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<head>
<title>upcoef</title>
</head>
<body bgcolor="#FFFFFF">
<center>Scilab Wavelet Toolbox Function </center>
<div align="right">Last update : June 2007 </div>
<p>
<b>upcoef</b> - Direct Restruction </p>
<h3>
<font color="blue">Calling Sequence</font>
</h3>
<dl>
<dd>
<tt>Y=upcoef(type,x,wname,[N],[L])</tt>
</dd>
<dd>
<tt>Y=upcoef(type,x,Lo_R,Hi_R,[N],[L])</tt>
</dd>
</dl>
<h3>
<font color="blue">Parameters</font>
</h3>
<ul>
<li>
<tt>
<b>type </b>
</tt>
: approximation or detail, 'a' or 'd'.
</li>
<li>
<tt>
<b>x </b>
</tt>
: input vector
</li>
<li>
<tt>
<b>wname </b>
</tt>
: wavelet name
</li>
<li>
<tt>
<b>X </b>
</tt>
: reconstruction
</li>
<li>
<tt>
<b>Lo_R </b>
</tt>
: lowpass synthesis filter
</li>
<li>
<tt>
<b>Hi_R </b>
</tt>
: highpass syntheis filter
</li>
<li>
<tt>
<b>N </b>
</tt>
: restruction level
</li>
<li>
<tt>
<b>L </b>
</tt>
: desired output length
</li>
</ul>
<h3>
<font color="blue">Description</font>
</h3>
<p>
upcoef is for upward reconstruction from any desired input vector.
</p>
<h3>
<font color="blue">Examples</font>
</h3>
<pre>
x=rand(1,100);
[cA,cD]=dwt(x,'db2');
Y=upcoef('a',cA,'db2',1);
Z=upcoef('a',cA,'db2',3);
</pre>
<h3>
<font color="blue">Author</font>
</h3>
<p>Roger Liu and Isaac Zhi </p>
<h3>
<font color="blue">See Also</font>
</h3>
<p>
<a href="wavedec.htm">
<tt>
<b>wavedec</b>
</tt>
</a>, <a href="waverec.htm">
<tt>
<b>waverec</b>
</tt>
</a>, <a href="wrcoef.htm">
<tt>
<b>wrcoef</b>
</tt>
</a>, </p>
</body>
</html>
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