Learn more about MATLAB

Generating Random Numbers

The rand function returns uniformly distributed random numbers between 0 and 1.

rand(1,5)

ans =

    0.8147    0.9058    0.1270    0.9134    0.6324

MATLAB software initializes a default stream at startup. The rand function accesses the default stream and draws a set of numbers to create the output. This means that every time rand is called, the state of the default stream is changed and the output is different.

A=rand(1,5);B=rand(1,5);
A,B

A =

    0.0975    0.2785    0.5469    0.9575    0.9649

B =

    0.1576    0.9706    0.9572    0.4854    0.8003

• rand returns pseudorandom numbers from a uniform distribution.

• randn returns pseudorandom numbers from a normal distribution.

• randi returns pseudorandom numbers from a uniform discrete distribution.

Random Numbers

Managing the Default Stream

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