how to make return value in for loop ?

i have a code :

function rad = Radial(n,m);
radial=0; %zeros(size(r)); 
for s=0:(n-abs(m))/2
    c=(-1)^s*((factorial(n-s))/(factorial(s)*factorial(((n+abs(m))/2)-s)
    *factorial(((n-abs(m))/2)-s)))
    radial=radial+c*(radial^(n-2*s));
end
return radial;

but, i can return the value of radial, and then compute the radial value to loop again. How to fix ? thanks

Answer 1

[Stephen23]

MATLAB does not need a return statement to return a value. To return a value you simply need to list it as an output argument of the function:

function [output1,output2,...] = fun_name(input1,input2,...)

You have specified an output argument rad, but then have totally ignored this inside your code an never allocated any value to it. You should try something like this:

function rad = Radial(n,m);
rad = ... whatever rad is;
end

Of course this is explained quite clearly in the introductory tutorials:

http://www.mathworks.com/help/matlab/getting-started-with-matlab.html

and also the function documentation:

http://www.mathworks.com/help/matlab/ref/function.html

Read the documentation. It tells you how MATLAB works.

If you want to store all of the values of rad in a loop then you can use indexing.

[ElizabethR]

hello Stephen.. i am the begginer in matlab. Thanks you so much for your explanation. it's very helping me. God Bless You :)