I'm using the iris data, previously changed the species factor from "setosa" "versicolor" and "virginica" to "s", "c" and "v". if I code this: plot(iris$Sepal.Length, iris$Petal.Length, col = iris$Species) The data are point wich can change for example, to a square: plot(iris$Sepal.Length, iris$Petal.Length, col = iris$Species, pch = 15) but, how I could show the species factor like this?: enter image description here
