Random number generator between two numbers - MatL

问题:

I am trying to create a random number generator between two numbers in MatLab but I am unable to figure out the correct equation.

I know that you can use the rand() function to create random numbers but what if I wanted to have numbers only generated between -.5 and .5? Is this possible to accomplish in MatLab?

回答1:

The answer for adjusting the interval is listed in the help section on rand() :

Example 1

Generate values from the uniform distribution on the interval [a, b]: r = a + (b-a).*rand(100,1);

回答2:

it is easy if you want get a random value between -.5~.5 here as an example

rand(1)-.5

more generally, to generate random value between [a b] you can use a generator like this

rand(1）×（b-a)+a

回答3:

The simple way to do that is use

randi([min, max])