RANDGAMMA  RANDGAMMA Generate Gamma-Distributed Random Variable


Usage
 
 Generates random variables with a gamma distribution.  The general
 syntax for its use is
 
    y = randgamma(a,r),
 
 where a and r are vectors describing the parameters of the
 gamma distribution.  Roughly speaking, if a is the mean time between
 changes of a Poisson random process, and we wait for the r change,
 the resulting wait time is Gamma distributed with parameters a 
 and r.
 