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<div class="subTitle">org.apache.commons.math3.stat.ranking</div>
<h2 title="Class NaturalRanking" class="title">Class NaturalRanking</h2>
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<ul class="inheritance">
<li>org.apache.commons.math3.stat.ranking.NaturalRanking</li>
</ul>
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<div class="description">
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/stat/ranking/RankingAlgorithm.html" title="interface in org.apache.commons.math3.stat.ranking">RankingAlgorithm</a></dd>
</dl>
<hr>
<br>
<pre>public class <span class="strong">NaturalRanking</span>
extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../../../org/apache/commons/math3/stat/ranking/RankingAlgorithm.html" title="interface in org.apache.commons.math3.stat.ranking">RankingAlgorithm</a></pre>
<div class="block"><p> Ranking based on the natural ordering on doubles.</p>
<p>NaNs are treated according to the configured <a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking"><code>NaNStrategy</code></a> and ties
are handled using the selected <a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking"><code>TiesStrategy</code></a>.
Configuration settings are supplied in optional constructor arguments.
Defaults are <a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html#FAILED"><code>NaNStrategy.FAILED</code></a> and <a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html#AVERAGE"><code>TiesStrategy.AVERAGE</code></a>,
respectively. When using <a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html#RANDOM"><code>TiesStrategy.RANDOM</code></a>, a
<a href="../../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random"><code>RandomGenerator</code></a> may be supplied as a constructor argument.</p>
<p>Examples:
<table border="1" cellpadding="3">
<tr><th colspan="3">
Input data: (20, 17, 30, 42.3, 17, 50, Double.NaN, Double.NEGATIVE_INFINITY, 17)
</th></tr>
<tr><th>NaNStrategy</th><th>TiesStrategy</th>
<th><code>rank(data)</code></th>
<tr>
<td>default (NaNs maximal)</td>
<td>default (ties averaged)</td>
<td>(5, 3, 6, 7, 3, 8, 9, 1, 3)</td></tr>
<tr>
<td>default (NaNs maximal)</td>
<td>MINIMUM</td>
<td>(5, 2, 6, 7, 2, 8, 9, 1, 2)</td></tr>
<tr>
<td>MINIMAL</td>
<td>default (ties averaged)</td>
<td>(6, 4, 7, 8, 4, 9, 1.5, 1.5, 4)</td></tr>
<tr>
<td>REMOVED</td>
<td>SEQUENTIAL</td>
<td>(5, 2, 6, 7, 3, 8, 1, 4)</td></tr>
<tr>
<td>MINIMAL</td>
<td>MAXIMUM</td>
<td>(6, 5, 7, 8, 5, 9, 2, 2, 5)</td></tr></table></p></div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd>
<dt><span class="strong">Version:</span></dt>
<dd>$Id: NaturalRanking.java 1454897 2013-03-10 19:02:54Z luc $</dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#DEFAULT_NAN_STRATEGY">DEFAULT_NAN_STRATEGY</a></strong></code>
<div class="block">default NaN strategy</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#DEFAULT_TIES_STRATEGY">DEFAULT_TIES_STRATEGY</a></strong></code>
<div class="block">default ties strategy</div>
</td>
</tr>
</table>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking()">NaturalRanking</a></strong>()</code>
<div class="block">Create a NaturalRanking with default strategies for handling ties and NaNs.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking(org.apache.commons.math3.stat.ranking.NaNStrategy)">NaturalRanking</a></strong>(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy)</code>
<div class="block">Create a NaturalRanking with the given NaNStrategy.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking(org.apache.commons.math3.stat.ranking.NaNStrategy, org.apache.commons.math3.random.RandomGenerator)">NaturalRanking</a></strong>(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy,
<a href="../../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;randomGenerator)</code>
<div class="block">Create a NaturalRanking with the given NaNStrategy, TiesStrategy.RANDOM
and the given source of random data.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking(org.apache.commons.math3.stat.ranking.NaNStrategy, org.apache.commons.math3.stat.ranking.TiesStrategy)">NaturalRanking</a></strong>(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy,
<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a>&nbsp;tiesStrategy)</code>
<div class="block">Create a NaturalRanking with the given NaNStrategy and TiesStrategy.</div>
</td>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking(org.apache.commons.math3.random.RandomGenerator)">NaturalRanking</a></strong>(<a href="../../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;randomGenerator)</code>
<div class="block">Create a NaturalRanking with TiesStrategy.RANDOM and the given
RandomGenerator as the source of random data.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#NaturalRanking(org.apache.commons.math3.stat.ranking.TiesStrategy)">NaturalRanking</a></strong>(<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a>&nbsp;tiesStrategy)</code>
<div class="block">Create a NaturalRanking with the given TiesStrategy.</div>
</td>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#getNanStrategy()">getNanStrategy</a></strong>()</code>
<div class="block">Return the NaNStrategy</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#getTiesStrategy()">getTiesStrategy</a></strong>()</code>
<div class="block">Return the TiesStrategy</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>double[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/ranking/NaturalRanking.html#rank(double[])">rank</a></strong>(double[]&nbsp;data)</code>
<div class="block">Rank <code>data</code> using the natural ordering on Doubles, with
NaN values handled according to <code>nanStrategy</code> and ties
resolved using <code>tiesStrategy.</code></div>
</td>
</tr>
</table>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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<a name="DEFAULT_NAN_STRATEGY">
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<h4>DEFAULT_NAN_STRATEGY</h4>
<pre>public static final&nbsp;<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a> DEFAULT_NAN_STRATEGY</pre>
<div class="block">default NaN strategy</div>
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<a name="DEFAULT_TIES_STRATEGY">
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<h4>DEFAULT_TIES_STRATEGY</h4>
<pre>public static final&nbsp;<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a> DEFAULT_TIES_STRATEGY</pre>
<div class="block">default ties strategy</div>
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<h3>Constructor Detail</h3>
<a name="NaturalRanking()">
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<h4>NaturalRanking</h4>
<pre>public&nbsp;NaturalRanking()</pre>
<div class="block">Create a NaturalRanking with default strategies for handling ties and NaNs.</div>
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<pre>public&nbsp;NaturalRanking(<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a>&nbsp;tiesStrategy)</pre>
<div class="block">Create a NaturalRanking with the given TiesStrategy.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>tiesStrategy</code> - the TiesStrategy to use</dd></dl>
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<pre>public&nbsp;NaturalRanking(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy)</pre>
<div class="block">Create a NaturalRanking with the given NaNStrategy.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>nanStrategy</code> - the NaNStrategy to use</dd></dl>
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<h4>NaturalRanking</h4>
<pre>public&nbsp;NaturalRanking(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy,
<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a>&nbsp;tiesStrategy)</pre>
<div class="block">Create a NaturalRanking with the given NaNStrategy and TiesStrategy.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>nanStrategy</code> - NaNStrategy to use</dd><dd><code>tiesStrategy</code> - TiesStrategy to use</dd></dl>
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<h4>NaturalRanking</h4>
<pre>public&nbsp;NaturalRanking(<a href="../../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;randomGenerator)</pre>
<div class="block">Create a NaturalRanking with TiesStrategy.RANDOM and the given
RandomGenerator as the source of random data.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>randomGenerator</code> - source of random data</dd></dl>
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<h4>NaturalRanking</h4>
<pre>public&nbsp;NaturalRanking(<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;nanStrategy,
<a href="../../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a>&nbsp;randomGenerator)</pre>
<div class="block">Create a NaturalRanking with the given NaNStrategy, TiesStrategy.RANDOM
and the given source of random data.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>nanStrategy</code> - NaNStrategy to use</dd><dd><code>randomGenerator</code> - source of random data</dd></dl>
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<a name="getNanStrategy()">
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<h4>getNanStrategy</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">NaNStrategy</a>&nbsp;getNanStrategy()</pre>
<div class="block">Return the NaNStrategy</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>returns the NaNStrategy</dd></dl>
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<h4>getTiesStrategy</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/commons/math3/stat/ranking/TiesStrategy.html" title="enum in org.apache.commons.math3.stat.ranking">TiesStrategy</a>&nbsp;getTiesStrategy()</pre>
<div class="block">Return the TiesStrategy</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the TiesStrategy</dd></dl>
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<h4>rank</h4>
<pre>public&nbsp;double[]&nbsp;rank(double[]&nbsp;data)</pre>
<div class="block">Rank <code>data</code> using the natural ordering on Doubles, with
NaN values handled according to <code>nanStrategy</code> and ties
resolved using <code>tiesStrategy.</code></div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/ranking/RankingAlgorithm.html#rank(double[])">rank</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/commons/math3/stat/ranking/RankingAlgorithm.html" title="interface in org.apache.commons.math3.stat.ranking">RankingAlgorithm</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - array to be ranked</dd>
<dt><span class="strong">Returns:</span></dt><dd>array of ranks</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/NotANumberException.html" title="class in org.apache.commons.math3.exception">NotANumberException</a></code> - if the selected <a href="../../../../../../org/apache/commons/math3/stat/ranking/NaNStrategy.html" title="enum in org.apache.commons.math3.stat.ranking"><code>NaNStrategy</code></a> is <code>FAILED</code>
and a <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Double.html?is-external=true#NaN" title="class or interface in java.lang"><code>Double.NaN</code></a> is encountered in the input data</dd></dl>
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