Stixbox Function 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}