Gamma Count {rmutil} | R Documentation |
dgammacount(y, m, s) pgammacount(q, m, s)
y |
vector of frequencies |
q |
vector of quantiles |
m |
vector of probabilities |
s |
vector of overdispersion parameters |
These functions provide information about the gamma count
distribution with parameters m
and s
. dgammacount
gives the density and pgammacount
gives the distribution function.
The gamma count distribution with prob
= m has density
p(y) = pgamma(m s, y s, 1)-pgamma(m s, (y+1) s, 1)
for y = 0, ..., n where pgamma(m s, 0, 1)=1.J.K. Lindsey
dpois
for the Poisson, ddoublepois
for
the double Poisson, and dmultpois
for the multiplicative Poisson distributions.
dgammacount(5,5,0.9) pgammacount(5,5,0.9)