ggplot2 - Elegant Graphics for Data Analysis (2nd Edition)

Abstract

This article discusses ggplot2, an open source R package, based on a grammatical theory of graphics. The underlying theory has been discussed in depth elsewhere so this article illustrates some of the consequences of the theory for creating new graphics, the importance of programmable graphics, and the rich ecosystem that has grown up around ggplot2. © 2011 John Wiley & Sons, Inc.