Modify Number of Decimals on Axis Tick Labels of ggplot2 Plot in R (Example Code)

In this R tutorial you’ll learn how to modify the number of decimals on the axis tick labels of a plot.

Setting up the Example

data(iris)                     # Loading example data frame
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 ggplot2 package
library("ggplot2")             # Load ggplot2 package
my_plot <- ggplot(iris,        # Drawing ggplot2 plot without manual axis
                  aes(x = Sepal.Length,
                      y = Sepal.Width)) +
  geom_point()
my_plot                        # Draw ggplot2 plot with default decimals

r graph figure 1 modify number decimals on axis tick labels ggplot2 r

Example: Modify Number of Decimal Places in ggplot2 Plot Axis Tick Labels Using scales Package

install.packages("scales")     # Install scales package
library("scales")              # Load scales package
my_plot +                      # Manually specify decimal places
  scale_x_continuous(labels = number_format(accuracy = 0.01)) +
  scale_y_continuous(labels = number_format(accuracy = 0.00001))

r graph figure 2 modify number decimals on axis tick labels ggplot2 r

Related Articles & Further Resources

Below, you can find some further resources on topics such as ggplot2, graphics in R, numeric values, and labels:

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