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

Scripting gnuplot with its own language

We have learned how to use a large number of gnuplot commands and assembled them into scripts, included with this book as code samples, that can be executed from the command line or read in from the gnuplot's interactive plot with the load command. Up to now, however, these scripts have taken the form of a simple sequence of commands, each one to be executed once; the same result is obtained whether we enter the commands one at a time at the prompt or load the script as a whole, in batch mode.

There are many tasks that are much more convenient, and others that are only possible, if we can apply some sort of automation to the generation of commands. Fortunately, gnuplot, as part of its command language, includes a simple facility for applying some basic programming constructs. There is a basic looping control, a way to iterate over a set of commands, and an if—then—else statement. With these few borrowings from procedural languages, we can do a great...