Draw X-Axis on Top of ggplot2 Plot in R (Example Code)

In this R tutorial you’ll learn how to put an x-axis to the top of a graph.

Creating Example Data

data(iris)                     # Example data
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
my_plot <- ggplot(iris,        # Default x-axis
              aes(x = Sepal.Width,
                  y = Petal.Width)) +
  geom_line()
my_plot

r graph figure 1 draw x axis on top ggplot2

Example: Move X-Axis Ticks & Labels to Top of ggplot2 Plot

my_plot +                      # x-axis at the top
  scale_x_continuous(position = "top")

r graph figure 2 draw x axis on top ggplot2

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