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<html>
  <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>,&nbsp;&nbsp;<a href="waverec.htm">
        <tt>
          <b>waverec</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="wrcoef.htm">
        <tt>
          <b>wrcoef</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
  </body>
</html>