is.na-methods            package:timeDate            R Documentation

_i_s._n_a _M_e_t_h_o_d_s

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

     is.na methods for 'timeDate' objects.

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

     # Create a timeCalendar sequence
     (td <- timeCalendar())
     is.na(td)

     # insert NA's
     is.na(td) <- 2:3
     td

     # test of NA's
     is.na(td)

