size.html

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<html><head><title>R: Getting the Size of Each Element</title>
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<table width="100%" summary="page for size {arules}"><tr><td>size {arules}</td><td align="right">R Documentation</td></tr></table>
<h2>Getting the Size of Each Element</h2>


<h3>Description</h3>

<p>
Provides the generic function <code>size</code> and S4 methods to get the size of
each element from objects based on <code><a href="itemMatrix-class.html">itemMatrix</a></code>.  For
example, it is used to get a vector of transaction sizes (i.e., the number of
present items (ones) per element (row) of the binary incidence matrix) from
an object of class <code><a href="transactions-class.html">transactions</a></code>).
</p>


<h3>Usage</h3>

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


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>x</code></td>
<td>
an object.</td></tr>
<tr valign="top"><td><code>...</code></td>
<td>
further (unused) arguments.</td></tr>
</table>

<h3>Value</h3>

<p>
<code>size</code> returns a numeric vector of length <code>length(x)</code>.  Each
element is the size of the corresponding element (row in the matrix) in
object <code>x</code>. For rules, <code>size</code> returns the sum of the number of
elements in the LHS and the RHS.</p>

<h3>See Also</h3>

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


<h3>Examples</h3>

<pre>
data("Adult")
summary(size(Adult))
</pre>



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

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