crabs                  package:MASS                  R Documentation

Morphological Measurements on Leptograpsus Crabs

Description:

     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.

Usage:

     data(crabs)

Format:

     This data frame contains the following columns:

     'sp' 'species' - '"B"' or '"O"' for blue or orange

     'sex' as it says

     'index' index 1:50 within each of the four groups

     'FL' frontal lobe size (mm)

     'RW' rear width (mm)

     'CL' carapace length (mm)

     'CW' carapace width (mm)

     'BD' body depth (mm)

Source:

     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.

References:

     Venables, W. N. and Ripley, B. D. (2002) _Modern Applied
     Statistics with S._ Fourth edition.  Springer.

