atya                  package:ade4                  R Documentation

_G_e_n_e_t_i_c _v_a_r_i_a_b_i_l_i_t_y _o_f _C_a_c_a_d_o_r_s

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

     This data set contains informations about genetic variability of
     _Atya innocous_ and _Atya scabra_ in Guadeloupe (France).

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

     data(atya)

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

     'atya' is a list with the following objects : 

     _x_y : a data frame with the coordinates of the 31 sites

     _g_e_n : a data frame with 22 variables collected on 31 sites

     _n_e_i_g : an object of class 'neig'   

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

     Fievet, E., Eppe, F. and Doldec, S. (2001) Etude de la
     variabilit morphomtrique et gntique des populations de
     Cacadors (_Atya innocous_ et _Atya scabra_) de l'le de
     Basse-Terre. Direction Rgionale de L'Environnement Guadeloupe,
     Laboratoire des hydrosystmes fluviaux, Universit Lyon 1.

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

     ## Not run: 
     data(atya)
     if (require(pixmap, quiet = TRUE)) {
         atya.digi <- read.pnm(system.file("pictures/atyadigi.pnm",
             package = "ade4"))
         atya.carto <- read.pnm(system.file("pictures/atyacarto.pnm",
             package = "ade4"))
         par(mfrow = c(1,2))
         plot(atya.digi)
         plot(atya.carto)
         points(atya$xy, pch = 20, cex = 2)
     }
     if (require(maptools, quiet = TRUE) & require(spdep, quiet = TRUE)) {
         plot(neig2nb(atya$neig), atya$xy, col = "red", add = TRUE, lwd = 2)
         par(mfrow = c(1,1))
     }
     ## End(Not run)

