meplot                 package:evir                 R Documentation

_S_a_m_p_l_e _M_e_a_n _E_x_c_e_s_s _P_l_o_t

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

     Plots sample mean excesses over increasing thresholds.

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

     meplot(data, omit = 3, labels = TRUE, ...)

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

    data: data vector

    omit: number of upper plotting points to be omitted

  labels: whether or not axes are to be labelled

     ...: other graphics parameters

_D_e_t_a_i_l_s:

     An upward trend in plot shows heavy-tailed behaviour. In
     particular, a straight line with positive gradient above some
     threshold is a sign  of Pareto behaviour in tail. A downward trend
     shows thin-tailed  behaviour whereas a line with zero gradient
     shows an exponential  tail. Because upper plotting points are the
     average of a handful of extreme excesses, these may be omitted for
     a prettier plot.

_S_e_e _A_l_s_o:

     'gpd', 'qplot'

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

     ## Not run: data(danish)
     ## Not run: meplot(danish) 
     # Sample mean excess plot of heavy-tailed Danish fire insurance data 

