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GNU Octave Beginner's Guide

You're reading from   GNU Octave Beginner's Guide Become a proficient Octave user by learning this high-level scientific numerical tool from the ground up

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Product type Paperback
Published in Jun 2011
Publisher Packt
ISBN-13 9781849513326
Length 280 pages
Edition 1st Edition
Languages
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Author (1):
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Jesper Schmidt Hansen Jesper Schmidt Hansen
Author Profile Icon Jesper Schmidt Hansen
Jesper Schmidt Hansen
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Table of Contents (15) Chapters Close

GNU Octave
Credits
About the Author
About the Reviewers
1. www.PacktPub.com
2. Preface
1. Introducing GNU Octave FREE CHAPTER 2. Interacting with Octave: Variables and Operators 3. Working with Octave: Functions and Plotting 4. Rationalizing: Octave Scripts 5. Extensions: Write Your Own Octave Functions 6. Making Your Own Package: A Poisson Equation Solver 7. More Examples: Data Analysis 8. Need for Speed: Optimization and Dynamically Linked Functions Pop quiz - Answers

Time for action - making an inset


  1. 1. First we type the command:

octave:96> subplot(1,1,1)
  • which will open the main plotting window and allow you to make subplots.

  1. 2. Now, to plot the graph of f1 with line width 5, we use:

octave:97>plot(x,f_1, "linewidth", 5)
  1. 3. Set the axis limits to ensure space for the inset:

octave:98> set(gca, "xlim", [-6 2.5], "ylim", [-50 70])
  1. 4. When we insert the smaller inset window, we specify the location of the lower-left corner of the inset and the length and height. We do so in fractions of the main plotting window (including the axis ticks). For example:

octave:99> axes("position",[0.3 0.2 0.3 0.3])
  1. 5. To plot in the inset, we simply use the basic plot function:

octave:100> plot(x, f_2, "red", "linewidth", 5)

What just happened?

In Command 99, the function axes is used to control the axes properties. The first argument is the axes property "position", and the second argument is the corresponding value. Unfortunately, you cannot (currently) control...

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