Draw Plot Legend with White Border & Background in R (Example Code)

In this R programming tutorial you’ll learn how to draw a white legend.

Example Data

data(iris)                         # Loading some 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$Sepal.Width,         # Base R plot
     y = iris$Sepal.Length,
     col = iris$Species,
     pch = 16)
abline(h = seq(1, 10, 0.5))        # Draw  horizontal lines
legend("topright",                 # Add legend
       legend = levels(iris$Species),
       col = 1:3,
       pch = 16)

r graph figure 1 draw legend white border background r

Example: Drawing Legend with White Borders & Background

plot(x = iris$Sepal.Width,         # Base R plot
     y = iris$Sepal.Length,
     col = iris$Species,
     pch = 16)
abline(h = seq(1, 10, 0.5))        # Draw  horizontal lines
legend("topright",                 # Add legend
       legend = levels(iris$Species),
       col = 1:3,
       pch = 16,
       box.col = "white")

r graph figure 2 draw legend white border background r

Related Tutorials & Further Resources

Please find some additional R tutorials on topics such as graphics in R, plot legends, and colors below.

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