How to create a random Bernoulli matrix ?
72 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Mohab Mostafa
le 6 Oct 2015
Commenté : Weijian Liu
le 4 Juin 2022
I want to create a 256x256 random Bernoulli matrix, how to do that in matlab ?
1 commentaire
Bilal Siddiqui
le 2 Oct 2018
It's simple. A Bernoulli trial produces one of only two outcomes (say 0 or 1). You can use binord. For example p=0.2; n=256; A=binornd(1,p*ones(n));
produces an nxn array of Bernoulli trials which are either 0 or 1 in each outcome. Hope this answers your question.
Réponse acceptée
Robert Dylans
le 7 Oct 2015
Modifié(e) : Robert Dylans
le 7 Oct 2015
p=0.5; %probability of success
n=256;
A=rand(n);
A=(A<p)
or
p=0.5;
A=(rand(256)<p)
5 commentaires
Walter Roberson
le 7 Oct 2015
Careful, probability 1/2 might not be! See http://uk.mathworks.com/matlabcentral/answers/246999-probability-1-2-with-matlab-random-number-generators
Walter Roberson
le 7 Oct 2015
If you have a matrix A of 0 and 1 then you can make it a matrix of -1 and +1 by using
A*2 - 1
Plus de réponses (2)
Byron McMullen
le 15 Fév 2021
I use this.
bernoulli_matrix = randsrc(rows,cols,[-1,1]);
1 commentaire
Bilal Siddiqui
le 2 Oct 2018
It's simple. A Bernoulli trial produces one of only two outcomes (say 0 or 1). You can use binord. For example p=0.2; n=256; A=binornd(1,p*ones(n));
produces an 256x256 array of Bernoulli trials which are either 0 or 1 in each outcome. Hope this answers your question.
0 commentaires
Voir également
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!