Modify Box & Fill Colors of ggplot2 Boxplot in R (2 Examples)
In this article, I’ll explain how to modify the colors of ggplot2 boxplots in R.
Preparing the Examples
data(iris) # Loading example data to RStudio head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa |
install.packages("ggplot2") # Install ggplot2 package library("ggplot2") # Load ggplot2 package |
ggplot(iris, aes(x = Species, # All ggplot2 boxplots without color y = Petal.Width)) + geom_boxplot() |
Example 1: Different Filling Color for Each ggplot2 Boxplot
ggplot(iris, aes(x = Species, # Modify filling colors y = Petal.Width, fill = Species)) + geom_boxplot() |
Example 2: Different Box Color for Each ggplot2 Boxplot
ggplot(iris, aes(x = Species, # Modify box colors y = Petal.Width, col = Species)) + geom_boxplot() |
Further Resources & Related Tutorials
In the following, you can find some further resources on topics such as colors, lines, and plot legends: