R How to Draw Panel Borders to a ggplot2 Graph (Example Code)

In this R tutorial you’ll learn how to add panel borders to plots.

Setting up the Example

data(iris)                     # Iris data set
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 & load ggplot2 package
library("ggplot2")
my_plot <- ggplot(iris,        # No border in ggplot2 graphic
                  aes(x = Petal.Width,
                      y = Petal.Length)) +
  geom_point()
my_plot

r graph figure 1 r draw panel borders ggplot2 graph programming language

Example: Adding Panel Border to ggplot2 Graphic

my_plot +                      # Drawing border to graph
  theme(panel.border = element_rect(colour = "green",
                                    size = 8,
                                    fill = NA))

r graph figure 2 r draw panel borders ggplot2 graph programming language

Related Articles & Further Resources

Please find some related R programming tutorials on topics such as graphics in R, text elements, and ggplot2 in the following list.

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