R How to Convert Axis of ggplot2 Graph to Logarithm (Example Code)

This tutorial shows how to transform axis values to log in the R programming language.

Setting up the Example

data(iris)                     # Loading iris 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 & load ggplot2
library("ggplot2")
my_plot <- ggplot(iris,        # Drawing iris data set
                  aes(x = Petal.Length,
                      y = Sepal.Length)) +
  geom_point()
my_plot

r graph figure 1 r convert axis ggplot2 graph logarithm

Example: Convert X-Axis of ggplot2 Graphic to Logarithm

my_plot +                      # Transforming x-axis to log
  xlab("Petal.Length (log)") +
  scale_x_continuous(trans = "log")

r graph figure 2 r convert axis ggplot2 graph logarithm

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