Hi ,I need some help with this PSO optimization code, "not enough input arguments "error message (Main pso used is The yarpiz's).

function Y1 = costfunction(x)
V = 384*ones(1,10);
Q = 60*ones(1,10);
N = 0.4*ones(1,10);
R = [7, 12, 8, 11, 9, 13, 7, 12, 10, 6];
Sbk = [1,-1,1,-1,1,-1,1,-1,1,-1];
for k=2:10
    y(1)=((V(1)*(x(1)-0.3)*Q(1)*R(1))/N(1))*((1+Sbk(1))/2)*Sbk(1)^2+...
        (V(1)*(0.3-x(1))*Q(1)*R(1))*((1+Sbk(1))/2)*Sbk(1)^2;
    y(k)=((V(k)*(x(k)-x(k-1))*Q(k)*R(k))/N(k))*((1+Sbk(k))/2)*Sbk(k)^2+...
        (V(k)*(x(k-1)-x(k))*Q(k)*R(k))*((1+Sbk(k))/2)*Sbk(k)^2;
    Y1 = sum(y);
end
end

[John D'Errico]

When you post a PICTURE of your code, you make it impossible for someone to help you. Do you expect someone to jump to type in that mess of code?

Is there a reason why you want to make it more difficult for somone to help you? Is that really your goal here?

I might comment also that it seems silly to redefine y(1) INSIDE the loop, since y(1) should only ever be defined once. And then, even sillier to compute Y1 = sum(y) INSIDE the loop. If you like to waste CPU cycles that badly, computing things over and over again for no reason, I can't wait until you have a significant piece of code that runs too slowly, and you want help then.

[Jan]

A hint: The readers are not all "guys" and I am not your buddy, but I do not know, if John is.

I have problems to read the tiny image of your objective function.

Answer 1

[Jan]

I'm not sure what you are asking for, but this is simplified version of your function without a loop:

function Y1 = costfunction(x)
dx  = [x(1) - 0.3, diff(x)];
V   = 384;
Q   = 60;
N   = 0.4;
R   = [7, 12, 8, 11, 9, 13, 7, 12, 10, 6];
Sbk = [1,-1,1,-1,1,-1,1,-1,1,-1];
y   = (V * dx * Q .* R * (1 / N - 1)) .* ((1 + Sbk) / 2) .* Sbk.^2;
Y1 = sum(y)
end

[Jan]

@Abdelkrim: Remember, that for Matlab these are all numbers. So for a solution, the programmer does not need any of the information about the meaning of the values, because the code does not need it also.