Stixbox Function
Last update : 21/4/2006
rgamma - Random numbers from the gamma distribution
Calling Sequence
- x = rgamma(n,a [,s])
Parameters
-
n : positive integer or a vector [lig,col] of integers
-
a,s : positive reals.
-
x : n-vector or a n-matrix of random numbers chosen from Gamma distribution with parameter a
Description
Random numbers from the gamma distribution (inversion method)
The gamma density function with parameter a is :
x --> (s^a)*x.^(a-1)exp(-s*x)./Gamma(a)1_{x>=0}