how do I calculate all values in for loop?

4 次查看（过去 30 天）

显示更早的评论

MUNKHBOLOR BAIGALI 2020-9-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591424-how-do-i-calculate-all-values-in-for-loop

评论： MUNKHBOLOR BAIGALI 2020-9-10

Hello. please help me

I want to calculate in each x = [0, 2, 5, 7, 8, 9, 10 ] -----> Output P equation.

I tried to write in below code. BUT when its only x = 10, result calculated. I want to calculate all x values.

How do I do?

PLEASE

m-file

function [Tc, P] = myfun1(Ppv_rated, x, G , Gref, Kt, Tref, Tamb)

for x = [0,2,5,7,8,9,10]

Tc = Tamb + (0.0256 * G);

P = (Ppv_rated * x) .* (G/Gref).*(1 + Kt*(Tc - Tref));

end

COMMAND WINDOW

>> Ppv_rated = 250;

>> G = [5.75, 6, 6.365, 6.5, 6.185, 5.75, 5, 4.8, 5.5, 6.18, 6.15, 5.8];

>> Gref = 1000;

>> Kt = -0.485;

>> Tref = 25;

>> Tamb = [25.63, 26.7, 26.610, 25.46, 24.9, 24.01, 23.16, 23.01, 23.54, 23.78, 24.45, 25.3];

>> [Tc, P] = myfun1(Ppv_rated, x, G , Gref, Kt, Tref, Tamb)

RESULT

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

KSSV 2020-9-10

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591424-how-do-i-calculate-all-values-in-for-loop#answer_492382

编辑：KSSV 2020-9-10

在 MATLAB Online 中打开

You need to save each value in aloop.

function [Tc, P] = myfun1(Ppv_rated, x,  G , Gref, Kt, Tref, Tamb)
m = numel(x); 
n = numel(Tamb) ; 
Tc = zeros(m,n) ;
P = zeros(m,n) ; 
for i = 1:length(x)
Tc(i,:) = Tamb + (0.0256 * G) ;
P(i,:) = (Ppv_rated * x(i)) .* (G/Gref).*(1 + Kt*(Tc(i,:) - Tref));
end
end

You need not to use a loop and you can use all vector operations.

function [Tc, P] = myfun1(Ppv_rated, x,  G , Gref, Kt, Tref, Tamb)
Tc = Tamb + (0.0256 * G) ;
PP = ((Ppv_rated * x) .* ((G/Gref).*(1 + Kt*(Tc - Tref)))')';
end

8 个评论
显示 6更早的评论隐藏 6更早的评论

MUNKHBOLOR BAIGALI 2020-9-10

but it didn't work

MUNKHBOLOR BAIGALI 2020-9-10

another m-file using PSO code worked. But I don't know why myfunc m-file doesn't work.

请先登录，再进行评论。

VBBV 2020-9-10

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/591424-how-do-i-calculate-all-values-in-for-loop#answer_492385

编辑：VBBV 2020-9-10

在 MATLAB Online 中打开

 %if true
    % code
 % end
x = [0 2 5 7 8 9 10];
for i = 1:length(x)
  for j = 1:length(Tamb)
   Tc(j)= Tamb(j) + 0.0256*G(j);
   P(i,j) = Ppv_rated*x(i)*(G(j)/Gref)*(1+Kt*(Tc(j)-Tref));
  end 
end