R Programming Fundamentals

Creating Histograms using ggplot2

In this section, we will create a histogram with ggplot2 and experiment with different binwidths to find the best representation of the data. Follow the steps below:

1. Install the ggplot2 library and then load it:

install.packages("ggplot2")library(ggplot2)

2. Load the msleep dataset, a built-in dataset that comes installed with ggplot2, using data("msleep").

3. Create a histogram of the sleep_total variable from msleep. Do you get the binwidth error?

ggplot(msleep, aes(sleep_total)) + geom_histogram() 

4. Try the same histogram, but with binwidth = 10. Does the histogram improve?

ggplot(msleep, aes(sleep_total)) + geom_histogram(binwidth = 10)

5. Try the histogram one more time, now with binwidth = 1:

ggplot(msleep, ...