is.projected               package:sp               R Documentation

_S_e_t_s _o_r _r_e_t_r_i_e_v_e_s _p_r_o_j_e_c_t_i_o_n _a_t_t_r_i_b_u_t_e_s _o_n _c_l_a_s_s_e_s _e_x_t_e_n_d_i_n_g
_S_p_a_t_i_a_l_D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     Sets or retrieves projection attributes on classes extending
     SpatialData

_U_s_a_g_e:

     is.projected(sd)
     proj4string(sd)
     proj4string(sd) <- value

_A_r_g_u_m_e_n_t_s:

      sd: An object of class or extending Spatial-class

   value: character string, indicating a valid proj4 string 

_D_e_t_a_i_l_s:

     proj4 strings are not operative yet

_V_a_l_u_e:

     'is.projected' returns a logical; 'proj4string' returns a
     character vector of length 1; 'spatial.dimension' returns the
     number of spatial dimensions (2 or 3).

_A_u_t_h_o_r(_s):

     Edzer J. Pebesma, e.pebesma@geo.uu.nl

_S_e_e _A_l_s_o:

     CRS

_E_x_a_m_p_l_e_s:

