spsample-methods             package:sp             R Documentation

_s_a_m_p_l_i_n_g _p_o_i_n_t _l_o_c_a_t_i_o_n_s _i_n (_o_r _o_n) _a _s_p_a_t_i_a_l _o_b_j_e_c_t

_D_e_s_c_r_i_p_t_i_o_n:

     sampling point locations in (or on) a spatial object

_M_e_t_h_o_d_s:


     _x = "_S_p_a_t_i_a_l" sample in the bbox of 'x' 

     _x = "_L_i_n_e" sample on a line 

     _x = "_P_o_l_y_g_o_n" sample in an Polygon 

     _x = "_P_o_l_y_g_o_n_s" sample in an Polygons object, consisting of
          possibly multiple Polygon objects (and holes!) 

     _x = "_S_p_a_t_i_a_l_P_o_l_y_g_o_n_s" sample in an SpatialPolygons object;
          sampling takes place over all Polygons objects present, use
          subsetting to vary sampling intensity (density) 

     _x = "_S_p_a_t_i_a_l_G_r_i_d" sample in an SpatialGrid object 

     _x = "_S_p_a_t_i_a_l_P_i_x_e_l_s" sample in an SpatialPixels object 

_S_e_e _A_l_s_o:

     spsample

