tpast                 package: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

