aRTquerier                package:aRT                R Documentation

_C_l_a_s_s _a_R_T_q_u_e_r_i_e_r

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

     Class that manipulates the result of a database query. It returns
     the objects one by one, and can slide a temporal 'aRTtheme'.

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     Objects can be created by calling 'openQuerier()' from 'aRTlayer'
     or from 'aRTtheme'.

_E_x_t_e_n_d_s:

     Class 'aRTcomponent', directly.

_M_e_t_h_o_d_s:


     _g_e_t_D_a_t_a: Returns the next element of the query result in the
          actual slide.

     _n_e_x_t_F_r_a_m_e: Loads the next frame, if there is a temporal sliding. A
          temporal query needs to load one slide before using 'getData'
          for getting its elements. Non-temporal queries can't use this
          function. Note that you can do a non-temporal query in a
          temporal layer.

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

     Pedro Ribeiro de Andrade

