How to reset a variable in a for loop?
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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
X=1+rand()
Y=["A","B","C"];
end
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 Comments
Rik
on 22 Sep 2021
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).
Answers (2)
Adam Danz
on 21 Sep 2021
Edited: Adam Danz
on 21 Sep 2021
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();
...
end
Of course in this example, you could generate all x values at once using x = 1+rand(1,n);
0 Comments
David Hill
on 21 Sep 2021
Use indexing.
X=1+rand(1,10);
for i=1:10
Y=X(i)+5;%whatever you do.
end
0 Comments
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