How to Add Text Outside of ggplot2 Plot Borders in R (Example Code)

In this tutorial, I’ll illustrate how to annotate a character string outside of a ggplot2 plot in the R programming language.

Preparing the Example

data(iris)                      # Loading 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 & load ggplot2
library("ggplot2")
my_plot <- ggplot(iris,         # Creating default ggplot2 plot
                  aes(Petal.Length,
                      Petal.Width,
                      label = "some text")) +
  geom_point() +
  geom_text(x = 0, size = 5)    # Trying to add text
my_plot                         # ggplot2 plot does not show text

r graph figure 1 add text outside ggplot2 borders r

Example: Change Plot Margins & Allow Text Outside of Graphic Borders

my_plot +                       # Adding text
  theme(plot.margin = unit(c(1, 1, 1, 6), "lines")) +
  coord_cartesian(clip = "off")

r graph figure 2 add text outside ggplot2 borders r

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