how to write the mathlab code for the sigma formula below?

suppose I have a value

Eval (X_1) = 40
Eval (X_2) = 30
Eval (X_3) = 70
Eval (X_4) = 80
Eval (X_5) = 24
Eval (X_6) = 35
Eval (X_7) = 86
Eval (X_8) = 74
Eval (X_9) = 63
Eval (X_10) = 52

F = sigma (Eval (X_ (h))) where h = 1 to h = 10

please help mathlab code for sigma F formula?

[Mario Malic]

Please, go to MATLAB Onramp and do the tutorial. It will help you immensely to start programming.

[John D'Errico]

Learn how to use vectors. Do not try to create numbered variables like this, as this is a programming style that will only bridge you programming pain.

[Muhammad Sam'an]

give me real solution please?

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

Answer 1

[Walter Roberson]

sum(Eval([X_1, X_2, X_3, X_4, X_5, X_6, X_7, X_8, X_9, X_10]))

this assumes that Eval is a vector, or that Eval is a function that is vectorized.

If Eval is a function that is not vectorized then

sum(arrayfun(@Eval, [X_1, X_2, X_3, X_4, X_5, X_6, X_7, X_8, X_9, X_10]))

[Muhammad Sam'an]

>> uji

745

535

715

505

535

I want to add the values above using the sigma notation?

I use the sum notation or

eg F = sum (eval)

where eval is the value above

please for a solution sir?

[Muhammad Sam'an]

 op_size = 5;
%sigma=0
%q=0
for count = 1:pop_size
   %fprintf('count =%d\n',count);
   c = [10 2 20 11
    12 7 9 20 
    4 14 16 18];
    [m,n] = size(c);
    phi = 1:m*n;
    s = [15
    25
    10
    ];
    d = [5 15 15 15];
    
    for count2=1:length(phi)
       % fprintf('count2=%d\n',count2);
        used_idx = randi(length(phi));
        trial = phi(used_idx);
        phi(used_idx) = [];
        i = [1+mod((trial-1),m)];
        j = [1+mod((trial-1),n)];
        x(i,j) = min(s(i),d(j));
        s(i) = s(i)-x(i,j);
        d(j) = d(j)-x(i,j);
     Eval=0;
     for j=1:n
         for i=1:m
             if x(i,j)>0
                Eval=Eval+c(i,j)*x(i,j);
               %fprintf('Eval=%d\n',Eval);
             end
         end
     end
    end
 disp(Eval)
end

this is my complete mathlab code, i want to add up the value of eval.

[Steven Lord]

Initialize Eval to 0 before the for count = 1:pop_size statement. This will accumulate all the values added to it in the iterations over count, count2, j, and i.

[Walter Roberson]

For whatever reason, the poster has a requirement that they use "sigma" (sum) for this purpose, so incremental addition is not an acceptable solution to them.

I posted exact code for them at https://www.mathworks.com/matlabcentral/answers/607961-how-to-make-sigma-from-my-problem-using-math-lab-code#answer_508396