Version 3.0.01 (2,27 KB) von Jos (10584)
pseudorandom integers from a specified discrete distribution
Aktualisiert 2 Mär 2019

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RANDP - pseudorandom integers from a specified discrete distribution

R = randp(P, N) returns an N-by-N matrix containing pseudorandom
integers drawn from a specified discrete distribution on 1:numel(P).
The distribution is specified by the relative values of P so that a
value K is present approximately "P(K)/sum(P) times in the matrix R.
All values of P should => 0, NaNs are set to 0.

The other arguments to randp specify the size of R in the same way as
matlab's own functions do: randp(P, N) returns an N-by-N matrix,
randp(P,M,N) and randp(P, [M N]) return M-by-N arrays, etc.

% random values from [1 2 4] and a bias for 2
R = randp([1 2 0 1], 1, 100) ; % 100 values
histc(R, 1:4) % -> ~25 ~50 0 ~25

% create a random, but biased DNA sequence
C ='AGCT', P = [4 1 1 2]
DNA = C(randp(P, 1, 50))

Zitieren als

Jos (10584) (2024). randp (https://www.mathworks.com/matlabcentral/fileexchange/8891-randp), MATLAB Central File Exchange. Abgerufen .

Kompatibilität der MATLAB-Version
Erstellt mit R2018b
Kompatibel mit allen Versionen
Windows macOS Linux
Mehr zu Random Number Generation finden Sie in Help Center und MATLAB Answers

Inspiriert: Generic Fractal Generator

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Version Veröffentlicht Versionshinweise

new image


improved help and coding

slightly more effective algorithm

updated for newer releases

implementation of faster algorithm using histc

MATLAB Central test

fixed error when called with scalar size argument