64 lines
2.9 KiB
HTML
64 lines
2.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/REC-html40/loose.dtd">
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<html>
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<head>
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<title>Description of dbeta</title>
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<meta name="keywords" content="dbeta">
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<meta name="description" content="DBETA The beta density function">
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<meta name="generator" content="m2html © 2003 Guillaume Flandin">
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<body>
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<a name="_top"></a>
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<div><a href="../index.html">Home</a> > <a href="index.html">.</a> > dbeta.m</div>
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<!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td>
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<td align="right"><a href="index.html">Index for . <img alt=">" border="0" src="../right.png"></a></td></tr></table>-->
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<h1>dbeta
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</h1>
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<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="box"><strong>DBETA The beta density function</strong></div>
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<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="box"><strong>function d = dbeta(x,a,b) </strong></div>
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<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="fragment"><pre class="comment">DBETA The beta density function
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f = dbeta(x,a,b)</pre></div>
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<!-- crossreference -->
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<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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This function calls:
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<ul style="list-style-image:url(../matlabicon.gif)">
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</ul>
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This function is called by:
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<ul style="list-style-image:url(../matlabicon.gif)">
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<li><a href="qbeta.html" class="code" title="function x = qbeta(p,a,b)">qbeta</a> QBETA The beta inverse distribution function</li></ul>
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<!-- crossreference -->
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<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="fragment"><pre>0001 <a name="_sub0" href="#_subfunctions" class="code">function d = dbeta(x,a,b)</a>
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0002 <span class="comment">%DBETA The beta density function</span>
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0003 <span class="comment">%</span>
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0004 <span class="comment">% f = dbeta(x,a,b)</span>
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0005
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0006 <span class="comment">% Anders Holtsberg, 18-11-93</span>
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0007 <span class="comment">% Copyright (c) Anders Holtsberg</span>
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0008
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0009 <span class="keyword">if</span> any(any((a<=0)|(b<=0)))
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0010 error(<span class="string">'Parameter a or b is nonpositive'</span>)
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0011 <span class="keyword">end</span>
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0012
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0013 I = find((x<0)|(x>1));
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0014
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0015 d = x.^(a-1) .* (1-x).^(b-1) ./ beta(a,b);
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0016 d(I) = 0*I;</pre></div>
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<hr><address>Generated on Fri 16-Jun-2006 09:09:06 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address>
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