R ggplot2 – How to Create Axis Breaks with Integers Only (Example Code)
This tutorial illustrates how to draw a ggplot2 axis containing only integers in the R programming language.
Preparing the Example
data(iris) # Iris 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 |
data(iris) # Iris 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 ggplot2 package library("ggplot2") # Load ggplot2 |
install.packages("ggplot2") # Install ggplot2 package library("ggplot2") # Load ggplot2
my_plot <- ggplot(iris, aes(Petal.Length, Petal.Width)) + # Default ggplot2 plot geom_point() my_plot # Showing plot in RStudio |
my_plot <- ggplot(iris, aes(Petal.Length, Petal.Width)) + # Default ggplot2 plot geom_point() my_plot # Showing plot in RStudio
Example: Modify Axis Scales with pretty_breaks Function
install.packages("scales") |
install.packages("scales")
my_plot + # Nice scale values scale_y_continuous(breaks = pretty_breaks(3)) # Specify number of breaks |
my_plot + # Nice scale values scale_y_continuous(breaks = pretty_breaks(3)) # Specify number of breaks