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gnuplot Cookbook

gnuplot Cookbook

By : Lee Phillips
3.8 (4)
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gnuplot Cookbook

gnuplot Cookbook

3.8 (4)
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)
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gnuplot Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1
Finding Help and Information
2
Index

Making a basic histogram plot


This recipe shows you how to make the simplest step-type histogram. Later, we will build histogram and statistical plots on this, but sometimes this is all you need. The following figure shows a simple step-type histogram:

Getting ready

We're going to plot a part of our file parabola.text, so make sure that's still available. Of course, if you have your own sorted statistical data that will probably be more interesting.

How to do it…

Type the following command to make a histogram plot:

plot [-2:2] 'parabola.text' with histeps

How it works…

As we can see, rather than drawing a line through a series of x-y points, the histeps style draws a staircase composed of horizontal and vertical line segments. The vertical lines are drawn not at the actual x-coordinates given in the data, but at the average values of neighboring x-coordinates. This is the usual way to construct a histogram, where each box represents "how much" is contained in each interval between two x-values.

Visually different images
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83
Tech Concepts
36
Programming languages
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gnuplot Cookbook
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