ClamWest            package:compositions            R Documentation

_C_o_l_o_r-_s_i_z_e _c_o_m_p_o_s_i_t_i_o_n_s _o_f _2_0 _c_l_a_m _c_o_l_o_n_i_e_s _f_r_o_m _W_e_s_t _B_a_y

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

     From West Bay, 20 clam colonies were randomly selected, and from
     each a sample of clams were taken. Each sample was sieved into
     three size ranges, large, medium, and small. Then each size range
     was sorted by the shale colour, dark or light.

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

     data(ClamWest)

_D_e_t_a_i_l_s:

     The data consist of 20 cases and $2\times 3$ variables denoted:

         dl  portion of dark large clams,
         dm  portion of dark medium clams,
         ds  portion of dark small clams,
         ll  portion of light large clams,
         lm  portion of light medium clams,
         ls  portion of light small clams.

     All 6-part compositions sum up to one.

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

     Aitchison: CODA microcomputer statistical package, 1986, the file
     name CLAMWEST.DAT, here included under the GNU Public Library
     Licence Version 2 or newer.

_R_e_f_e_r_e_n_c_e_s:

     Aitchison: The Statistical Analysis of Compositional Data, 1986,
     Data 15, pp17.

