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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

Added flexibility C style input and output functions


The function disp is easy to use. However, it has limitations. For example, we can display only a single variable with disp and it always prints a newline character after displaying the variable value

Octave has implemented most of the very flexible input and output functionality that you may know from C. If not, do not worry, we will go through the most important one here, namely the printf function. Functions that can write and read to and from files, such as fprintf, fgets, and fscanf, are also supported in Octave: if you want to know more about these functions, I strongly recommend you to look in the Octave manual.

printf

printf is an acronym for print formatted text. The general syntax is:

printf(template, ...)

Here, template is a text string and can also include text format specifiers and/or escape sequences. The ... indicates optional arguments. For example:

octave:42>for n=1:5
>printf("n is %d\n", n);
>endfor
n is 1...
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