

fgl(MASS)                                    R Documentation

_M_e_a_s_u_r_e_m_e_n_t_s _o_f _F_o_r_e_n_s_i_c _G_l_a_s_s _F_r_a_g_m_e_n_t_s

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

     The `fgl' data frame has 214 rows and 10 columns.  It
     was collected by B. German on fragments of glass col-
     lected in forensic work.

_A_r_g_u_m_e_n_t_s_:

      RI: refractive index; more precisely the refractive
          index is 1.518xxxx.

          The remaining 8 measurements are percentages by
          weight of oxides.

      Na: sodium

      Mg: manganese

      Al: aluminium

      Si: silicon

       K: potassium

      Ca: calcium

      Ba: barium

      Fe: iron

    type: The fragments were originally classed into seven
          types, one of which was absent in this dataset.
          The categories which occur are window float glass
          (`WinF': 70), window non-float glass (`WinNF':
          76), vehicle window glass (`Veh': 17), containers
          (`Con': 13), tableware (`Tabl': 9) and vehicle
          headlamps (`Head': 29).

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

     This data frame contains the following columns:

