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Octave Tutorial

Octave Tutorial

GNU Octave is a high-level interpreted Scientific Programming Language, primarily intended for numerical and scientific computations. It provides capabilities for the numerical solution of linear and nonlinear problems, and for performing other numerical experiments. Octave is much similar to MATLAB.



Octave can be used through its interactive command-line interface. We can also write non-interactive programs and scripts. Most Octave programs are easily portable.

Octave provides extensive graphics capabilities for data visualization and manipulations. It has a powerful mathematics-oriented syntax with built-in 2D/3D plotting and visualization tools.

Octave is easily extensible and customizable via user-defined functions written in Octave’s own language, or using dynamically loaded modules written in C/C++, Fortran, etc.

Install Octave

Octave is made available under the GNU General Public License. It may be freely copied and used.

Octave is cross-platform and runs under most Unix/Linux operating systems, Microsoft Windows, etc.



Steps to install Octave on Ubuntu Linux:

Launch Octave

Learn how to start Octave on Windows operating system.

Octave Components

An overview of the Octave components and windows.

Hello World using Octave

Declare Variables

Input & Output



Arithmetic Operators

Comparison Operators

Increment & Decrement Operators

If statement


While Loop

For Loop

Break statement

Continue statement


Octave Plot command

2D Plots

Simple Plot

3D Plots

Built-in Functions

Octave built-in mathematical functions:

User-defined Function

Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations.

Function Handle

Official Website

For more information on Octave, visit the official website:

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