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<html><head><title>R: Kernel for Reconstruction from Wavelet Ridges</title>
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<table width="100%" summary="page for kernel {Rwave}"><tr><td>kernel {Rwave}</td><td align="right">R Documentation</td></tr></table>
<h2>Kernel for Reconstruction from Wavelet Ridges</h2>
<h3>Description</h3>
<p>
Computes the cost from the sample of points on the estimated ridge
and the matrix used in the reconstruction of the original signal
</p>
<h3>Usage</h3>
<pre>
kernel(node, phinode, nvoice, x.inc=1, x.min=node[1],
x.max=node[length(node)], w0=2 * pi, plot=FALSE)
</pre>
<h3>Arguments</h3>
<table summary="R argblock">
<tr valign="top"><td><code>node</code></td>
<td>
values of the variable b for the nodes of the ridge.
</td></tr>
<tr valign="top"><td><code>phinode</code></td>
<td>
values of the scale variable a for the nodes of the ridge.
</td></tr>
<tr valign="top"><td><code>nvoice</code></td>
<td>
number of scales within 1 octave.
</td></tr>
<tr valign="top"><td><code>x.inc</code></td>
<td>
step unit for the computation of the kernel.
</td></tr>
<tr valign="top"><td><code>x.min</code></td>
<td>
minimal value of x for the computation of <i>Q_2</i>.
</td></tr>
<tr valign="top"><td><code>x.max</code></td>
<td>
maximal value of x for the computation of <i>Q_2</i>.
</td></tr>
<tr valign="top"><td><code>w0</code></td>
<td>
central frequency of the wavelet.
</td></tr>
<tr valign="top"><td><code>plot</code></td>
<td>
if set to TRUE, displays the modulus of the matrix of <i>Q_2</i>.
</td></tr>
</table>
<h3>Details</h3>
<p>
The kernel is evaluated using Romberg's method.
</p>
<h3>Value</h3>
<p>
matrix of the <i>Q_2</i> kernel</p>
<h3>References</h3>
<p>
See discussions in the text of "Time-Frequency Analysis".
</p>
<h3>See Also</h3>
<p>
<code><a href="gkernel.html">gkernel</a></code>, <code><a href="rkernel.html">rkernel</a></code>, <code><a href="zerokernel.html">zerokernel</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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