

   TThhee GGaammmmaa CCoouunntt DDiissttrriibbuuttiioonn

        dgammacount(y, m, s)
        pgammacount(q, m, s)

   AArrgguummeennttss::

          y: vector of frequencies

          q: vector of quantiles

          m: vector of probabilities

          s: vector of overdispersion parameters

   VVaalluuee::

        These functions provide information about the gamma
        count distribution with parameters `m' and `s'. `dgam-
        macount' gives the density and `pgammacount' gives the
        distribution function.

        The gamma count distribution with `prob' = m has den-
        sity

          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.

   AAuutthhoorr((ss))::

        J.K. Lindsey

   SSeeee AAllssoo::

        `dpois' for the Poisson, `ddoublepois' for the double
        Poisson, and `dmultpois' for the multiplicative Poisson
        distributions.

   EExxaammpplleess::

        dgammacount(5,5,0.9)
        pgammacount(5,5,0.9)

