Nothing tells a story about your data as powerfully as good plots. Graphics captures your data much better than summary statistics and often shows you features that you would not be able to glean from summaries alone.
R has excellent tools for visualizing data. Unfortunately, it also has more tools than you really know what to do with. There are several different frameworks for visualizing data, and they are usually not compatible, so you cannot easily combine the various approaches.
In this chapter, we look at graphics in R, and we cannot possibly cover all the plotting functionality, so ...