MATLAB Programming Fundamentals - MathWorks

Call Local Functions Using Function Handles

This example shows how to create handles to local functions. If a function returns handles

to local functions, you can call the local functions outside of the main function. This

approach allows you to have multiple, callable functions in a single file.

Create the following function in a file, ellipseVals.m, in your working folder. The

function returns a struct with handles to the local functions.

% Copyright 2015 The MathWorks, Inc.

function fh = ellipseVals

fh.focus = @computeFocus;

fh.eccentricity = @computeEccentricity;

fh.area = @computeArea;

end

function f = computeFocus(a,b)

f = sqrt(a^2-b^2);

end

function e = computeEccentricity(a,b)

f = computeFocus(a,b);

e = f/a;

end

function ae = computeArea(a,b)

ae = pi*a*b;

end

Invoke the function to get a struct of handles to the local functions.

h = ellipseVals

h =

struct with fields:

focus: @computeFocus

eccentricity: @computeEccentricity

13 Function Handles