How to create a random Bernoulli matrix ?
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Mohab Mostafa
on 6 Oct 2015
Commented: Weijian Liu
on 4 Jun 2022
I want to create a 256x256 random Bernoulli matrix, how to do that in matlab ?
1 Comment
Bilal Siddiqui
on 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.
Accepted Answer
Robert Dylans
on 7 Oct 2015
Edited: Robert Dylans
on 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 Comments
Walter Roberson
on 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
on 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
More Answers (2)
Bilal Siddiqui
on 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.
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