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We have already learned about how we can create meaningful data visualizations in R using the Base Graphics package. In this section, we will learn about how we can create even more powerful data graphics using an R package called ggplot2.
The ggplot2 package is a very popular alternative to the base graphics package in R with over 1 million downloads in a year. At its core, it is an R package for creating statistical (data) graphics. However, it is different from other data visualization packages because it implements a very strong underlying grammar for creating these graphics. The ggplot2 package is an implementation of the ideas in the book, The Grammar of Graphics, by Leland Wilkinson, whose goal was to set out a set of general unifying principles for the visualization of data.
