In a study of lizard behaviour, characteristics of 409 lizards were recorded, namely species (S), perch diameter (D) and perch height (H). Perch means preferred place to settle down (a branch on a tree). The focus of interest is in how the propensities of the lizards to choose perch height and diameter are related, and whether and how these depend on species.
A 3–dimensional array with factors diam: "<=4" ">4" height: ">4.75" "<=4.75" species: "anoli" "dist"
Schoener TW (1968) The anolis lizards of bimini: Resource partitioning in a complex fauna. Ecology 49:704-726
data(lizard) # Datasets lizardRAW and lizardDF are generated with the following code #lizardAGG <- as.data.frame(lizard) #f <- lizardAGG$Freq #idx <- unlist(mapply(function(i, n) rep(i, n), 1:8, f)) #set.seed(0805) #idx <- sample(idx) #lizardRAW <- as.data.frame(lizardAGG[idx, 1:3]) #rownames(lizardRAW) <- 1:NROW(lizardRAW)
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