Octave User-defined Function

In this tutorial, we will learn about user-defined functions in Octave. User-defined functions are stored in a separate file with the filename as the function name.

User-defined function

Create a new file with the .m extension. The file name should match the function name. For example, if you want to define a function named myFunction, you should create a file called myFunction.m.

Let’s write a sample function to convert Fahrenheit temperature to Celsius temperature.

We will use the following conversion formula:

  function [Celsius] = FahToCel(Fahrenheit)
% Function: FahToCel.m
% 
Celsius = 5*(Fahrenheit-32)/9;
endfunction

The function should be defined in a filename called FahToCel.m 

Function Call

We can invoke the function with the function name and pass the parameters.

%Sample Usage
% How to invoke the user defined function
celsius = FahToCel(50);
disp(celsius);

That’s it.

Octave Tutorials

Octave Tutorial on this website can be found at:

• https://www.testingdocs.com/octave-tutorial/