aRTdb                  package:aRT                  R Documentation

_C_l_a_s_s _a_R_T_d_b

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

     Class that manipulates a database. Data is stored in layers
     (geometries and their attributes) or external tables (attributes
     not directly connected to any geometry). 'aRTdb' objects use more
     memory than any other object of this package because it stores the
     definitions of all themes, layers, and tables. Objects of these
     three classes store only a pointer to its father, the database. 
     We recommend to work with only one object of this class per time.

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

     Objects can be created by using 'createDb' or 'openDb', methods of
     'aRTconn'.

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

     Class 'aRTcomponent', directly.

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


     _c_r_e_a_t_e_L_a_y_e_r: Creates a new layer returns it.

     _c_r_e_a_t_e_T_a_b_l_e: Creates an empty table in the database.

     _c_r_e_a_t_e_V_i_e_w: Creates an empty View in the database.

     _d_e_l_e_t_e_L_a_y_e_r: Deletes a layer of the database.

     _d_e_l_e_t_e_T_a_b_l_e: Deletes a table of the database.

     _d_e_l_e_t_e_T_h_e_m_e: Deletes a theme of the database.

     _d_e_l_e_t_e_V_i_e_w: Deletes a view in the database.

     _i_m_p_o_r_t_M_i_f: Imports a MID/MIF file to the database.

     _i_m_p_o_r_t_S_h_a_p_e: Imports a shapefile to the database.

     _i_m_p_o_r_t_S_p_D_a_t_a: Imports data in the sp format to the database.

     _i_m_p_o_r_t_T_a_b_l_e: Imports a data.frame to a database table.

     _o_p_e_n_L_a_y_e_r: Opens an existent layer.

     _o_p_e_n_T_h_e_m_e: Opens an existent theme. (Themes can be created only
          from layers.)

     _r_e_l_o_a_d: Reloads the data about themes and layers. It is useful
          when something has been changed from outside R.

     _s_h_o_w_L_a_y_e_r_s: Shows all the available layers.

     _s_h_o_w_T_h_e_m_e_s: Shows all the available themes.

     _s_h_o_w_V_i_e_w_s: Show all the available views.

     _s_u_m_m_a_r_y: Returns some information about the database.

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

     Marcos Aurelio Carrero, Pedro Ribeiro de Andrade

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

     See 'aRTdb-METHOD' for a method of this class or 'CLASSNAME-class'
     for links to other classes.

