MATLAB Programming

9 Classes and Objects
Saving and Loading Objects
You can use the MATLAB save and load commands to save and retrieve
user-defined objects to and from .mat files, just like any other variables.
When you load objects, MATLAB calls the object’s class constructor to register
theobjectintheworkspace.Theconstructor function for the object class you
are loading must be able to be called with no input arguments and return a
default object. See “Guidelines for Writing a Constructor” on page 9-10 for
more information.
Modifying Objects During Save or Load
When you issue a save or load command on objects, MATLAB looks for class
methods called saveobj and loadobj in the class directory. You can overload
these methods to modify the object before the save or load operation. For
example, you could define a saveobj method that saves related data along
with the object or you could write a loadobj method that updates objects to a
newer version when this type of object is loaded into the MATLAB workspace.
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