FFT Class Reference

#include <FFT.h>

Inheritance diagram for FFT:

List of all members.

Public Member Functions
Matrix *	amplitudesMatrix ()
	FFT (ApplicationWindow *parent, Table *t, const QString &realColName, const QString &imagColName=QString(), int from=1, int to=-1)
	FFT (ApplicationWindow *parent, QwtPlotCurve *c)
	FFT (ApplicationWindow *parent, QwtPlotCurve *c, double start, double end)
	FFT (ApplicationWindow *parent, Graph *g, const QString &curveTitle)
	FFT (ApplicationWindow *parent, Graph *g, const QString &curveTitle, double start, double end)
	FFT (ApplicationWindow *parent, Matrix *re, Matrix *im=NULL, bool inverse=false, bool shift=true, bool norm=false, bool outputPower2Sizes=true)
Matrix *	imaginaryOutputMatrix ()
void	normalizeAmplitudes (bool norm=true)
Matrix *	realOutputMatrix ()
void	setInverseFFT (bool inverse=true)
void	setSampling (double sampling)
void	shiftFrequencies (bool shift=true)
Private Member Functions
void	fftCurve ()
void	fftMatrix ()
void	fftTable ()
void	init ()
void	output ()
	Performs the data analysis and takes care of the output.
void	outputGraphs ()
bool	setDataFromTable (Table *t, const QString &realColName, const QString &imagColName=QString(), int from=0, int to=-1)
Private Attributes
Matrix *	d_amp_matrix
Matrix *	d_im_matrix
Matrix *	d_im_out_matrix
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.
bool	d_power2
Matrix *	d_re_out_matrix
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.

---

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,
		QwtPlotCurve *	c
	)

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

FFT::FFT	(	ApplicationWindow *	parent,
		QwtPlotCurve *	c,
		double	start,
		double	end
	)

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

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().

FFT::FFT	(	ApplicationWindow *	parent,
		Matrix *	re,
		Matrix *	im = NULL,
		bool	inverse = false,
		bool	shift = true,
		bool	norm = false,
		bool	outputPower2Sizes = true
	)

References d_imag_col, Filter::d_output_graph, d_real_col, and d_sampling.

---

Member Function Documentation

Matrix* FFT::amplitudesMatrix

(

)

[inline]

References d_amp_matrix.

void FFT::fftCurve

(

)

[private]

References ApplicationWindow::d_decimal_digits, d_inverse, Filter::d_n, d_normalize, Filter::d_result_table, d_sampling, d_shift_order, Filter::d_x, Filter::d_y, Filter::memoryErrorMessage(), and Table::setText().

Referenced by output().

void FFT::fftMatrix

(

)

[private]

References Matrix::allocateMatrixData(), Matrix::cell(), Matrix::colorMap(), d_amp_matrix, d_im_matrix, d_im_out_matrix, d_inverse, Filter::d_matrix, d_normalize, d_power2, d_re_out_matrix, d_shift_order, Matrix::dx(), Matrix::dy(), fft2d(), fft2d_inv(), Matrix::freeMatrixData(), ApplicationWindow::generateUniqueName(), Matrix::headerViewType(), isPower2(), ApplicationWindow::newMatrix(), next2Power(), Matrix::numCols(), Matrix::numRows(), Matrix::range(), Matrix::setCell(), Matrix::setColorMap(), Matrix::setCoordinates(), Matrix::setHeaderViewType(), Matrix::setViewType(), MdiSubWindow::setWindowLabel(), ApplicationWindow::setWindowName(), and Matrix::viewType().

Referenced by output().

void FFT::fftTable

(

)

[private]

References ApplicationWindow::d_decimal_digits, d_inverse, Filter::d_n, d_normalize, Filter::d_result_table, d_sampling, d_shift_order, Filter::d_x, Filter::d_y, Filter::memoryErrorMessage(), and Table::setText().

Referenced by output().

Matrix* FFT::imaginaryOutputMatrix

(

)

[inline]

References d_im_out_matrix.

void FFT::init

(

)

[private]

Reimplemented from Filter.

References d_amp_matrix, d_im_matrix, d_im_out_matrix, d_imag_col, d_inverse, d_normalize, Filter::d_output_graph, d_re_out_matrix, 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

(

)

[private, virtual]

Performs the data analysis and takes care of the output.

Reimplemented from Filter.

References Table::colName(), Filter::d_curve, Filter::d_explanation, Filter::d_graph, Filter::d_graphics_display, d_inverse, Filter::d_matrix, Filter::d_n, d_real_col, Filter::d_result_table, Filter::d_table, fftCurve(), fftMatrix(), fftTable(), ApplicationWindow::generateUniqueName(), ApplicationWindow::newHiddenTable(), outputGraphs(), and Table::setHeader().

void FFT::outputGraphs

(

)

[private]

References MultiLayer::addLayer(), MultiLayer::AlignCanvases, MultiLayer::arrangeLayers(), Filter::createOutputGraph(), Filter::d_curveColor, d_inverse, Filter::d_matrix, Filter::d_output_graph, Filter::d_result_table, Graph::enableAxis(), ScaleDraw::HideBegin, ScaleDraw::HideBeginEnd, Graph::insertCurve(), MultiLayer::linkXLayerAxes(), Graph::multiLayer(), Graph::removeLegend(), MultiLayer::setAlignPolicy(), Graph::setAxisTitle(), MultiLayer::setCols(), MultiLayer::setCommonLayerAxes(), MultiLayer::setRows(), ScaleDraw::setShowTicksPolicy(), MultiLayer::setSpacing(), Graph::setXAxisTitle(), Graph::setYAxisTitle(), and Graph::updatePlot().

Referenced by output().

Matrix* FFT::realOutputMatrix

(

)

[inline]

References d_re_out_matrix.

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

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, Filter::freeMemory(), Filter::memoryErrorMessage(), 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().

---

Member Data Documentation

Matrix* FFT::d_amp_matrix [private]

Referenced by amplitudesMatrix(), fftMatrix(), and init().

Matrix* FFT::d_im_matrix [private]

Referenced by fftMatrix(), and init().

Matrix* FFT::d_im_out_matrix [private]

Referenced by fftMatrix(), imaginaryOutputMatrix(), and init().

int FFT::d_imag_col [private]

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

bool FFT::d_inverse [private]

Flag telling if an inverse FFT must be performed.

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

bool FFT::d_normalize [private]

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

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

bool FFT::d_power2 [private]

Referenced by fftMatrix().

Matrix* FFT::d_re_out_matrix [private]

Referenced by fftMatrix(), init(), and realOutputMatrix().

int FFT::d_real_col [private]

Referenced by FFT(), init(), output(), and setDataFromTable().

double FFT::d_sampling [private]

Referenced by FFT(), 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(), fftMatrix(), fftTable(), init(), and shiftFrequencies().

---

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

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