63 lines
2.9 KiB
HTML
63 lines
2.9 KiB
HTML
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<title>Description of dgamma</title>
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<meta name="description" content="DGAMMA The gamma density function">
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<div><a href="../index.html">Home</a> > <a href="index.html">.</a> > dgamma.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>dgamma
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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>DGAMMA The gamma 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 f = dgamma(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">DGAMMA The gamma density function
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f = dgamma(x,a)</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="qgamma.html" class="code" title="function x = qgamma(p,a)">qgamma</a> QGAMMA The gamma 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 f = dgamma(x,a,b)</a>
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0002 <span class="comment">%DGAMMA The gamma density function</span>
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0003 <span class="comment">%</span>
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0004 <span class="comment">% f = dgamma(x,a)</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))
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0010 error(<span class="string">'Parameter a is wrong'</span>)
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0011 <span class="keyword">end</span>
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0012
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0013 f = (x./b) .^ (a-1) .* exp(-x./b) ./ (b.*gamma(a));
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0014 I0 = find(x<0);
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0015 f(I0) = zeros(size(I0));</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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