By default,randreturns normalized values (between 0 and 1) that are drawn from a uniform distribution. To change the range of the distribution to a new range, (a,b), multiply each value by the width of the new range, (b–a) and then shift every value bya.

First, initialize the random number generator to make the results in this example repeatable.

rng(0,'twister');

Create a vector of 1000 random values. Use therandfunction to draw the values from a uniform distribution in the open interval, (50,100).

a = 50; b = 100; r = (b-a).*rand(1000,1) + a;

Verify the values inrare within the specified range.

r_range = [min(r) max(r)]

r_range = 50.0261 99.9746

The result is in the open interval, (50,100).