In this chapter, we saw how you can manipulate the organization of the plot in the plot area. This is useful when you want to place several plots next to each other or if you want to include a small plot inset within the plot area of another graph. We also saw how you can save your plot in a file, ranging from manually saving the plot up to including the saving options in a script file that can be executed. In the last chapter, we will see a few applications of ggplot2 that also involve the use of other R packages. We will see how mapped data can be plotted in ggplot2 objects and how matrix scatterplots and heat maps can be created.