+---------+-------------------+
| crabs   | 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
~~~~~

::

    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**, 417â€“425.

References
~~~~~~~~~~

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