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()
