randsample - Random sample
Syntax
y = randsample(n,k)
y = randsample(population,k)
y = randsample(...,replace)
y = randsample(...,true,w)
y = randsample(s, ...)
Description
y = randsample(n,k) returns a k-by-1 vector y of
values sampled uniformly at random, without replacement, from the
integers 1 to n.
y = randsample(population,k), where population is
a vector of two or more values, returns a vector of values sampled
uniformly at random, without replacement, from the values in the vector population.
The orientation of y (row or column) is the same
as population.
y = randsample(...,replace) returns a sample
taken with replacement if replace is true,
or without replacement if replace is false.
The default is false.
y = randsample(...,true,w) returns a weighted
sample taken with replacement, using a vector of positive weights w,
whose length is n. The probability that the integer
i is selected for an entry of y is w(i)/sum(w).
Usually, w is a vector of probabilities. randsample does
not support weighted sampling without replacement.
y = randsample(s, ...) uses the stream s for
random number generation. s is a member of the RandStream class. Default is the MATLAB default
random number stream.
Examples
The following command generates a random sequence of the characters A, C, G,
and T, with replacement, according to the specified
probabilities.
R = randsample('ACGT',48,true,[0.15 0.35 0.35 0.15])See Also
rand, randperm
 | random (ProbDist) | | randtool |  |
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