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Section 2.2 Functions
A MATLAB
function is a
.m file that stores a sequence of MATLAB commands. Like a script, MATLAB executes those commands from top to bottom. The key difference is that a function is designed to accept
inputs (known information) and return
outputs (desired information).
You have already used many built-in MATLAB functions (such as
sqrt,
abs, and
floor). The functions you write in this course work the same way: MATLAB only cares about the inputs you provide and the outputs the function returns.
Table 15. Scripts versus Functions
Goal
Run a sequence of commands to complete a task
Create a reusable tool (inputs → outputs)
Running it
Press the “Run” button or type the script name in the command window
Call it with inputs in the command window or another script or function
Workspace
Shares the base workspace
Uses its own workspace
Reusability
Often specific to one situation
Designed to be used many times
