Matlab Programming Tips Part 1
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The document provides an introduction to MATLAB programming, detailing how to use scripts and function files for executing commands. It explains the structure of script files and function files, highlighting the differences between them, and emphasizes the importance of coding best practices such as commenting and variable naming conventions. Additionally, examples and programming styles are outlined to aid users in writing effective and organized MATLAB programs.
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![Programming in MATLAB
There are two types of MATLAB programs
Al-Amer 2006
4
% script file
P=[1 3 2]
roots(P)
function [y]=fun(x)
y=x^2+3*x^2+2
script files function files
Script files
List of MATLAB statements
Variables are global
Run it by typing the file
name
Function files
Starts with function
List of MATLAB statements
Variables are local](https://image.slidesharecdn.com/matlabprogrammingtips1-160828112530/85/Matlab-Programming-Tips-Part-1-4-320.jpg)
![Function
Functions are more complex than scripts
Functions have their own local variables
Functions return output as specified, and can accept
input as specified
6
function [FC]=factorial(N)
FC=1;
for i=1:N
FC=FC*i;
end
6
output Function name
input
First statement
must start with
‘function’](https://image.slidesharecdn.com/matlabprogrammingtips1-160828112530/85/Matlab-Programming-Tips-Part-1-6-320.jpg)
![Commenting - An Example
function [FC]=factorial(N)
% [FC]=factorial(N)
% program to calculate the factorial of a number
% input N : an integer
% if N is not an integer the program obtains the
% factorial of the integer part of N
% output FC : the factorial of N
%
FC=1; % initial value of FC
for i=1:N
FC=FC*i; % n! =(n-1)!*n
end
10
These
comments
will be
displayed
when
‘help factorial’
is typed
Comments are used to explain
MATLAB statements](https://image.slidesharecdn.com/matlabprogrammingtips1-160828112530/85/Matlab-Programming-Tips-Part-1-10-320.jpg)
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