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costthresh Class Reference

The costthresh class implements a wavelet packet transform cost function which counts the values in the data set that are greater than a threshold value. More...

#include <costthresh.h>

Inheritance diagram for costthresh::

List of all members.

Public Methods
	costthresh (packnode< double > *node, double t)
	class constructor: calculate the wavelet packet cost function using a simple threshold, t. More...
Protected Methods
double	costCalc (packnode< double > *node)
	This is a simple threshold calculation. More...
Private Methods
double	abs (const double x)
	absolute value. More...
Private Attributes
double	thresh
	cost threshold. More...

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Detailed Description

The costthresh class implements a wavelet packet transform cost function which counts the values in the data set that are greater than a threshold value.

This threshold value is initialized in the constructor.

The costbase class provides the wavelet packet tree traversal function which calls the subclass's cost function.

Author:

Ian Kaplan

Definition at line 54 of file costthresh.h.

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Constructor & Destructor Documentation

costthresh::costthresh ( packnode< double > * node, double t ) [inline]

class constructor: calculate the wavelet packet cost function using a simple threshold, t. Definition at line 93 of file costthresh.h. { thresh = t; traverse( node ); }

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Member Function Documentation

double costthresh::abs ( const double x ) [inline, private]

absolute value. Definition at line 61 of file costthresh.h. Referenced by costCalc(). { double retval = x; if (retval < 0.0) retval = -retval; return retval; } // abs

double costthresh::costCalc ( packnode< double > * node ) [inline, protected, virtual]

This is a simple threshold calculation. The costCalc function returns the number of node data values whose absolute value is greater than the threshold. Reimplemented from costbase. Definition at line 76 of file costthresh.h. { double count = 0.0; if (node != 0) { size_t len = node->length(); for (int i = 0; i < len; i++) { if (abs((*node)[i]) > thresh) { count = count + 1.0; } } } return count; } // costCalc

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Member Data Documentation

double costthresh::thresh [private]

cost threshold. Definition at line 58 of file costthresh.h.

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The documentation for this class was generated from the following file:

• costthresh.h

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