In this chapter, we learned how to make some specialized graphs that may be needed in some specific scenarios, such as multiple variables, correlated variables, geographically varying data, and data varying with time.

Congratulations! We have completed the book on Applied Data Visualization with R and ggplot2. Continue to explore ggplot2 further, and use your skills to look at similar real-world problems, as covered in the course and in your work, and convert numbers into insightful, meaningful, and powerful visualizations.