Boxplots in Base R

This section introduces the functionality of the base-R function boxplot. Note that for some data formats, the plot function with x being a factor variable will also work.

Summary

Create basic box plots

boxplot(len ~ dose, data = ToothGrowth, frame = FALSE)

Box plots with the number of observations

gplots::boxplot2(len ~ dose, data = ToothGrowth,
                 frame = FALSE, top = TRUE)