books.google.com - This book was written for statisticians, computer scientists, geographers, researchers, and others interested in visualizing data. It presents a unique foundation for producing almost every quantitative graphic found in scientific journals, newspapers, statistical packages, and data visualization systems....http://books.google.com/books/about/The_Grammar_of_Graphics.html?id=_kRX4LoFfGQC&utm_source=gb-gplus-shareThe Grammar of Graphics
