#### 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.
gnuplot Cookbook
Credits
www.PacktPub.com
Preface
Free Chapter
Plotting Curves, Boxes, Points, and more
Annotating with Labels and Legends
Applying Colors and Styles
Combining Multiple Plots
Programming gnuplot and Dealing with Data
The Third Dimension
Using and Making Graphical User Interfaces
Surveying Special Topics
Finding Help and Information
Index

## Introduction

We begin the book with a set of recipes that cover gnuplot's one-dimensional graph styles. A 1D graph refers to the plotting of data or mathematical functions where the values plotted depend on a single variable. Examples are simple mathematical functions, such as y = sin(x), or 1D data, such as the temperature in a particular location versus time. The plotting of quantities that depend on two variables is covered starting in Chapter 8, The Third Dimension, where we show how to make surface, contour, and image plots.

Gnuplot can create a vast array of 1D plot types in a large number of styles. The recipes in this chapter survey all of the major types of 1D graph, with an example that can be run immediately to produce the result in the illustration. For each example, we have provided enough explanation in the There's more... section for you to extend and adapt the recipe for your particular problem. We assume that you have gnuplot up and running and are able to create plots on one of the terminals; the recipes in this chapter work on every terminal or output file type.