crabs                  package:MASS                  R Documentation

_M_o_r_p_h_o_l_o_g_i_c_a_l _M_e_a_s_u_r_e_m_e_n_t_s _o_n _L_e_p_t_o_g_r_a_p_s_u_s _C_r_a_b_s

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

     The `crabs' data frame has 200 rows and 8 columns, describing 5
     morphological measurements on 50 crabs each of two colour forms
     and both sexes, of the species Leptograpsus variegatus collected
     at Fremantle, W. Australia.

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

     data(crabs)

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

     This data frame contains the following columns:

     `_s_p' `species' - `"B"' or `"O"' for blue or orange

     `_s_e_x' as it says

     `_i_n_d_e_x' index 1:50 within each of the four groups

     `_F_L' frontal lobe size (mm)

     `_R_W' rear width (mm)

     `_C_L' carapace length (mm)

     `_C_W' carapace width (mm)

     `_B_D' body depth (mm)

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

     Campbell, N.A. and Mahon, R.J. (1974) A multivariate study of
     variation in two species of rock crab of genus Leptograpsus.
     Australian Journal of  Zoology 22, 417-425.

