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st: How to generate a random variable with PDF gamma(a,b,g,x)


From   "Tiago V. Pereira" <tiago.pereira@mbe.bio.br>
To   statalist@hsphsun2.harvard.edu
Subject   st: How to generate a random variable with PDF gamma(a,b,g,x)
Date   Mon, 13 Jun 2011 16:04:19 -0300 (BRT)

Dear Statalisters,

I would like to generate a gamma random variable with probability density
function given by gamma(a,b,g,x) where a = 3 (shape), b = 0.04 (scale), g
= 0.80 (location).

I believe that the trick is to generate x correctly from a uniform
distribution, since I am looking at x>g only.

The pdf should look like this:

http://tinypic.com/r/5yrxgg/7

Any suggestions?

All the best,

Tiago



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