rhone                  package:ade4                  R Documentation

_P_h_y_s_i_c_o-_C_h_e_m_i_s_t_r_y _D_a_t_a

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

     This data set gives for 39 water samples a physico-chemical
     description  with the number of sample date and the flows of three
     tributaries.

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

     data(rhone)

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

     'rhone' is a list of 3 components.

     _t_a_b is a data frame with 39 water samples and 15 physico-chemical
          variables.

     _d_a_t_e is a vector of the sample date (in days).

     _d_i_s_c_h is a data frame with 39 water samples and the flows of the
          three tributaries.

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

     Carrel, G., Barthelemy, D., Auda, Y. and Chessel, D. (1986)
     Approche graphique de l'analyse en composantes principales norme
     : utilisation en hydrobiologie. _Acta Oecologica, Oecologia
     Generalis_, *7*, 189-203.

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

     data(rhone)
     pca1 <- dudi.pca(rhone$tab, nf = 2, scann = FALSE)
     rh1 <- reconst(pca1, 1)
     rh2 <- reconst(pca1, 2)
     par(mfrow = c(4,4))
     par(mar = c(2.6,2.6,1.1,1.1))
     for (i in 1:15) {
         plot(rhone$date, rhone$tab[,i])
         lines(rhone$date, rh1[,i], lwd = 2)
         lines(rhone$date, rh2[,i])
         scatterutil.sub(names(rhone$tab)[i], 2, "topright")
     }
     par(mfrow = c(1,1))

