How to put different seed in a multidimensional matrix

1 vue (au cours des 30 derniers jours)
chan
chan le 13 Juil 2022
Commenté : KSSV le 14 Juil 2022
I have a multidimensional matrix where n=10, k=3
X = rand([n,k,n]);
How to put different seed number for each matrix
X(:,:,1)
X(:,:,2)
X(:,:,3)
.....
.....
X(:,:,10)
Thse seed no. for each matrix should be different.

Réponse acceptée

KSSV
KSSV le 13 Juil 2022
n = 10; k = 3 ;
R = zeros(n,k,n) ;
for i = 1:n
rng(i) % i can be a positive integer
R(:,:,i) = rand(n,k) ;
end
  2 commentaires
chan
chan le 13 Juil 2022
Thank you for giving me the solution but i dnt want the random no. to be repeated for every run. How to do that?
KSSV
KSSV le 14 Juil 2022
Off course the number are random and they don't repeat.....also note that, there is no ncecessity to set seed for each iteration. You just need:
R = rand(10,3,10) ;

Connectez-vous pour commenter.

Plus de réponses (2)

Chunru
Chunru le 13 Juil 2022
Not sure why you have to do this. But it can be done as follows:
n = 10; k=3;
X = zeros([n,k,n]);
seeds = [1:n]; % your seed numbers
for i=1:n
rng(seeds(i));
X(:, :, i) = rand(n, k);
end
  1 commentaire
chan
chan le 13 Juil 2022
Modifié(e) : chan le 13 Juil 2022
Thank you for giving me the solution but i dnt want the random no. to be repeated for every run. How to do that?

Connectez-vous pour commenter.


Steven Lord
Steven Lord le 13 Juil 2022
You might think that by changing the seed so frequently you're making the numbers "more random". You're not, as stated by the Note on this documentation page.
Call rng once before you start generating random numbers. Generate your numbers. Then if you need a different seed for your next run call rng again with a different seed.

Catégories

En savoir plus sur Creating and Concatenating Matrices dans Help Center et File Exchange

Tags

Produits


Version

R2016a

Community Treasure Hunt

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

Start Hunting!

Translated by