Finally: A book on Gnuplot! If you are interested in data analysis and visualization, you might be interested in the upcoming book: "Gnuplot in Action" (to be published, Fall 2008, Manning Publications). You can pre-order it directly from the publisher: www.manning.com/janert Gnuplot is probably the most popular open-source program for plotting and visualization. The book assumes no previous familiarity with Gnuplot. It introduces the most basic concepts rapidly, and then moves on to explain Gnuplot's advanced concepts and power features in detail. If you want to learn more about the book and the author, check out my book page at wwww.principal-value.com/my-book.php If you have comments or suggestions for the book, please let me know! Feel free to forward this information as appropriate. Best, Ph.