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$Species)
The data are point which can change for example, to a square: plot(iris$Sepal.Length, iris$Petal.Length, col = iris$Species, pch = 15)
but, how I could show the species factor like this graph?
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