Spatial-class               package:sp               R Documentation

_C_l_a_s_s "_S_p_a_t_i_a_l" ~~~

_D_e_s_c_r_i_p_t_i_o_n:

     An abstract class from which useful spatial classes are derived

_O_b_j_e_c_t_s _f_r_o_m _t_h_e _C_l_a_s_s:

     are never to be generated; only derived classes can be meaningful

_S_l_o_t_s:

     '_b_b_o_x': Object of class '"matrix"'; 2-column matrix holding the
          minimum in first and maximum in second column for the
          x-coordinate (first row), y-coordinate (second row) and
          optionally, for points and grids only, further coordinates. 

     '_p_r_o_j_4_s_t_r_i_n_g': Object of class '"CRS"'; holding a valid proj4
          string, which can be used for unprojecting or reprojecting
          coordinates; it is initialised to NA. Other strings are
          checked for validity in the spproj package.

_M_e_t_h_o_d_s:

     _b_b_o_x 'signature(obj = "Spatial")': retrieves the bbox element 

     _d_i_m_e_n_s_i_o_n_s 'signature(obj = "Spatial")': retrieves the number of
          spatial dimensions spanned 

     _g_r_i_d_d_e_d 'signature(obj = "Spatial")': logical, tells whether the
          data is on a regular spatial grid 

_W_a_r_n_i_n_g:

     this class is not useful in itself, but all spatial classes in
     this package derive from it

_N_o_t_e:

_A_u_t_h_o_r(_s):

     r-spatial team; Edzer J. Pebesma, e.pebesma@geo.uu.nl Roger
     Bivand, Barry Rowlinson, Virgilio G\'{o}mez-Rubio

_R_e_f_e_r_e_n_c_e_s:

_S_e_e _A_l_s_o:

     'SpatialPoints-class', 'SpatialGrid-class',
     'SpatialPointsDataFrame-class', 'SpatialGridDataFrame-class',

_E_x_a_m_p_l_e_s:

