GNU Octave: Beginner's Guide : Become a Proficient Octave User by Learning this High-level Scientific Numerical Tool from the Ground Up

Packt Publishing Ltd, Jun 21, 2011 - Computers - 258 pages
Today, scientific computing and data analysis play an integral part in most scientific disciplines ranging from mathematics and biology to imaging processing and finance. With GNU Octave you have a highly flexible tool that can solve a vast number of such different problems as complex statistical analysis and dynamical system studies.

The GNU Octave Beginner's Guide gives you an introduction that enables you to solve and analyze complicated numerical problems. The book is based on numerous concrete examples and at the end of each chapter you will find exercises to test your knowledge. It's easy to learn GNU Octave, with the GNU Octave Beginner's Guide to hand.

Using real-world examples the GNU Octave Beginner's Guide will take you through the most important aspects of GNU Octave. This practical guide takes you from the basics where you are introduced to the interpreter to a more advanced level where you will learn how to build your own specialized and highly optimized GNU Octave toolbox package. The book starts by introducing you to work variables like vectors and matrices, demonstrating how to perform simple arithmetic operations on these objects before explaining how to use some of the simple functionality that comes with GNU Octave, including plotting. It then goes on to show you how to write new functionality into GNU Octave and how to make a toolbox package to solve your specific problem. Finally, it demonstrates how to optimize your code and link GNU Octave with C and C++ code enabling you to solve even the most computationally demanding tasks. After reading GNU Octave Beginner's Guide you will be able to use and tailor GNU Octave to solve most numerical problems and perform complicated data analysis with ease.

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Contents

 Credits About the Author About the Reviewers wwwPacktPubcom Preface What you need for this book Who this book is for Conventions
 Time for action making a surface plot Time for action plotting parametric curves Summary Octave Scripts Writing and executing your first script Time for action making your first script Time for action interacting with the user Statements

 Time for action heading Reader feedback Customer support Chapter 1 Introducing GNU Octave So what is GNU Octave? Installing Octave Time for action building Octave from source Checking your installation with peaks Time for action testing with peaks Customizing Octave Time for action creating an Octave home directory under Windows Time for action editing the octaverc file Installing additional packages Time for action installing additional packages Getting help The behaviour of the Octave command prompt Summary Variables and Operators Simple numerical variables Time for action manipulating arrays Structures and cell arrays Time for action instantiating a structure Time for action instantiating a cell array Getting information Time for action using whos A few things that make life easier Basic arithmetic Time for action doing addition and subtraction operations Time for action doing multiplication operations Time for action doing left and right division Comparison operators and precedence rules Time for action working with precedence rules A few hints Summary Functions and Plotting Octave functions Time for action using the cos function Time for action putting together mathematical functions Time for action trying out floor ceil round and fix Time for action using Octave for advanced linear algebra Twodimensional plotting Time for action making your first plot Time for action changing the figure properties Time for action having multiple graphs in the same figure Time for action making an inset Threedimensional plotting