ardeche                 package:ade4                 R Documentation

_F_a_u_n_a _T_a_b_l_e _w_i_t_h _d_o_u_b_l_e (_r_o_w _a_n_d _c_o_l_u_m_n) _p_a_r_t_i_t_i_o_n_i_n_g

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

     This data set gives informations about species in different sites
     and dates.

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

     data(ardeche)

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

     'ardeche' is a list with 6 components.

     _t_a_b is a data frame containing fauna table with 43 species (rows)
          and 35 sites (columns).

     _c_o_l._b_l_o_c_k_s is a vector containing the number of columns in the 6
          groups.

     _r_o_w._b_l_o_c_k_s is a vector containing the number of rows in the 4
          groups.

     _d_a_t._f_a_c is a dates factor for samples (6 dates).

     _s_t_a._f_a_c is a sites factor for samples (6 sites).

     _e_s_p._f_a_c is a species order factor (Ephemeroptera, Plecoptera,
          Coleoptera, Trichoptera).

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

     Cazes, P., Chessel, D., and Doldec, S. (1988) L'analyse des
     correspondances internes d'un tableau partitionn : son usage en
     hydrobiologie. _Revue de Statistique Applique_, *36*, 39-54.

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

     data(ardeche)
     dudi1 <- dudi.coa(ardeche$tab, scan = FALSE)
     s.class(dudi1$co, ardeche$dat.fac)
     s.label(dudi1$co, clab = 0.5, add.p = TRUE)

