The function that is not stored in a program file. This function accepts multiple inputs and returns one output. It consists of a single MATLAB expression. Anonymous Functions An anonymous function is like an inline function that is defined within a single MATLAB statement. So you will basically type in the name of the function first and then type in the interval. Following are the various types of functions 1. The proper syntax for fplot is: fplot (name of function, interval). To plot an anonymous function, you must use fplot even if your function is not named 'f'.
Now we can test it like: f = another function. On the next line you will write a statement to plot the function. If you really want some way to inspect the input variables of an anonymous function, here is a little anonymous function to do that for you. When you convert symbolic functions, their input arguments appear in front of other variables, and all other variables are sorted alphabetically. %// you do not specify them, MATLAB automatically chooses the order as specified in the documentation:īy default, when you convert symbolic expressions, the order is alphabetical. They will then all appear as separate inputs to the anonymous function by name. How can we get around this Lets start with a Fibonacci sequence example. When we write an anonymous function, it isnt 'named' (hence, 'anonymous'), so it cant call itself by name. It therefore needs some way to refer to itself. %// as another example where I use an array rather than a cell array containing the values. Recall that a recursive function is a function that calls itself. %// The first input argument will be t and the second will be an array of If you used matlabFunction to generate an anonymous function from a symbolic expression, you can specify the input arguments in the call to matlabFunction using the Vars input.Īs an example from the documentation. Most function introspection functions that would work on a regular function will also work on an anonymous function if you want to get information about the input arguments programmatically. If you can't tell, this doesn't make it "anonymous", it just makes it poorly documented. f = am a sneaky function') įrom this it's easy to infer that f takes two input arguments ( a and b).Īs far as what these input arguments should be and what that function does with those arguments, you'd have to look at the function component of the function handle or ask whoever created it. Now that we've gotten the nomenclature out of the way, if you are given a function handle, you can actually just display the function handle (using disp) and see the function definition (complete with input arguments). Now the same function can be called using either myfunc() or myfunc2(). With a function handle, however, it is assigned to a variable and that variable's name is used to call the function.
It refers to the fact that this function does not have a static name like a function within an m-file.įor example, if you create the following function, it can only be used by it's name, myfunction. Any variables that are not found in the argument list are inherited from. The "anonymous" in anonymous function doesn't refer to the contents being unknown. Anonymous functions are defined using the syntax.