How do you call a nested function?

Hello. I understand how a nested function works, but I'm having a problem calling it in the command window. I don't know if I'm calling it wrong or not.

Answer 1

[Wayne King]

You want to put the nested function inside another function (as the term nested implies) and then call the top-level function. As an example, create the following file, evenodd.m

     function [even, odd] = evenodd(x)
     even = evensamples(x);
     odd = oddsamples(x);

        function even = evensamples(x)
                  even = x(1:2:end);
        end
        function odd = oddsamples(x)
                 odd = x(2:2:end);
        end
    end

Save the above file evenodd.m in a folder on the MATLAB path and then call

 >> x = randn(16,1);
 >> [even,odd] = evenodd(x);

Note that evenodd() calls two nested functions evensamples() and oddsamples()

Answer 2

[Jan]

You cannot call a nested function from the outside, e.g. from the command line, directly. This is the nature of a nested function. Sub-functions cannot be called directly also.