0,0,0,0,0,1)) ## estimable(fit1, spr)