mollusc                 package:ade4                 R Documentation

_F_a_u_n_i_s_t_i_c _C_o_m_m_u_n_i_t_i_e_s _a_n_d _S_a_m_p_l_i_n_g _E_x_p_e_r_i_m_e_n_t

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

     This data set gives the abundance of 32 mollusk species in 163
     samples.  For each sample, 4 informations are known : the sampling
     sites, the seasons,  the sampler types and the time of exposure.

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

     data(mollusc)

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

     'mollusc' is a list of 2 objects.

     _f_a_u is a data frame with 163 samples and 32 mollusk species
          (abundance).

     _p_l_a_n contains the 163 samples and 4 variables.

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

     Richardot-Coulet, M., Chessel D. and Bournaud M. (1986)
     Typological value of the benthos of old beds of a large river.
     Methodological approach. _Archiv fr Hydrobiologie_, *107*,
     363-383.

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

     data(mollusc)
     coa1 <- dudi.coa(log(mollusc$fau + 1), scannf = FALSE, nf = 3)
     par(mfrow = c(2,2))
     s.chull(coa1$li, mollusc$plan$site, 2, 3, opt = 1, cpoi = 1)
     s.chull(coa1$li, mollusc$plan$season, 2, 3, opt = 1, cpoi = 1)
     s.chull(coa1$li, mollusc$plan$method, 2, 3, opt = 1, cpoi = 1)
     s.chull(coa1$li, mollusc$plan$duration, 2, 3, opt = 1, cpoi = 1)
     par(mfrow=c(1,1))

