A function handle is a MATLAB® data type that represents a function. A typical use of function handles is to pass a function to another function. For example, you can use function handles as input arguments to functions that evaluate mathematical expressions over a range of values.
Function handles can represent either named or anonymous functions. To
create a function handle, use the
@ operator. For
example, create a handle to an anonymous function that evaluates the
expression x2 –
f = @(x,y) (x.^2 - y.^2);
|Handle to function|
|Construct character vector from function handle|
|Construct function handle from character vector|
|Function handles to all local functions in MATLAB file|
|Information about function handle|
- Create Function Handle
Use a function handle to create an association to a named function or an anonymous function. Then, you can indirectly call the representative function.
- Pass Function to Another Function
You can use function handles as input arguments to functions that evaluate mathematical expressions over a range of values, such as
- Parameterizing Functions
This topic explains how to store or access extra parameters for mathematical functions that you pass to functions such as
- Call Local Functions Using Function Handles
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.
- Compare Function Handles
The result of comparing equality of function handles depends on what the handle represents and when you created it.