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<html><head><title>R: Cross-tabulate jount occurences across pairs of items</title>
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<table width="100%" summary="page for crossTable {arules}"><tr><td>crossTable {arules}</td><td align="right">R Documentation</td></tr></table>
<h2>Cross-tabulate jount occurences across pairs of items</h2>


<h3>Description</h3>

<p>
Provides the generic function <code>crossTable</code> and the S4 method to 
cross-tabulate jount occurences across pairs of items.
</p>


<h3>Usage</h3>

<pre>
crossTable(x, ...)
</pre>


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>x</code></td>
<td>
object to be cross-tabulated 
(<code>transactions</code> or <code>itemMatrix</code>).</td></tr>
<tr valign="top"><td><code>...</code></td>
<td>
further arguments (currently unused). </td></tr>
</table>

<h3>Value</h3>

<p>
A symmetric matrix of n time n, where n is the number of items times 
in <code>x</code>. The matrix contains the co-occurrence counts between pairs of
items.</p>

<h3>See Also</h3>

<p>
<code><a href="transactions-class.html">transactions-class</a></code>,
<code><a href="itemMatrix-class.html">itemMatrix-class</a></code>.
</p>


<h3>Examples</h3>

<pre>
data("Groceries")

ct &lt;- crossTable(Groceries)
ct[1:5, 1:5]

</pre>



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