I want my simulation/function to run n (is defined) number of times. The function is a matrix. And will give different matrices each time I run it (this is been taken care of) I just need to produce a loop which will simulate my function n ti

Hello! I want my simulation/function to run n (is defined) number of times. The function is a matrix. And will give different matrices each time I run it (this is been taken care of) I just need to produce a loop which will simulate my function n times. I have the following code, which does not work.

 % code
  for r=1:7
  y(r) = myfunction;
end

[Kai Domhardt]

What does myfunction look like?

What error message is returned when you try to run it?

[Neje]

This is the code. The error it was passing was about the dimensions. I think here Icannot put i in the brackets as it is a matrix. But at the same time I cannot increment it without doing so. Correct?

% code

FUNCTION X=ABC(k,p,r)

. . . .

b_s=...

For i=1:r

b_s(i)=b_s(i+1)

X=b_s

end

end

[Kai Domhardt]

It is hard to get the full picture without the explicit error message and only very reduced program code. If you can provide more information, I am happy to help.

[Rik]

Try to write a MWE, that way we can run code with plausible inputs and we know what code to fix.

[Neje]

It is like following, where L, x_s, c_s and p_s all are matrices.Hence b_s is also a matrix, which is my function. I want to calculate X 6 times. And need a loop for the same.

    % code
function X=ABC(k,p,r)
b_s=(L*x_s+del*c_s)*p_s
X=b_s
end

[Rik]

You should really try to write an example that we can debug independently. If you can't share any meaningful details, hire a consultant instead of posting on an online forum.

[Kai Domhardt]

Try

temp_1 = L*x_s
temp_2 = del*c_s
temp_3 = temp_1 + temp_2
b_s = temp_3 * p_s

instead of

b_s=(L*x_s+del*c_s)*p_s

and check which line your program fails on.

[Neje]

Thanks it works! :) and I could form the loop.

Answer 1

[Neje]

Just put an empty function at the start, before the function as A=[] and increment it n times with A=[A;B] after the calculation of B matrix.