FFT Class Reference

#include <FFT.h>

Inheritance diagram for FFT:

List of all members.

Public Member Functions
	FFT (ApplicationWindow *parent, Graph *g, const QString &curveTitle, double start, double end)
	FFT (ApplicationWindow *parent, Graph *g, const QString &curveTitle)
	FFT (ApplicationWindow *parent, Table *t, const QString &realColName, const QString &imagColName=QString(), int from=1, int to=-1)
void	normalizeAmplitudes (bool norm=true)
void	setInverseFFT (bool inverse=true)
void	setSampling (double sampling)
void	shiftFrequencies (bool shift=true)
Private Member Functions
QString	fftCurve ()
QString	fftTable ()
void	init ()
void	output (const QString &text)
void	output ()
	Performs the data analysis and takes care of the output.
bool	setDataFromTable (Table *t, const QString &realColName, const QString &imagColName=QString(), int from=0, int to=-1)
Private Attributes
int	d_imag_col
bool	d_inverse
	Flag telling if an inverse FFT must be performed.
bool	d_normalize
	Flag telling if the amplitudes in the output spectrum must be normalized.
int	d_real_col
double	d_sampling
bool	d_shift_order
	Flag telling if the output frequencies must be shifted in order to have a zero-centered spectrum.

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Constructor & Destructor Documentation

FFT::FFT	(	ApplicationWindow *	parent,
		Table *	t,
		const QString &	realColName,
		const QString &	imagColName = QString(),
		int	from = 1,
		int	to = -1
	)

References init(), and setDataFromTable().

FFT::FFT	(	ApplicationWindow *	parent,
		Graph *	g,
		const QString &	curveTitle
	)

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

FFT::FFT	(	ApplicationWindow *	parent,
		Graph *	g,
		const QString &	curveTitle,
		double	start,
		double	end
	)

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

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Member Function Documentation

QString FFT::fftCurve

(

)

[private]

References Filter::d_curve, ApplicationWindow::d_decimal_digits, Filter::d_explanation, Filter::d_init_err, d_inverse, Filter::d_n, d_normalize, d_sampling, d_shift_order, Filter::d_x, Filter::d_y, and ApplicationWindow::locale().

Referenced by output().

QString FFT::fftTable

(

)

[private]

References Table::colName(), ApplicationWindow::d_decimal_digits, Filter::d_explanation, Filter::d_init_err, d_inverse, Filter::d_n, d_normalize, d_real_col, d_sampling, d_shift_order, Filter::d_table, Filter::d_x, Filter::d_y, and ApplicationWindow::locale().

Referenced by output().

void FFT::init

(

)

[private]

Reimplemented from Filter.

References d_imag_col, d_inverse, d_normalize, Filter::d_output_graph, d_real_col, d_sampling, and d_shift_order.

Referenced by FFT().

void FFT::normalizeAmplitudes

(

bool

norm = true

)

[inline]

References d_normalize.

Referenced by FFTDialog::accept().

void FFT::output

(

const QString &

text

)

[private]

References MultiLayer::activeLayer(), ColorBox::color(), Filter::createOutputGraph(), Filter::d_curveColorIndex, Filter::d_explanation, Filter::d_graphics_display, d_inverse, Filter::d_n, Filter::d_output_graph, Filter::d_result_table, ApplicationWindow::generateUniqueName(), Graph::insertCurve(), ApplicationWindow::newHiddenTable(), Graph::setXAxisTitle(), and Graph::setYAxisTitle().

void FFT::output

(

)

[private, virtual]

Performs the data analysis and takes care of the output.

Reimplemented from Filter.

References Filter::d_curve, Filter::d_graph, Filter::d_table, fftCurve(), and fftTable().

bool FFT::setDataFromTable	(	Table *	t,
		const QString &	realColName,
		const QString &	imagColName = QString(),
		int	from = 0,
		int	to = -1
	)			[private, virtual]

Reimplemented from Filter.

References Table::cell(), Table::colIndex(), Filter::d_curve, Filter::d_graph, d_imag_col, Filter::d_init_err, Filter::d_n, d_real_col, Filter::d_table, Filter::d_x, Filter::d_y, Table::Numeric, and Table::numRows().

Referenced by FFT().

void FFT::setInverseFFT

(

bool

inverse = true

)

[inline]

References d_inverse.

Referenced by FFTDialog::accept().

void FFT::setSampling

(

double

sampling

)

[inline]

References d_sampling.

Referenced by FFTDialog::accept().

void FFT::shiftFrequencies

(

bool

shift = true

)

[inline]

References d_shift_order.

Referenced by FFTDialog::accept().

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Member Data Documentation

int FFT::d_imag_col [private]

Referenced by init(), and setDataFromTable().

bool FFT::d_inverse [private]

Flag telling if an inverse FFT must be performed.

Referenced by fftCurve(), fftTable(), init(), output(), and setInverseFFT().

bool FFT::d_normalize [private]

Flag telling if the amplitudes in the output spectrum must be normalized.

Referenced by fftCurve(), fftTable(), init(), and normalizeAmplitudes().

int FFT::d_real_col [private]

Referenced by fftTable(), init(), and setDataFromTable().

double FFT::d_sampling [private]

Referenced by fftCurve(), fftTable(), init(), and setSampling().

bool FFT::d_shift_order [private]

Flag telling if the output frequencies must be shifted in order to have a zero-centered spectrum.

Referenced by fftCurve(), fftTable(), init(), and shiftFrequencies().

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

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