Analysis

The first plot was made in the built-in graphics package in R, while the second one was made using qplot, which is a plotting command in ggplot2. We can see that the two plots look very different. The plot is a histogram of the temperature.

We will discuss geometric objects later in this chapter, in order to understand the different types of histograms. 

The built-in graphics package in R does not have a lot of features, so ggplot2 has become the package of choice. For the next exercises, we will continue to investigate making plots using ggplot2.