Draw Labels with Subscript & Superscript in ggplot2 Facet Plot in R (Example Code)

In this R tutorial you’ll learn how to draw labels with subscripts and superscripts in a ggplot2 facet plot.

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 package
library("ggplot2")
ggplot(iris,                         # Default facet plot labels
       aes(x = Sepal.Length,
           y = Petal.Length)) +
  geom_line() +
  facet_wrap(Species ~ .)

r graph figure 1 draw labels subscript superscript ggplot2 facet r

Example: Draw ggplot2 Facet Plot with Subscripts & Superscripts in Labels

iris_mod <- iris                     # Modify labels
iris_mod$Species <- factor(iris_mod$Species,
                           labels = c("A^a",
                                      "B[b]",
                                      "C[c]^c"))
ggplot(iris_mod,                     # Subscript & superscript labels
       aes(x = Sepal.Length,
           y = Petal.Length)) +
  geom_line() +
  facet_wrap(Species ~ .,
             labeller = label_parsed)

r graph figure 2 draw labels subscript superscript ggplot2 facet r

Further Resources & Related Articles

In the following, you may find some additional resources on topics such as graphics in R, ggplot2, and labels:

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