

tpast(event)                                 R Documentation

_C_r_e_a_t_e _a _V_e_c_t_o_r _o_f _T_i_m_e_s _P_a_s_t _s_i_n_c_e _P_r_e_v_i_o_u_s _E_v_e_n_t_s _f_o_r _a
_P_o_i_n_t _P_r_o_c_e_s_s

_U_s_a_g_e_:

     tpast(y)

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

       y: Vector of times.

_V_a_l_u_e_:

     `tpast' creates a vector of length `sum(y)' of times
     since the immediately preceding event occurred for use
     with `ehr'.

_A_u_t_h_o_r_(_s_)_:

     J.K. Lindsey

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

     `bp', `ehr', `ident', `pp', `tccov', `ttime', `tvcov'.

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

     y <- c(5,3,2,4)
     ptime <- tpast(y)
     ptime

