doubs                  package:ade4                  R Documentation

_P_a_i_r _o_f _E_c_o_l_o_g_i_c_a_l _T_a_b_l_e_s

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

     This data set gives environmental variables, fish species and
     spatial coordinates for 30 sites.

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

     data(doubs)

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

     'doubs' is a list with 3 components.

     _m_i_l is a data frame with 30 rows (sites) and 11 environmental
          variables.

     _p_o_i is a data frame with 30 rows (sites) and 27 fish species.

     _x_y is a data frame with 30 rows (sites)  and 2 spatial
          coordinates.

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

     Verneaux, J. (1973)  _Cours d'eau de Franche-Comt (Massif du
     Jura).  Recherches cologiques sur le rseau hydrographique du
     Doubs. Essai de biotypologie_.  Thse d'tat, Besanon. 1-257.

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

     data(doubs)
     pca1 <- dudi.pca(doubs$mil, scan = FALSE)
     pca2 <- dudi.pca(doubs$poi, scale = FALSE, scan = FALSE)
     coiner1 <- coinertia(pca1, pca2, scan = FALSE)
     par(mfrow = c(3,3))
     s.corcircle(coiner1$aX)
     s.value(doubs$xy, coiner1$lX[,1])
     s.value(doubs$xy, coiner1$lX[,2])
     s.arrow(coiner1$c1)
     s.match(coiner1$mX, coiner1$mY)
     s.corcircle(coiner1$aY)
     s.arrow(coiner1$l1)
     s.value(doubs$xy, coiner1$lY[,1])
     s.value(doubs$xy, coiner1$lY[,2])
     par(mfrow = c(1,1))

