Thjis is the expected behavior. "fhandle = @fun" runs inside the function 1. There the functions, which are defined inside function 2, are unknown and therefore @fun is invalid. Of course @fun is valid, when you run the debugger and are inside function 2 already.
Summary: You can create function handles only to functions, which are currently visible.
Solution: Use another method to tell function 2 which subfunction should be used:
function [out] = function2(Fcn, Data)
% Fun: String to specify the subfunction:
switch lower(Fcn)
case 'fcn1'
fhandle = @fcn1;
case 'fcn2'
fhandle = @fcn2;
otherwise
error('Unknown function: %s', Fcn);
end
plot(1:10, fhandle(1:10));
end
function y = fcn1(x)
y = sin(x);
end
function y = fcn2(x)
y = cos(x);
end
Alternatively:
Create M-files for the sub-functions. Then their handles are visible from anywhere.
