unique.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>R: Remove Duplicated Elements from a Collection</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link rel="stylesheet" type="text/css" href="../../R.css">
</head><body>

<table width="100%" summary="page for unique {arules}"><tr><td>unique {arules}</td><td align="right">R Documentation</td></tr></table>
<h2>Remove Duplicated Elements from a Collection</h2>


<h3>Description</h3>

<p>
Provides the generic function <code>unique</code>   and the S4 methods for
<code>itemMatrix</code>.  <code>unique</code> uses <code><a href="duplicated.html">duplicated</a></code> to return an
<code>itemMatrix</code> with the duplicate elements removed.
</p>
<p>
Note that <code>unique</code> can also be used on collections of 
<code>associations</code>.
</p>


<h3>Usage</h3>

<pre>
unique(x, incomparables = FALSE, ...)
</pre>


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>x</code></td>
<td>
an object of class <code>itemMatrix</code> or associations. </td></tr>
<tr valign="top"><td><code>...</code></td>
<td>
further arguments (currently unused). </td></tr>
<tr valign="top"><td><code>incomparables</code></td>
<td>
currently unused.</td></tr>
</table>

<h3>Value</h3>

<p>
An object of the same class as <code>x</code> with duplicated elements removed.</p>

<h3>See Also</h3>

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


<h3>Examples</h3>

<pre>
data("Adult")

r1 &lt;- apriori(Adult[1:1000], parameter = list(support = 0.5))
r2 &lt;- apriori(Adult[1001:2000], parameter = list(support = 0.5))

## Note that this produces a collection of rules from two sets
r_comb &lt;- c(r1, r2)
r_comb &lt;- unique(r_comb)
r_comb

</pre>



<hr><div align="center">[Package <em>arules</em> version 0.6-6 <a href="00Index.html">Index]</a></div>

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