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<table width="100%" summary="page for crabs"><tr><td>crabs</td><td align="right">R Documentation</td></tr></table>

<h2>
Morphological Measurements on Leptograpsus Crabs
</h2>

<h3>Description</h3>


<p>The <code>crabs</code> 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 <EM>Leptograpsus variegatus</EM> collected at
Fremantle, W. Australia.
</p>


<h3>Usage</h3>

<pre>
crabs
</pre>


<h3>Format</h3>


<p>This data frame contains the following columns:
</p>

<dl>
<dt><code>sp</code></dt><dd>
<p><code>species</code> - <code>"B"</code> or <code>"O"</code> for blue or orange.
</p>
</dd>
<dt><code>sex</code></dt><dd>
<p>as it says.
</p>
</dd>
<dt><code>index</code></dt><dd>
<p>index <code>1:50</code> within each of the four groups.
</p>
</dd>
<dt><code>FL</code></dt><dd>
<p>frontal lobe size (mm).
</p>
</dd>
<dt><code>RW</code></dt><dd>
<p>rear width (mm).
</p>
</dd>
<dt><code>CL</code></dt><dd>
<p>carapace length (mm).
</p>
</dd>
<dt><code>CW</code></dt><dd>
<p>carapace width (mm).
</p>
</dd>
<dt><code>BD</code></dt><dd>
<p>body depth (mm).
</p>
</dd>
</dl>



<h3>Source</h3>


<p>Campbell, N.A. and Mahon, R.J. (1974) A multivariate
study of variation in two species of rock crab of genus
<EM>Leptograpsus.</EM>
<EM>Australian Journal of  Zoology</EM> <B>22</B>, 417&ndash;425.
</p>


<h3>References</h3>


<p>Venables, W. N. and Ripley, B. D. (2002)
<EM>Modern Applied Statistics with S.</EM> Fourth edition.  Springer.
</p>


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