Introduction

The graphs we created in the previous chapter served the purpose of illustrating the various 2D plot styles, but they were all missing a few things. For a graph to be useful in the real world, it must be endowed with a title and various labels that explain what it is about and how to interpret its assorted plot elements.

In this chapter, we revisit the 2D graph, creating one with a few curves, two different y-axes, and shaded areas, and in each recipe, we add an additional informative decoration to the plot. The graph remains the same, but in each recipe it will acquire more detailed annotation. This chapter is all about how to make these annotations, not about the plotting itself.