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<html><head><title>R: Cauchy's wavelet transform</title>
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<table width="100%" summary="page for cwtTh {Rwave}"><tr><td>cwtTh {Rwave}</td><td align="right">R Documentation</td></tr></table>
<h2>Cauchy's wavelet transform</h2>


<h3>Description</h3>

<p>
Compute the continuous wavelet transform with (complex-valued)
Cauchy's wavelet.
</p>


<h3>Usage</h3>

<pre>cwtTh(input, noctave, nvoice=1, moments, twoD=TRUE, plot=TRUE)
</pre>


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>input</code></td>
<td>
input signal (possibly complex-valued).
</td></tr>
<tr valign="top"><td><code>noctave</code></td>
<td>
number of powers of 2 for the scale variable.
</td></tr>
<tr valign="top"><td><code>nvoice</code></td>
<td>
number of scales in each octave
(i.e. between two consecutive powers of 2).
</td></tr>
<tr valign="top"><td><code>moments</code></td>
<td>
number of vanishing moments.
</td></tr>
<tr valign="top"><td><code>twoD</code></td>
<td>
logical variable set to <code>T</code> to organize the output as a 2D array
(signal size x nb scales), otherwise, the output is a 3D array (signal
size x noctave x nvoice).
</td></tr>
<tr valign="top"><td><code>plot</code></td>
<td>
if set to <code>T</code>, display the modulus of the continuous wavelet
transform on the graphic device.
</td></tr>
</table>

<h3>Details</h3>

<p>
The output contains the (complex) values of the wavelet transform of
the input signal.  The format of the output can be
</p>
<p>
2D array (signal size <i>x</i> nb scales)
</p>
<p>
3D array (signal size <i>x</i> noctave <i>x</i> nvoice)
</p>


<h3>Value</h3>

<table summary="R argblock">
<tr valign="top"><td><code>tmp</code></td>
<td>
continuous (complex) wavelet transform.</td></tr>
</table>

<h3>References</h3>

<p>
See discussions in the text of ``Practical Time-Frequency Analysis''.
</p>


<h3>See Also</h3>

<p>
<code><a href="cwt.html">cwt</a></code>, <code><a href="cwtp.html">cwtp</a></code>, <code><a href="dog.html">DOG</a></code>,
<code><a href="gabor.html">gabor</a></code>.
</p>



<hr><div align="center">[Package <em>Rwave</em> version 1.24 <a href="00Index.html">Index]</a></div>

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