api/java/snapshot/apidocs/org/apache/datasketches/quantiles/DoublesSketchBuilder.html - datasketches-website - Git at Google

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 <h2 title="Class DoublesSketchBuilder" class="title">Class DoublesSketchBuilder</h2>
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 <pre>public class <span class="typeNameLabel">DoublesSketchBuilder</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
 <div class="block">For building a new quantiles DoublesSketch.</div>
 <dl>
 <dt><span class="simpleTagLabel">Author:</span></dt>
 <dd>Lee Rhodes</dd>
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 <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DoublesSketchBuilder</a></span>()</code></th>
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 <div class="block">Constructor for a new DoublesSketchBuilder.</div>
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 <td class="colFirst"><code><a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#build()">build</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns an UpdateDoublesSketch with the current configuration of this Builder.</div>
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 <td class="colFirst"><code><a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#build(org.apache.datasketches.memory.WritableMemory)">build</a></span>&#8203;(org.apache.datasketches.memory.WritableMemory&nbsp;dstMem)</code></th>
 <td class="colLast">
 <div class="block">Returns a quantiles UpdateDoublesSketch with the current configuration of this builder
  and the specified backing destination Memory store.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getK()">getK</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Gets the current configured <i>k</i></div>
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 <td class="colFirst"><code><a href="DoublesSketchBuilder.html" title="class in org.apache.datasketches.quantiles">DoublesSketchBuilder</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setK(int)">setK</a></span>&#8203;(int&nbsp;k)</code></th>
 <td class="colLast">
 <div class="block">Sets the parameter <i>k</i> that determines the accuracy and size of the sketch.</div>
 </td>
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 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
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 <div class="block">Creates a human readable string that describes the current configuration of this builder.</div>
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 <h4>DoublesSketchBuilder</h4>
 <pre>public&nbsp;DoublesSketchBuilder()</pre>
 <div class="block">Constructor for a new DoublesSketchBuilder. The default configuration is
  <ul>
  <li>k: 128. This produces a normalized rank error of about 1.7%</li>
  <li>Memory: null</li>
  </ul></div>
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 <pre class="methodSignature">public&nbsp;<a href="DoublesSketchBuilder.html" title="class in org.apache.datasketches.quantiles">DoublesSketchBuilder</a>&nbsp;setK&#8203;(int&nbsp;k)</pre>
 <div class="block">Sets the parameter <i>k</i> that determines the accuracy and size of the sketch.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>k</code> - determines the accuracy and size of the sketch.
  It is recommended that <i>k</i> be a power of 2 to enable unioning of sketches with
  different <i>k</i>. It is only possible to union from
  larger <i>k</i> to smaller <i>k</i>.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>this builder</dd>
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 <pre class="methodSignature">public&nbsp;int&nbsp;getK()</pre>
 <div class="block">Gets the current configured <i>k</i></div>
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 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the current configured <i>k</i></dd>
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 <h4>build</h4>
 <pre class="methodSignature">public&nbsp;<a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a>&nbsp;build()</pre>
 <div class="block">Returns an UpdateDoublesSketch with the current configuration of this Builder.</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a UpdateDoublesSketch</dd>
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 <pre class="methodSignature">public&nbsp;<a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a>&nbsp;build&#8203;(org.apache.datasketches.memory.WritableMemory&nbsp;dstMem)</pre>
 <div class="block">Returns a quantiles UpdateDoublesSketch with the current configuration of this builder
  and the specified backing destination Memory store.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>dstMem</code> - destination memory for use by the sketch</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an UpdateDoublesSketch</dd>
 </dl>
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	<pre>public class <span class="typeNameLabel">DoublesSketchBuilder</span>
	extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></pre>
	<div class="block">For building a new quantiles DoublesSketch.</div>
	<dl>
	<dt><span class="simpleTagLabel">Author:</span></dt>
	<dd>Lee Rhodes</dd>
	</dl>
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	<caption><span>Constructors</span><span class="tabEnd"> </span></caption>
	<tr>
	<th class="colFirst" scope="col">Constructor</th>
	<th class="colLast" scope="col">Description</th>
	</tr>
	<tr class="altColor">
	<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">DoublesSketchBuilder</a></span>()</code></th>
	<td class="colLast">
	<div class="block">Constructor for a new DoublesSketchBuilder.</div>
	</td>
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	<h3>Method Summary</h3>
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	<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
	<tr>
	<th class="colFirst" scope="col">Modifier and Type</th>
	<th class="colSecond" scope="col">Method</th>
	<th class="colLast" scope="col">Description</th>
	</tr>
	<tr id="i0" class="altColor">
	<td class="colFirst"><code><a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#build()">build</a></span>()</code></th>
	<td class="colLast">
	<div class="block">Returns an UpdateDoublesSketch with the current configuration of this Builder.</div>
	</td>
	</tr>
	<tr id="i1" class="rowColor">
	<td class="colFirst"><code><a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#build(org.apache.datasketches.memory.WritableMemory)">build</a></span>(org.apache.datasketches.memory.WritableMemory dstMem)</code></th>
	<td class="colLast">
	<div class="block">Returns a quantiles UpdateDoublesSketch with the current configuration of this builder
	and the specified backing destination Memory store.</div>
	</td>
	</tr>
	<tr id="i2" class="altColor">
	<td class="colFirst"><code>int</code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getK()">getK</a></span>()</code></th>
	<td class="colLast">
	<div class="block">Gets the current configured <i>k</i></div>
	</td>
	</tr>
	<tr id="i3" class="rowColor">
	<td class="colFirst"><code><a href="DoublesSketchBuilder.html" title="class in org.apache.datasketches.quantiles">DoublesSketchBuilder</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setK(int)">setK</a></span>(int k)</code></th>
	<td class="colLast">
	<div class="block">Sets the parameter <i>k</i> that determines the accuracy and size of the sketch.</div>
	</td>
	</tr>
	<tr id="i4" class="altColor">
	<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
	<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
	<td class="colLast">
	<div class="block">Creates a human readable string that describes the current configuration of this builder.</div>
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	<h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
	<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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	<h4>DoublesSketchBuilder</h4>
	<pre>public DoublesSketchBuilder()</pre>
	<div class="block">Constructor for a new DoublesSketchBuilder. The default configuration is
	<ul>
	<li>k: 128. This produces a normalized rank error of about 1.7%</li>
	<li>Memory: null</li>
	</ul></div>
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	<a id="setK(int)">
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	<h4>setK</h4>
	<pre class="methodSignature">public <a href="DoublesSketchBuilder.html" title="class in org.apache.datasketches.quantiles">DoublesSketchBuilder</a> setK(int k)</pre>
	<div class="block">Sets the parameter <i>k</i> that determines the accuracy and size of the sketch.</div>
	<dl>
	<dt><span class="paramLabel">Parameters:</span></dt>
	<dd><code>k</code> - determines the accuracy and size of the sketch.
	It is recommended that <i>k</i> be a power of 2 to enable unioning of sketches with
	different <i>k</i>. It is only possible to union from
	larger <i>k</i> to smaller <i>k</i>.</dd>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>this builder</dd>
	</dl>
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	<h4>getK</h4>
	<pre class="methodSignature">public int getK()</pre>
	<div class="block">Gets the current configured <i>k</i></div>
	<dl>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>the current configured <i>k</i></dd>
	</dl>
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	<h4>build</h4>
	<pre class="methodSignature">public <a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a> build()</pre>
	<div class="block">Returns an UpdateDoublesSketch with the current configuration of this Builder.</div>
	<dl>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>a UpdateDoublesSketch</dd>
	</dl>
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	<h4>build</h4>
	<pre class="methodSignature">public <a href="UpdateDoublesSketch.html" title="class in org.apache.datasketches.quantiles">UpdateDoublesSketch</a> build(org.apache.datasketches.memory.WritableMemory dstMem)</pre>
	<div class="block">Returns a quantiles UpdateDoublesSketch with the current configuration of this builder
	and the specified backing destination Memory store.</div>
	<dl>
	<dt><span class="paramLabel">Parameters:</span></dt>
	<dd><code>dstMem</code> - destination memory for use by the sketch</dd>
	<dt><span class="returnLabel">Returns:</span></dt>
	<dd>an UpdateDoublesSketch</dd>
	</dl>
	</li>
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	<h4>toString</h4>
	<pre class="methodSignature">public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> toString()</pre>
	<div class="block">Creates a human readable string that describes the current configuration of this builder.</div>
	<dl>
	<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
	<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a></code> in class <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></dd>
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