empty plot matlab code?

when i try to run the following code, i get an empty plot, and the "initial" variable is NaN, what is the problem? "note: The meijerG function is attached as an m.file"

    close all;
ls1=3;
change=2; %k

lmda=.1; step = 0.1; y = 0.00001:step:4; initial=0; p=1;pint=.5; for d=0:2 for r=0:2 for w=0:2 for l=0:2

                %                  change=(-n-r-w).*(2/ls1);
                n=change.*ls1.*5+r+w;
                aj=(gamma(w+change.*ls1.*.5+r))./(gamma(change.*ls1.*.5+r));
                bj=(gamma(w-d-.5.*change))./(gamma(-d-.5.*change));

                c=((-1).^l.*exp(.5.*(-lmda.*p+ls1+lmda*pint)).*(lmda.*p.*.25).^d.*(.25.*ls1.*lmda.*pint).^r)./(4.^(1+change.*.25-1+.25.*change.*ls1).*factorial(d).*factorial(r).*gamma(d+.5.*change));
                f=c.*((aj.*bj)./(((-1).^(-w))).*2^(-change.*ls1.*.5-r-w).*factorial(w).*((factorial(n+l-1))./(factorial(l).*factorial(n-l)))).*y.^(change.*.5+l+d).*MeijerG({[1-change./2-d-l], []}, {[0], [-.5.*change-d-l]}, (y/2));
                initial=initial+f;
            end
        end
    end
end

plot(y, initial,'b');

[Adam]

Have you tried it with a non-parallel for loop and used the debugger to find out what is actually in the different variables? Also break down the lines into more variables so you can more easily identify which part introduces the NaN.

[Stephen23]

@Deema Tashman: your code is incredibly untidy, badly indented, and hard to read. Please learn to use the MATLAB default indentation, which goes a long way to making code less buggy. It is easy to indent code correctly using the MATLAB editor: select all of the code and press ctrl+i.

[Deema42]

no i didn't actually. i don't know how, i tried to see if there is a division by 0, but i didn't find a problem

[Adam]

In the editor just click in the column immediately to the right of the line number on the left to place a breakpoint. Then when you run your code it will stop here and you can look at your variables on the command line.

Replacing a parfor loop with a for loop is trivial and so is breaking down a line of code into multiple variables, apart from the usual issue of trying to find an intelligent name for intermediate maths variables, but since you are just going with letters of the alphabet anyway there's a fair few of them to go at.