It’s somewhat unusual to add them to boxplots, as they’re usually used on charts where exact values are displayed (bar, line, etc.). Add Text, Titles, Subtitles, Captions, and Axis Labels to a ggplot Boxplot Labeling ggplot Boxplots No one knows what your ggplot boxplot represents without them. ![]() There’s still one gigantic elephant in the room left to discuss - titles and labels. Style boils down to personal preference, but this one is much easier to look at in our opinion. The head() function prints the first six rows of the dataset: You’ll have to convert the cyl variable to a factor beforehand. ![]() We’ll visualize boxplots for the mpg (Miles per gallon) variable among different cyl (Number of cylinders) options in most of the charts. You’ll need only ggplot2 installed to follow along. It’s a small and easy-to-explore dataset we’ll use today to draw boxplots. R has many datasets built-in, one of them being mtcars. Make Your First ggplot Boxplot Data frame for Your Boxplot Let’s see how you can use R and ggplot to visualize boxplots. So if you’re trying to install ggplot (the package), you’ll run into a wall. If you call the ggplot function, it’s simply ‘ggplot’, but the current package is ‘ggplot2’. That’s because the previous package version was titled – you guessed it – ‘ggplot’, and old habits die hard. Often, you’ll hear or see people referencing the ggplot2 package as ‘ggplot’.
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