storing values of for loop in a long function

Question

Hamish 2012-7-2

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42527-storing-values-of-for-loop-in-a-long-function

So I have seen the tutorial on how to save every value of for loop in a matrix

eg:

for i=1:10
y(i)=i+rand
end

However, it doesn't seem to be too straight forward when the result of y is a consequence of a big function. I mean, if the variables a, b, c, d are dependent on i and u (a matrix) is dependent on a, b, c, d and finally y is dependent on u.

How do I solve this issue?

Hope I'm being clear enough. Cheers

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Jan 2012-7-2

编辑：Jan 2012-7-2

Please post more details, most of all what you have tried so far and which problems occurred. Currently "it doesn't seem to be too straight forward" is not exactly enough to solve your problem.

Actually the solution could be very straight, but I assume, that I simply do not know the problem.

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Answer 1

Walter Roberson 2012-7-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42527-storing-values-of-for-loop-in-a-long-function#answer_52405

在 MATLAB Online 中打开

for i=1:10
  a = some function of i
  b = some function of i
  c = some function of i
  d = some function of i
  u = some function of a, b, c, d
  y(i) = some function of u
end

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Jan 2012-7-3

编辑：Jan 2012-7-3

Whoops! I've posted nearly same but with rand * i as functions u = [a,b; c,d] and y(i) = trace(u). Has my message been deleted by accident? It is possible, that I've deleted it by myself.

Hamish 2012-7-3

Thanks for that. That worked. I guess when I attempted this earlier, there was some other problem due to which I couldn't get the answer.

Simon, I understand I wasn't very specific. But fortunately, I have got the response. The problem was I was confused on whether to write y(i) or/and y(u) at the same time writing a(i), b(i)... This made it quite complicated when the function is very long, more so when there is functions within the function.

Thanks once again for the quick response.

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