survprob               package:FLCore               R Documentation

_C_a_l_c_u_l_a_t_i_n_g _s_u_r_v_i_v_a_l _p_r_o_b_a_b_i_l_t_i_e_s _g_i_v_e_n _m_o_r_t_a_l_i_t_y _i_n _t_h_e _F_L_B_i_o_l _o_b_j_e_c_t

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

     For an 'FLBiol' object with the mortality-at-quant this method
     calculates the  associated survival probability-at-quant. This can
     be later used by the 'r()'  method. The calculation can be carried
     out either by year or by cohort.

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

     survprob(object, ...)

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

  object: An object of type 'FLBiol-class'.

     ...: Extra arguments accepted by each implementation.

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

     Calculates the survival probability-at-quant given the mortality
     information in an  'FLBiol-class'  object - survival probability
     from one year to the next is  simply exp(-M) and the survival
     probaiblity to a given quant is merely the product along the quant
     dimension of the individual survival probabilities.

_V_a_l_u_e:

     An object of class 'FLQuant-class'.

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

     FLR Team

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

     'FLBiol-class'

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

     ## Not run: 
     data(nsher.biol)
     nsh.ps <- survprob(nsh.biol,by='year')
     ## End(Not run)

