<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Calculated the singular values of a matrix</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="lapack.pseudoinverse.html">Lapack::pseudoInverse</a></div> <div class="next" style="text-align: right; float: right;"><a href="lapack.solvelinearequation.html">Lapack::solveLinearEquation</a></div> <div class="up"><a href="class.lapack.html">Lapack</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="lapack.singularvalues" class="refentry"> <div class="refnamediv"> <h1 class="refname">Lapack::singularValues</h1> <p class="verinfo">(PECL lapack >= 0.1.0)</p><p class="refpurpose"><span class="refname">Lapack::singularValues</span> — <span class="dc-title">Calculated the singular values of a matrix</span></p> </div> <div class="refsect1 description" id="refsect1-lapack.singularvalues-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="modifier">static</span> <span class="type">array</span> <span class="methodname"><strong>Lapack::singularValues</strong></span> ( <span class="methodparam"><span class="type">array</span> <code class="parameter">$a</code></span> )</div> <p class="para rdfs-comment"> Calculate the singular values of the matrix A. </p> </div> <div class="refsect1 parameters" id="refsect1-lapack.singularvalues-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <span class="term"><em><code class="parameter">a</code></em></span> <dd> <p class="para"> The matrix to calculate the singular values for </p> </dd> </dt> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-lapack.singularvalues-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The singular values </p> </div> <div class="refsect1 examples" id="refsect1-lapack.singularvalues-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3445"> <p><strong>Example #1 Using <span class="function"><strong>Lapack::singularValues()</strong></span>:</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /><br /> $a </span><span style="color: #007700">= array(<br /> array( </span><span style="color: #0000BB">7.52</span><span style="color: #007700">, -</span><span style="color: #0000BB">1.10</span><span style="color: #007700">, -</span><span style="color: #0000BB">7.95</span><span style="color: #007700">, </span><span style="color: #0000BB">1.08 </span><span style="color: #007700">),<br /> array(-</span><span style="color: #0000BB">0.76</span><span style="color: #007700">, </span><span style="color: #0000BB">0.62</span><span style="color: #007700">, </span><span style="color: #0000BB">9.34</span><span style="color: #007700">, -</span><span style="color: #0000BB">7.10 </span><span style="color: #007700">),<br /> array( </span><span style="color: #0000BB">5.13</span><span style="color: #007700">, </span><span style="color: #0000BB">6.62</span><span style="color: #007700">, -</span><span style="color: #0000BB">5.66</span><span style="color: #007700">, </span><span style="color: #0000BB">0.87 </span><span style="color: #007700">),<br /> array(-</span><span style="color: #0000BB">4.75</span><span style="color: #007700">, </span><span style="color: #0000BB">8.52</span><span style="color: #007700">, </span><span style="color: #0000BB">5.75</span><span style="color: #007700">, </span><span style="color: #0000BB">5.30 </span><span style="color: #007700">),<br /> array( </span><span style="color: #0000BB">1.33</span><span style="color: #007700">, </span><span style="color: #0000BB">4.91</span><span style="color: #007700">, -</span><span style="color: #0000BB">5.49</span><span style="color: #007700">, -</span><span style="color: #0000BB">3.52 </span><span style="color: #007700">),<br /> array(-</span><span style="color: #0000BB">2.40</span><span style="color: #007700">, -</span><span style="color: #0000BB">6.77</span><span style="color: #007700">, </span><span style="color: #0000BB">2.34</span><span style="color: #007700">, </span><span style="color: #0000BB">3.95 </span><span style="color: #007700">),<br /> );<br /><br /><br /> </span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">Lapack</span><span style="color: #007700">::</span><span style="color: #0000BB">singularValues</span><span style="color: #007700">(</span><span style="color: #0000BB">$a</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> </div><hr /><div class="manualnavbar" 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