FFTFilter Class Reference

#include <FFTFilter.h>

Inheritance diagram for FFTFilter:

List of all members.

Public Types
enum	FilterType { LowPass = 1, HighPass = 2, BandPass = 3, BandBlock = 4 }
Public Member Functions
void	enableOffset (bool offset=true)
	Enables/Disables the DC offset when applying a Band Pass/Band block filter.
	FFTFilter (ApplicationWindow *parent, QwtPlotCurve *c, int m=1)
	FFTFilter (ApplicationWindow *parent, QwtPlotCurve *c, double start, double end, int m=1)
	FFTFilter (ApplicationWindow *parent, Graph *g, const QString &curveTitle, int m=1)
	FFTFilter (ApplicationWindow *parent, Graph *g, const QString &curveTitle, double start, double end, int m=1)
	FFTFilter (ApplicationWindow *parent, Table *t, const QString &xCol, const QString &yCol, int start=0, int end=-1, int m=1)
void	setBand (double lowFreq, double highFreq)
	Sets the cutoff frequencies. To be used only for the Band Pass and Band block filters.
void	setCutoff (double f)
	Sets the cutoff frequency. To be used only for Low Pass and High Pass filters.
void	setFilterType (int type)
Private Member Functions
void	calculateOutputData (double *x, double *y)
	Calculates the data for the output curve and store it in the X an Y vectors.
void	init (int m)
Private Attributes
FilterType	d_filter_type
	The filter type.
double	d_high_freq
	Upper edge of the band for Band Pass and Band block filters.
double	d_low_freq
	Cutoff frequency for Low Pass and High Pass filters. Lower edge of the band for Band Pass and Band block filters.
bool	d_offset
	Flag telling if the DC offset must be added/substracted when applying a Band Pass/Band block filter respectively.

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Member Enumeration Documentation

enum FFTFilter::FilterType

Enumerator:

LowPass
HighPass
BandPass
BandBlock

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Constructor & Destructor Documentation

FFTFilter::FFTFilter	(	ApplicationWindow *	parent,
		QwtPlotCurve *	c,
		int	m = 1
	)

References Filter::init(), and Filter::setDataFromCurve().

FFTFilter::FFTFilter	(	ApplicationWindow *	parent,
		QwtPlotCurve *	c,
		double	start,
		double	end,
		int	m = 1
	)

References Filter::init(), and Filter::setDataFromCurve().

FFTFilter::FFTFilter	(	ApplicationWindow *	parent,
		Graph *	g,
		const QString &	curveTitle,
		int	m = 1
	)

References Filter::init(), and Filter::setDataFromCurve().

FFTFilter::FFTFilter	(	ApplicationWindow *	parent,
		Graph *	g,
		const QString &	curveTitle,
		double	start,
		double	end,
		int	m = 1
	)

References Filter::init(), and Filter::setDataFromCurve().

FFTFilter::FFTFilter	(	ApplicationWindow *	parent,
		Table *	t,
		const QString &	xCol,
		const QString &	yCol,
		int	start = 0,
		int	end = -1,
		int	m = 1
	)

References Filter::init(), and Filter::setDataFromTable().

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Member Function Documentation

void FFTFilter::calculateOutputData	(	double *	X,
		double *	Y
	)		[private, virtual]

Calculates the data for the output curve and store it in the X an Y vectors.

Reimplemented from Filter.

References Filter::d_explanation, d_filter_type, d_high_freq, d_low_freq, Filter::d_n, d_offset, Filter::d_points, Filter::d_x, and Filter::d_y.

void FFTFilter::enableOffset

(

bool

offset = true

)

[inline]

Enables/Disables the DC offset when applying a Band Pass/Band block filter.

References d_offset.

Referenced by FilterDialog::filter().

void FFTFilter::init

(

int

m

)

[private]

References d_high_freq, d_low_freq, Filter::d_n, d_offset, Filter::d_points, and setFilterType().

void FFTFilter::setBand	(	double	lowFreq,
		double	highFreq
	)

Sets the cutoff frequencies. To be used only for the Band Pass and Band block filters.

References d_filter_type, d_high_freq, Filter::d_init_err, and d_low_freq.

Referenced by FilterDialog::filter().

void FFTFilter::setCutoff

(

double

f

)

Sets the cutoff frequency. To be used only for Low Pass and High Pass filters.

References d_filter_type, and d_low_freq.

Referenced by FilterDialog::filter().

void FFTFilter::setFilterType

(

int

type

)

References d_filter_type, and Filter::d_init_err.

Referenced by init().

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Member Data Documentation

FilterType FFTFilter::d_filter_type [private]

The filter type.

Referenced by calculateOutputData(), setBand(), setCutoff(), and setFilterType().

double FFTFilter::d_high_freq [private]

Upper edge of the band for Band Pass and Band block filters.

Referenced by calculateOutputData(), init(), and setBand().

double FFTFilter::d_low_freq [private]

Cutoff frequency for Low Pass and High Pass filters. Lower edge of the band for Band Pass and Band block filters.

Referenced by calculateOutputData(), init(), setBand(), and setCutoff().

bool FFTFilter::d_offset [private]

Flag telling if the DC offset must be added/substracted when applying a Band Pass/Band block filter respectively.

Referenced by calculateOutputData(), enableOffset(), and init().

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

• qtiplot/src/analysis/FFTFilter.h
• qtiplot/src/analysis/FFTFilter.cpp