generating random numbers from a range

Hello, I want to generate random numbers from a range. Example I want 1000 random numbers in the range from 1000 to 3000. How can I do this in matlab, because what I could get using the rand command is only in the range [0,1]. Thanks!

Edit Nr. 1 I think the rand command gives UNIFORMLY distributed random numbers. Is there a way to generate samples from NORMALLY distributed functions ( randn command), but instead of mean and std, I want to enter initial value and ranges. I want this for a stochastic modelling (sensitivity analysis) purpose.

Answer 1

[Andrei Bobrov]

please read about function rand

out = 1000 + 2000*rand(1000,1);

OR

use function unifrnd from Statistics Toolbox

out = unifrnd(1000,3000,1000,1);

[Meh]

Thanks andrei that was the answer for my previous question. Now I want to ask one more question. I think the rand command gives UNIFORMLY distributed random numbers. Is there a way to generate samples from NORMALLY distributed functions (randn command), but instead of mean and std, I want to enter initial value and ranges. I want this for a stochastic modelling (sensitivity analysis) purpose.

[Andrei Bobrov]

k = randn(1000,1);

km = min(k);

out = (k-km)/(max(k)-km)*2000+1000;

hist(kn,1000:100:3000)

But this is distribution - not normal distribution

Answer 2

[Walter Roberson]

Normal distribution is, by definition, infinite tail on both sides. If you want your generated values to be confined to a finite range, you do not have a normal distribution.

Perhaps you want a beta distribution.