R Move ggplot2 Legend with Two Rows to the Bottom (Example Code)

In this R tutorial you’ll learn how to create a ggplot2 graph legend with multiple rows at the bottom of a plot.

Preparing the Example

data(iris)                     # Load iris data set for the example
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
library("ggplot2")
my_plot <- ggplot(iris,        # Default ggplot2 legend
                  aes(x = Sepal.Length,
                      y = Sepal.Width,
                      color = Species)) +
  geom_line()
my_plot

r graph figure 1 r move ggplot2 legend two rows bottom

Example: Create ggplot2 Legend at the Bottom with Multiple Rows Using guide_legend Function

my_plot +                      # ggplot2 legend at the bottom with two rows
  theme(legend.position = "bottom") +
  guides(color = guide_legend(nrow = 2,
                              byrow = TRUE))

r graph figure 2 r move ggplot2 legend two rows bottom

Related Tutorials

Have a look at the following R tutorials. They focus on topics such as time objects, graphics in R, and plot legends.

Leave a Reply

Your email address will not be published. Required fields are marked *

Fill out this field
Fill out this field
Please enter a valid email address.
You need to agree with the terms to proceed

Menu
Top