MATLAB Answers

How to reset a variable in a for loop?

11 ビュー (過去 30 日間)
Andrea Miceli
Andrea Miceli 2021 年 9 月 21 日
コメント済み: Rik 2021 年 9 月 22 日
Hello evreyone,
I was wondering if there is a way to reset variables in a for loop, I am going to show you an example to be as clear as possible,
for i=1:10
What I want to achieve is to clean up the X variable, that is, every time the for loop starts over, the X variable is cleared and recreated. I know it is very expensive for the pc, but all the values obtained in one click are stored in another variable and I need to recreate X. (I know well that in the example I have proposed the values are overwritten, but in the code that I am writing at each loop the values in the variable increase and are not overwritten)
  7 件のコメント
Rik 2021 年 9 月 22 日
Then it seems something like I suggested in your duplicate question should do what you want. Simply create your variables once and then pass them as parameters to your function. Using a struct can help to limit the number of input parameters so you don't get confused by the order (and so you can easily add new ones).


回答 (2 件)

Adam Danz
Adam Danz 2021 年 9 月 21 日
編集済み: Adam Danz 2021 年 9 月 21 日
The example isn't very clear but I think you want to preserve the random X values within the loop. If so,
n = 10; % number of iterations
x = nan(1,n);
for i = 1:n
x(i) = 1+rand();
Of course in this example, you could generate all x values at once using x = 1+rand(1,n);

David Hill
David Hill 2021 年 9 月 21 日
Use indexing.
for i=1:10
Y=X(i)+5;%whatever you do.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by