Random Laplacian distribution in a specified interval

I try to write a function in matlab that generate a Random Laplacian distribution with output values in the range [0 0.5]; Could anyone suggest me how can I do this ? Thank you.

Answer 1

[Jeff Miller]

Here is a quick and dirty way to do this with Cupid:

location = 0;  % set whatever Laplacian parameters you want.
scale = 1;
lower_limit = 0;  % set whatever boundaries you want
upper_limit = 0.5;
trunc_lap = TruncatedX(Laplace(location,scale),lower_limit,upper_limit);  % make the truncated distribution
r = trunc_lap.Random(1000,1);  % generate a sample of random numbers
histogram(r);  % view the random sample

The Laplace pdf and cdf are pretty simple so there is probably a more direct route if you want to work out the math.

[Gherbi Nabil]

Thank you, this is what i searched.