ttime                 package:event                 R Documentation

_C_r_e_a_t_e _a _V_e_c_t_o_r _o_f _T_o_t_a_l _T_i_m_e _E_l_a_p_s_e_d _f_o_r _e_a_c_h _I_n_d_i_v_i_d_u_a_l _f_o_r _a
_P_o_i_n_t _P_r_o_c_e_s_s

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

     ttime(y, id)

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

       y: Vector of times.

      id: Vector of corresponding individual identifiers for who had
          which sequence of times.

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

     'ttime' creates a vector of length 'sum(y)' of times since each
     individual began 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', 'tpast', 'tvcov'.

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

     y <- c(5,3,2,4)
     id <- c(1,1,2,2)
     itime <- ttime(y, id)
     itime

