rand

Random Number.

Syntax

  • M = rand

  • M = rand(n)

  • M = rand(x1, x2, ... , xN)

  • M = rand(sz)

  • M = rand(x1, x2, ... , xN, classname)

  • M = rand(x1, x2, ... , xN, 'like', var)

Input argument

  • n - a variable: n-by-n matrix will be generated.

  • x1, x2, ... , xN - x1-by-...-by-xN values

  • classname - a string: 'single' or 'double'

  • var - a variable: single or double

Output argument

  • M - a matrix of random numbers.

Description

rand returns a matrix with random elements uniformly distributed on the interval [0, 1].

seed can be modified using rng.

The Mersenne Twister designers consider 5489 as default seed. Nelson uses it as default seed (0).

Bibliography

M. Matsumoto and T. Nishimura, Mersenne Twister: A 623-dimensionally equidistributed uniform pseudorandom number generator, ACM Trans. on Modeling and Computer Simulation Vol. 8, No. 1, pp. 3–30, January 1998

Examples

rng('default');
rand
rng('default');
rand
rng('default');
rand(6)
rng('default');
rand(3, 2, 3)
rng('default');
rand(3, 2, 'single')
rng('default');
v = single([3, 3]);
rand(3, 2, 'like', v)

See also

rng, randn, eye.

History

Author

Allan CORNET

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