Welcome to Instant Heat Maps in R How-to.

Throughout this book, we will learn how to create simple and advanced heat maps, customize them, and create a nice output for presentations. We will be using data from various different file formats as input and work on our heat maps to add some interactivity to them.

We will also take a look at simple heat maps by creating a choropleth map of the United States and make a contour plot from topographical volcano data.