MATLAB Object-Oriented Programming

Class with Modified Indexing

In this section...

“How to Modify Class Indexing” on page 17-39

“Class Description” on page 17-39

“Specialize Subscripted Reference — subsref” on page 17-40

“Specialize Subscripted Assignment — subsasgn” on page 17-42

“Implement Addition for Object Data — double and plus” on page 17-43

“MyDataClass.m” on page 17-44

How to Modify Class Indexing

This example defines a class that modifies the default indexing behavior by implementing

subsref and subsasgn methods. The class also implements type conversion and

addition by implementing a double converter method and a plus method.

The objective of the class design is to:

• Enable you to treat an object of the class as a numeric array


• Be able to contain nonnumeric and numeric data in an object of the class

Class Description

The class has three properties:

• Data — numeric test data


• Description — description of test data


• Date — date test was conducted

Assume that you have the following random data (randi):

d = randi(9,3,4)

d =

8 9 3 9

9 6 5 2

2 1 9 9

Class with Modified Indexing