How to Apply the box() Function in R (2 Examples)

In this R article you’ll learn how to draw a border around a plot using the box function.

Example Data

data(iris)                         # Load 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
plot(x = iris$Sepal.Length,        # Create plot without box
     y = iris$Petal.Length)

r graph figure 1 apply box function

Example 1: Draw Box Around Plot

plot(x = iris$Sepal.Length,        # Create plot without box
     y = iris$Petal.Length)
box(col = "purple")                # Adding a box around the plot

r graph figure 2 apply box function

Example 2: Draw Box Around Figure

plot(x = iris$Sepal.Length,        # Create plot without box
     y = iris$Petal.Length)
box(col = "purple",                # Adding a box around the entire figure
    which = "figure")

r graph figure 3 apply box function

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