R How to Create a ggplot2 Graph of a Data Frame Subset (Example Code)
In this R tutorial you’ll learn how to create a ggplot2 plot of a data frame subset.
Setting up the Example
data(iris) # Loading iris 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 package |
ggplot(iris, # Plotting entire data frame aes(x = Sepal.Width, y = Sepal.Length, col = Species)) + geom_point() |
Example: Draw ggplot2 Graph of Selected Data Frame Rows
ggplot(iris[iris$Species %in% c("setosa", "virginica"), ], # Create ggplot2 plot of subset aes(x = Sepal.Width, y = Sepal.Length, col = Species)) + geom_point() |
Further Resources & Related Tutorials
Have a look at the following R programming language tutorials. They explain similar topics as this post: