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Type 'q()' to quit R. > library("lme4") Loading required package: Matrix > L <- load(system.file("testdata","crabs_randdata2.Rda",package="lme4")) > ## randdata0: simulated data, in form suitable for plotting > ## randdata: simulated data, in form suitable for analysis > > ## fr ## alive/dead formula > ## fr2 ## proportion alive formula (use with weights=initial.snail.density) > > ## FIXME: there are still bigger differences than I'd like between the approaches > ## (mostly in the random-effects correlation). It's not clear who's right; > ## lme4 thinks its parameters are better, but ?? Could be explored further. > > if (FALSE) { + ## library(ggplot2) ## commented to avoid triggering Suggests: requirement + library(grid) + zmargin <- theme(panel.margin=unit(0,"lines")) + theme_set(theme_bw()) + g1 <- ggplot(randdata0,aes(x=snail.size,y=surv,colour=snail.size,fill=snail.size))+ + geom_hline(yintercept=1,colour="black")+ + stat_sum(aes(size=factor(..n..)),alpha=0.6)+ + facet_grid(.~ttt)+zmargin+ + geom_boxplot(fill=NA,outlier.colour=NULL,outlier.shape=3)+ ## set outliers to same colour as points + ## (hard to see which are outliers, but it doesn't really matter in this case) + scale_size_discrete("# obs",range=c(2,5)) + } > > if (.Platform$OS.type != "windows") { + t1 <- system.time(glmer1 <- glmer(fr2,weights=initial.snail.density, + family ="binomial", data=randdata)) + t1B <- system.time(glmer1B <- glmer(fr,family ="binomial", data=randdata)) + + res1 <- c(fixef(glmer1),c(VarCorr(glmer1)$plot)) + res1B <- c(fixef(glmer1B),c(VarCorr(glmer1B)$plot)) + p1 <- unlist(getME(glmer1,c("theta","beta"))) + stopifnot(all.equal(res1,res1B)) + + dfun <- update(glmer1,devFunOnly=TRUE) + stopifnot(all.equal(dfun(p1),c(-2*logLik(glmer1)))) + ## + ## library(lme4.0) ## version 0.999999.2 results + ## t1_lme4.0 <- system.time(glmer1X <- + ## glmer(fr2,weights=initial.snail.density, + ## family ="binomial", data=randdata)) + ## dput(c(fixef(glmer1X),c(VarCorr(glmer1X)$plot))) + ## p1X <- c(getME(glmer1X,"theta"),getME(glmer1X,"beta")) + p1X <- c(0.681301656652347, -1.14775239687404, 0.436143018123226, + 2.77730476938968, 0.609023583738824, -1.60055813739844, 2.0324468778545, + 0.624173873057839, -1.7908793509579, -2.44540201631615, -1.42365990002708, + -2.26780929006268, 0.700928084600075, -1.26220238391029, 0.369024582097804, + 3.44325347343035, 2.26400391093108) + stopifnot(all.equal(unname(p1),p1X,tolerance=0.03)) + dfun(p1X) + dfun(p1) + ## ~ 1.8 seconds elapsed time + lme4.0_res <- + structure(c(2.77730476938968, 0.609023583738824, -1.60055813739844, + 2.0324468778545, 0.624173873057839, -1.7908793509579, -2.44540201631615, + -1.42365990002708, -2.26780929006268, 0.700928084600075, -1.26220238391029, + 0.369024582097804, 3.44325347343035, 2.26400391093108, 0.464171947357232, + -0.532754465140956, -0.532754465140956, 0.801690946568518), + .Names = c("(Intercept)", + "crab.speciesS", "crab.speciesW", "crab.sizeS", "crab.sizeM", + "snail.sizeS", "crab.speciesS:crab.sizeS", "crab.speciesS:crab.sizeM", + "crab.speciesS:snail.sizeS", "crab.speciesW:snail.sizeS", + "crab.sizeS:snail.sizeS", "crab.sizeM:snail.sizeS", + "crab.speciesS:crab.sizeS:snail.sizeS", + "crab.speciesS:crab.sizeM:snail.sizeS", "", "", "", "")) + + stopifnot(all.equal(res1,lme4.0_res,tolerance=0.015)) + + + ## library("glmmADMB") + ## prop/weights formulation: ~ 7 seconds + ## t1_glmmadmb <- system.time(glmer1B <- glmmadmb(fr,family ="binomial", + ## corStruct="full",data=randdata)) + ## dput(c(fixef(glmer1B),c(VarCorr(glmer1B)$plot))) + glmmADMB_res <- structure(c(2.7773101267224, 0.609026276823218, -1.60055704634712, + 2.03244174458562, 0.624171008585953, -1.79088398816641, -2.44540300134182, + -1.42366043619683, -2.26780858382505, 0.700927141726545, -1.26219964572264, + 0.369029052442189, 3.44326297908383, 2.26403738918967, 0.46417, + -0.53253, -0.53253, 0.80169), .Names = c("(Intercept)", "crab.speciesS", + "crab.speciesW", "crab.sizeS", "crab.sizeM", "snail.sizeS", "crab.speciesS:crab.sizeS", + "crab.speciesS:crab.sizeM", "crab.speciesS:snail.sizeS", "crab.speciesW:snail.sizeS", + "crab.sizeS:snail.sizeS", "crab.sizeM:snail.sizeS", "crab.speciesS:crab.sizeS:snail.sizeS", + "crab.speciesS:crab.sizeM:snail.sizeS", "", "", "", "")) + + stopifnot(all.equal(res1B,glmmADMB_res,tolerance=0.015)) + } ## skip on windows (for speed) > > proc.time() user system elapsed 1.23 0.15 1.36