waders package:MASS R Documentation _C_o_u_n_t_s _o_f _W_a_d_e_r_s _a_t _1_5 _S_i_t_e_s _i_n _S_o_u_t_h _A_f_r_i_c_a _D_e_s_c_r_i_p_t_i_o_n: The 'waders' data frame has 15 rows and 19 columns. The entries are counts of waders in summer. _U_s_a_g_e: waders _F_o_r_m_a_t: This data frame contains the following columns (species) '_S_1' Oystercatcher '_S_2' White-fronted Plover '_S_3' Kitt Lutz's Plover '_S_4' Three-banded Plover '_S_5' Grey Plover '_S_6' Ringed Plover '_S_7' Bar-tailed Godwit '_S_8' Whimbrel '_S_9' Marsh Sandpiper '_S_1_0' Greenshank '_S_1_1' Common Sandpiper '_S_1_2' Turnstone '_S_1_3' Knot '_S_1_4' Sanderling '_S_1_5' Little Stint '_S_1_6' Curlew Sandpiper '_S_1_7' Ruff '_S_1_8' Avocet '_S_1_9' Black-winged Stilt The rows are the sites: A = Namibia North coast B = Namibia North wetland C = Namibia South coast D = Namibia South wetland E = Cape North coast F = Cape North wetland G = Cape West coast H = Cape West wetland I = Cape South coast J= Cape South wetland K = Cape East coast L = Cape East wetland M = Transkei coast N = Natal coast O = Natal wetland _S_o_u_r_c_e: J.C. Gower and D.J. Hand (1996) _Biplots_ Chapman & Hall Table 9.1. Quoted as from: R.W. Summers, L.G. Underhill, D.J. Pearson and D.A. Scott (1987) Wader migration systems in south and eastern Africa and western Asia. _Wader Study Group Bulletin_ *49* Supplement, 15-34. _E_x_a_m_p_l_e_s: plot(corresp(waders, nf=2))