MATLAB Object-Oriented Programming

Property Value Purpose

FofXY function

handle

MATLAB expression (function of two variables).

Lm two-element

vector

Limits over which function is evaluated in both

variables. SetObservable attribute set to true to

enable property event listeners.

Data structure with

x, y, and z

matrices

Data resulting from evaluating the function. Used for

surface graph. Dependent attribute set to true,

which means the get.Data method is called to

determine property value when queried and no data

is stored.

Event When Triggered

UpdateGraph FofXY property set function (set.FofXY) calls the notify method

when a new value is specified for the MATLAB expression on an

object of this class.

Method Purpose

fcneval Class constructor. Inputs are function handle and two-element vector

specifying the limits over which to evaluate the function.

set.FofXY FofXY property set function. Called whenever property value is set,

including during object construction.

set.Lm Lm property set function. Used to test for valid limits.

get.Data Data property get function. This method calculates the values for

the Data property whenever that data is queried (by class members

or externally).

grid A static method (Static attribute set to true) used in the

calculation of the data.

Summary of fcnview Class

Objects of the fcnview class contain fcneval objects as the source of data for the four

surface graphs created in a function view. fcnview creates the listeners and callback

functions that respond to changes in the data contained in fcneval objects. For a listing

of the class definition, see “@fcnview/fcnview.m Class Code” on page 11-65

11 Events — Sending and Responding to Messages