published thesis. Institute of Archaeology, University of Copenhagen.
</p>


<h3>References</h3>

<p>Baxter, M. J. 1994. <em>Exploratory Multivariate Analysis in Archaeology</em>. Edinburgh University Press, pp 128-132.
</p>


<h3>Examples</h3>

<pre><code class='language-R'>data(TRBPottery)
TRBPottery.frm &lt;- aggregate(TRBPottery[, -1], list(Form=TRBPottery$Form), mean)
Xvals &lt;- TRBPottery.frm[, seq(2, 16, by=2)]
Yvals &lt;- TRBPottery.frm[, seq(3, 17, by=2)]
matplot(t(Xvals), t(Yvals), xlab="X", ylab