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

Setting manual tics

Sometimes gnuplot's various automatic tic generation routines are not flexible enough and you need to take complete control of the position of every tic mark, or you need to place custom labels on the tics rather than rely on the automatically generated numerical labels provided by the program. gnuplot is extremely flexible in this regard; the following figure illustrates our first example of manual tic placement:

Notice the tic labels and positions along the x-axis. The tics are aligned with the peaks and zero crossings of the sine wave, and are labeled using pi rather than an approximate decimal. This is more meaningful mathematically and is the natural way to label the axis when plotting this circular function. gnuplot's automatically chosen tic positions and numerical labels would be placed at the positions 1, 2, 3, and so on. These tic positions would have no particular relation to the function we are plotting. In order to get the result in the figure, we need to...