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.
# Change the color of border using one single color boxplot(len ~ dose, data = ToothGrowth, frame = FALSE, border = "steelblue") # Change the color of border. # Use different colors for each group boxplot(len ~ dose, data = ToothGrowth, frame = FALSE, border = c("#999999", "#E69F00", "#56B4E9")) # Change fill color : single color boxplot(len ~ dose, data = ToothGrowth, frame = FALSE, col = "steelblue") # Change fill color: multiple colors boxplot(len ~ dose, data = ToothGrowth, frame = FALSE, col = c("#999999", "#E69F00", "#56B4E9"))