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<html><head><title>R: Continuous Wavelet Transform with Phase Derivative</title>
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<table width="100%" summary="page for cwtp {Rwave}"><tr><td>cwtp {Rwave}</td><td align="right">R Documentation</td></tr></table>
<h2>Continuous Wavelet Transform with Phase Derivative</h2>
<h3>Description</h3>
<p>
Computes the continuous wavelet transform with (complex-valued)
Morlet wavelet and its phase derivative.
</p>
<h3>Usage</h3>
<pre>
cwtp(input, noctave, nvoice=1, w0=2 * pi, 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>w0</code></td>
<td>
central frequency of the wavelet.
</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 <i>x</i> nb scales), otherwise, the output is a 3D
array (signal size <i>x</i> noctave <i>x</i> 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>
<h3>Value</h3>
<p>
list containing the continuous (complex) wavelet transform
and the phase derivative
</p>
<table summary="R argblock">
<tr valign="top"><td><code>wt</code></td>
<td>
array of complex numbers for the values of the continuous wavelet
transform.
</td></tr>
<tr valign="top"><td><code>f</code></td>
<td>
array of the same dimensions containing the values of the derivative
of the phase of the continuous 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="cgt.html">cgt</a></code>, <code><a href="cwt.html">cwt</a></code>, <code><a href="cwtth.html">cwtTh</a></code>,
<code><a href="dog.html">DOG</a></code> for wavelet transform, and <code><a href="gabor.html">gabor</a></code> for
continuous Gabor transform.
</p>
<hr><div align="center">[Package <em>Rwave</em> version 1.24 <a href="00Index.html">Index]</a></div>
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