Change Number of Axis Tick Marks in ggplot2 Plot in R (Example Code)
In this tutorial you’ll learn how to adjust the number of axis ticks in a graphic in the R programming language.
Setting up the Example
data(iris) # Loading example data set 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) # Loading example data set 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, # Drawing plot with default axis tick marks aes(x = Sepal.Length, y = Sepal.Width)) + geom_point() my_plot |
my_plot <- ggplot(iris, # Drawing plot with default axis tick marks aes(x = Sepal.Length, y = Sepal.Width)) + geom_point() my_plot
Example: Increasing the Number of Axis Tick Marks in a ggplot2 Graphic
my_plot + # Changing number of axis tick marks scale_y_continuous(breaks = scales::pretty_breaks(n = 15)) |
my_plot + # Changing number of axis tick marks scale_y_continuous(breaks = scales::pretty_breaks(n = 15))
Further Resources
You may find some related R tutorials in the following list: