Hjorth                package:rmutil                R Documentation

_H_j_o_r_t_h _D_i_s_t_r_i_b_u_t_i_o_n

_D_e_s_c_r_i_p_t_i_o_n:

     These functions provide information about the Hjorth distribution
     with location parameter equal to 'm', dispersion equal to 's', and
     family parameter equal to 'f': density, cumulative distribution,
     quantiles, log hazard, and random generation.

     The Hjorth distribution has density

       f(y) = (1+s y)^(-f/s) exp(-(y/m)^2/2) (y/m^2+f/(1+s y))


     where m is the location parameter of the distribution, s is the
     dispersion, and f is the family parameter.

_U_s_a_g_e:

     dhjorth(y, m, s, f, log=FALSE)
     phjorth(q, m, s, f)
     qhjorth(p, m, s, f)
     hhjorth(y, m, s, f)
     rhjorth(n, m, s, f)

_A_r_g_u_m_e_n_t_s:

       y: vector of responses.

       q: vector of quantiles.

       p: vector of probabilities

       n: number of values to generate

       m: vector of location parameters.

       s: vector of dispersion parameters.

       f: vector of family parameters.

     log: if TRUE, log probabilities are supplied.

_A_u_t_h_o_r(_s):

     J.K. Lindsey

_E_x_a_m_p_l_e_s:

     dhjorth(5, 5, 5, 2)
     phjorth(5, 5, 5, 2)
     qhjorth(0.8, 5, 5, 2)
     rhjorth(10, 5, 5, 2)

