Exclude negative values from random number generator

Hi, Just a quick question.

I generate a series of normally distributed random numbers with mean 1.5 and standard deviation 0.3.

d1 = 1.5 + 0.3.*randn(100,1)

Anyone know how I can exclude all the negative results?

Thanks a lot!

Ying

Answer 1

[Walter Roberson]

d1(d1 < 0) = [];

Note that the result will not be a normal distribution and will not have mean 1.5 or standard deviation 0.3 !