copper                package:SemiPar                R Documentation

_C_o_p_p_e_r _d_a_t_a

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

     The 'copper' data frame has 442 sets of observations from a
     simulation based on a stockpile of mined material in the former
     Soviet Union. Boreholes have been drilled into the dump. The drill
     core is cut every 5 metres and assayed for copper and cobalt
     content in percentage by weight.

_U_s_a_g_e:

     data(copper)

_F_o_r_m_a_t:

     This data frame contains the following columns:

     _s_a_m_p_l_e._n_u_m sample number.

     _i_d sample identification number.

     _z_o_n_e zone code.

     _x_c_o_o_r_d x co-ordinate.

     _y_c_o_o_r_d y co-ordinate.    

     _z_c_o_o_r_d z co-ordinate.    

     _g_r_a_d_e grade measurement.    

     _c_o_r_e._l_e_n_g_t_h percentage of copper.

_S_o_u_r_c_e:

     Clark, I. and Harper, W.V. (2000).  _Practical Geostatistics
     2000_. Columbus, Ohio: Ecosse North America Llc.

_E_x_a_m_p_l_e_s:

     library(SemiPar)
     data(copper)
     pairs(copper[,4:7])

