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Table of Contents

Preface
- Acknowledgements
- How You Can Contribute to Octave
- Distribution
1. A Brief Introduction to Octave
- 1.1 Running Octave
- 1.2 Simple Examples
- 1.3 Conventions
2. Getting Started
- 2.1 Invoking Octave from the Command Line
  - 2.1.1 Command Line Options
  - 2.1.2 Startup Files
- 2.2 Quitting Octave
- 2.3 Commands for Getting Help
- 2.4 Command Line Editing
- 2.5 How Octave Reports Errors
- 2.6 Executable Octave Programs
- 2.7 Comments in Octave Programs
3. Data Types
- 3.1 Built-in Data Types
- 3.2 User-defined Data Types
- 3.3 Object Sizes
4. Numeric Data Types
- 4.1 Matrices
  - 4.1.1 Empty Matrices
- 4.2 Ranges
- 4.3 Single Precision Data Types
- 4.4 Integer Data Types
  - 4.4.1 Integer Arithmetic
- 4.5 Bit Manipulations
- 4.6 Logical Values
- 4.7 Promotion and Demotion of Data Types
- 4.8 Predicates for Numeric Objects
5. Strings
- 5.1 Escape Sequences in string constants
- 5.2 Character Arrays
- 5.3 Creating Strings
  - 5.3.1 Concatenating Strings
  - 5.3.2 Conversion of Numerical Data to Strings
- 5.4 Comparing Strings
- 5.5 Manipulating Strings
- 5.6 String Conversions
- 5.7 Character Class Functions
6. Data Containers
- 6.1 Data Structures
- 6.2 Cell Arrays
- 6.3 Comma Separated Lists
  - 6.3.1 Comma Separated Lists Generated from Cell Arrays
  - 6.3.2 Comma Separated Lists Generated from Structure Arrays
7. Variables
- 7.1 Global Variables
- 7.2 Persistent Variables
- 7.3 Status of Variables
8. Expressions
- 8.1 Index Expressions
- 8.2 Calling Functions
  - 8.2.1 Call by Value
  - 8.2.2 Recursion
- 8.3 Arithmetic Operators
- 8.4 Comparison Operators
- 8.5 Boolean Expressions
  - 8.5.1 Element-by-element Boolean Operators
  - 8.5.2 Short-circuit Boolean Operators
- 8.6 Assignment Expressions
- 8.7 Increment Operators
- 8.8 Operator Precedence
9. Evaluation
- 9.1 Calling a Function by its Name
- 9.2 Evaluation in a Different Context
10. Statements
- 10.1 The if Statement
- 10.2 The switch Statement
  - 10.2.1 Notes for the C programmer
- 10.3 The while Statement
- 10.4 The do-until Statement
- 10.5 The for Statement
  - 10.5.1 Looping Over Structure Elements
- 10.6 The break Statement
- 10.7 The continue Statement
- 10.8 The unwind_protect Statement
- 10.9 The try Statement
- 10.10 Continuation Lines
11. Functions and Scripts
- 11.1 Defining Functions
- 11.2 Multiple Return Values
- 11.3 Variable-length Argument Lists
- 11.4 Variable-length Return Lists
- 11.5 Returning From a Function
- 11.6 Default Arguments
- 11.7 Function Files
- 11.8 Script Files
- 11.9 Function Handles, Inline Functions, and Anonymous Functions
- 11.10 Commands
- 11.11 Organization of Functions Distributed with Octave
12. Errors and Warnings
- 12.1 Handling Errors
  - 12.1.1 Raising Errors
  - 12.1.2 Catching Errors
- 12.2 Handling Warnings
  - 12.2.1 Issuing Warnings
  - 12.2.2 Enabling and Disabling Warnings
13. Debugging
- 13.1 Entering Debug Mode
- 13.2 Leavinging Debug Mode
- 13.3 Breakpoints
- 13.4 Debug Mode
- 13.5 Call Stack
14. Input and Output
- 14.1 Basic Input and Output
- 14.2 C-Style I/O Functions
15. Plotting
- 15.1 Plotting Basics
- 15.2 Advanced Plotting
16. Matrix Manipulation
- 16.1 Finding Elements and Checking Conditions
- 16.2 Rearranging Matrices
- 16.3 Applying a Function to an Array
- 16.4 Special Utility Matrices
- 16.5 Famous Matrices
17. Arithmetic
- 17.1 Exponents and Logarithms
- 17.2 Complex Arithmetic
- 17.3 Trigonometry
- 17.4 Sums and Products
- 17.5 Utility Functions
- 17.6 Special Functions
- 17.7 Coordinate Transformations
- 17.8 Mathematical Constants
18. Linear Algebra
- 18.1 Techniques used for Linear Algebra
- 18.2 Basic Matrix Functions
- 18.3 Matrix Factorizations
- 18.4 Functions of a Matrix
- 18.5 Specialized Solvers
19. Nonlinear Equations
20. Diagonal and Permutation Matrices
- 20.1 Creating and Manipulating Diagonal and Permutation Matrices
- 20.2 Linear Algebra with Diagonal and Permutation Matrices
  - 20.2.1 Expressions Involving Diagonal Matrices
  - 20.2.2 Expressions Involving Permutation Matrices
- 20.3 Functions That Are Aware of These Matrices
  - 20.3.1 Diagonal Matrix Functions
  - 20.3.2 Permutation Matrix Functions
- 20.4 Some Examples of Usage
- 20.5 The Differences in Treatment of Zero Elements
21. Sparse Matrices
- 21.1 The Creation and Manipulation of Sparse Matrices
- 21.2 Linear Algebra on Sparse Matrices
- 21.3 Iterative Techniques applied to sparse matrices
- 21.4 Real Life Example of the use of Sparse Matrices
22. Numerical Integration
- 22.1 Functions of One Variable
- 22.2 Orthogonal Collocation
- 22.3 Functions of Multiple Variables
23. Differential Equations
- 23.1 Ordinary Differential Equations
- 23.2 Differential-Algebraic Equations
24. Optimization
- 24.1 Linear Programming
- 24.2 Quadratic Programming
- 24.3 Nonlinear Programming
- 24.4 Linear Least Squares
25. Statistics
- 25.1 Descriptive Statistics
- 25.2 Basic Statistical Functions
- 25.3 Statistical Plots
- 25.4 Tests
- 25.5 Models
- 25.6 Distributions
- 25.7 Random Number Generation
26. Sets
- 26.1 Set Operations
27. Polynomial Manipulations
- 27.1 Evaluating Polynomials
- 27.2 Finding Roots
- 27.3 Products of Polynomials
- 27.4 Derivatives and Integrals
- 27.5 Polynomial Interpolation
- 27.6 Miscellaneous Functions
28. Interpolation
- 28.1 One-dimensional Interpolation
- 28.2 Multi-dimensional Interpolation
29. Geometry
- 29.1 Delaunay Triangulation
  - 29.1.1 Plotting the Triangulation
  - 29.1.2 Identifying points in Triangulation
- 29.2 Voronoi Diagrams
- 29.3 Convex Hull
- 29.4 Interpolation on Scattered Data
30. Signal Processing
31. Image Processing
- 31.1 Loading and Saving Images
- 31.2 Displaying Images
- 31.3 Representing Images
- 31.4 Plotting on top of Images
- 31.5 Color Conversion
32. Audio Processing
33. Object Oriented Programming
- 33.1 Creating a Class
- 33.2 Manipulating Classes
- 33.3 Indexing Objects
- 33.4 Overloading Objects
- 33.5 Inheritance and Aggregation
34. System Utilities
- 34.1 Timing Utilities
- 34.2 Filesystem Utilities
- 34.3 File Archiving Utilities
- 34.4 Networking Utilities
- 34.5 Controlling Subprocesses
- 34.6 Process, Group, and User IDs
- 34.7 Environment Variables
- 34.8 Current Working Directory
- 34.9 Password Database Functions
- 34.10 Group Database Functions
- 34.11 System Information
- 34.12 Hashing Functions
35. Packages
- 35.1 Installing and Removing Packages
- 35.2 Using Packages
- 35.3 Administrating Packages
- 35.4 Creating Packages
A. Dynamically Linked Functions
- A.1 Oct-Files
- A.2 Mex-Files
- A.3 Standalone Programs
B. Test and Demo Functions
- B.1 Test Functions
- B.2 Demonstration Functions
C. Tips and Standards
- C.1 Writing Clean Octave Programs
- C.2 Tips for Making Code Run Faster.
- C.3 Tips on Writing Comments
- C.4 Conventional Headers for Octave Functions
- C.5 Tips for Documentation Strings
D. Contributing Guidelines
- D.1 How to Contribute
- D.2 General Guidelines
- D.3 Octave Sources (m-files)
- D.4 C++ Sources
- D.5 Other Sources
E. Known Causes of Trouble
- E.1 Actual Bugs We Haven't Fixed Yet
- E.2 Reporting Bugs
- E.3 Have You Found a Bug?
- E.4 Where to Report Bugs
- E.5 How to Report Bugs
- E.6 Sending Patches for Octave
- E.7 How To Get Help with Octave
F. Installing Octave
- F.1 Installation Problems
G. Emacs Octave Support
- G.1 Installing EOS
- G.2 Using Octave Mode
- G.3 Running Octave From Within Emacs
- G.4 Using the Emacs Info Reader for Octave
H. GNU GENERAL PUBLIC LICENSE
Concept Index
Function Index
Operator Index

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