How do I generate a random number with beta distribution?

You can use the function betarnd, but you'll need to do some normalizing to get it in the standard form used by MATLAB (see Beta distribution). If you define

, then x is in the interval

as required, so this should generate a suitable number:

a = alpha+1;
b = beta+1;
r = betarnd(a,b);
your_random_number = r*D+LB;

3 个评论
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Andrew Newell 2021-4-20

Because in MATLAB's definition of the beta distribution, the exponents are

and

. So that gives you back

and

Ana Carolina da Silva Pacheco 2021-4-21

Got it, thank you, that solved my problem.

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MATLAB Language Fundamentals Matrices and Arrays Creating and Concatenating Matrices

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