Book Image

gnuplot Cookbook

By : Lee Phillips
Book Image

gnuplot Cookbook

By: Lee Phillips

Overview of this book

gnuplot is the world's finest technical plotting software, used by scientists, engineers, and others for many years. It is in constant development and runs on practically every operating system, and can produce output in almost any format. The quality of its 3d plots is unmatched and its ability to be incorporated into computer programs and document preparation systems is excellent. gnuplot Cookbook ñ it will help you master gnuplot. Start using gnuplot immediately to solve your problems in data analysis and presentation. Quickly find a visual example of the graph you want to make and see a complete, working script for producing it. Learn how to use the new features in gnuplot 4.4. Find clearly explained, working examples of using gnuplot with LaTeX and with your own computer programming language. You will master all the ins and outs of gnuplot through gnuplot Cookbook. You will learn to plot basic 2d to complex 3d plots, annotate from simple labels to equations, integrate from simple scripts to full documents and computer progams. You will be taught to annotate graphs with equations and symbols that match the style of the rest of your text, thus creating a seamless, professional document. You will be guided to create a web page with an interactive graph, and add graphical output to your simulation or numerical analysis program. Start using all of gnuplot's simple to complex features to suit your needs, without studying its 200 page manual through this Cookbook.
Table of Contents (18 chapters)
gnuplot Cookbook
About the Author
About the Reviewers
Finding Help and Information

Introducing gnuplot's high-quality graphics formats [new]

The pdf and png terminal drivers have been supplemented (or perhaps replaced, depending on the details of how your version of gnuplot was compiled) by higher quality versions that use the cairo graphics library.

As the emphasis in this chapter is on achieving the highest possible quality for publication in electronic documents or on paper, we are devoting the first recipe to showing you how to select and use gnuplot's new high-quality terminal drivers.

In the previous figure, we can clearly see the increase in quality when using the new pngcairo terminal driver rather than the older, libgd-based terminal. Text and anti-aliasing is handled better, and the drawing of curves in plots is vastly improved. The curve in the older version is clearly more jagged, while the cairo library smoothly interpolates the curve between sample points.

Getting ready

To reproduce this recipe, your version of gnuplot needs to have the pngcairo terminal compiled...