#include <FFTFilter.h>

Inheritance diagram for FFTFilter:

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, Graph g, const QString &curveTitle, int m=1)
	FFTFilter (ApplicationWindow parent, Graph g, const QString &curveTitle, double start, double end, 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)
void	setFilterType (FilterType type)
Public Member Functions inherited from Filter
int	dataSize ()
	Returns the size of the fitted data set.
bool	error ()
	Filter (ApplicationWindow parent, Table t=0, const char *name=0)
	Filter (ApplicationWindow parent, Graph g=0, const char *name=0)
virtual QString	legendInfo ()
	Output string added to the plot as a new legend.
virtual bool	run ()
	Actually does the job. Should be reimplemented in derived classes.
void	setColor (int colorId)
	Sets the color of the output fit curve.
void	setColor (const QString &colorName)
	Sets the color of the output fit curve. Provided for convenience. To be used in scripts only!
virtual void	setDataCurve (int curve, double start, double end)
bool	setDataFromCurve (const QString &curveTitle, Graph *g=0)
bool	setDataFromCurve (const QString &curveTitle, double from, double to, Graph *g=0)
void	setInterval (double from, double to)
	Changes the data range if the source curve was already assigned. Provided for convenience.
void	setMaximumIterations (int iter)
	Sets the maximum number of iterations to be performed during an iterative session.
void	setOutputPoints (int points)
	Sets the number of points in the output curve.
void	setOutputPrecision (int digits)
	Sets the precision used for the output.
void	setTolerance (double eps)
	Sets the tolerance used by the GSL routines.
virtual void	showLegend ()
	Adds a new legend to the plot. Calls virtual legendInfo()
	~Filter ()

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.

Additional Inherited Members
Protected Member Functions inherited from Filter
QwtPlotCurve *	addResultCurve (double x, double y)
	Adds the result curve to the target output plot window. Creates a hidden table and frees the input data from memory.
int	curveIndex (const QString &curveTitle, Graph *g)
	Performs checks and returns the index of the source data curve if OK, -1 otherwise.
virtual bool	isDataAcceptable ()
virtual QString	logInfo ()
	Output string added to the log pannel of the application.
virtual void	output ()
	Performs the data analysis and takes care of the output.
Protected Attributes inherited from Filter
QwtPlotCurve *	d_curve
	The curve to be analysed.
int	d_curveColorIndex
	Color index of the result curve.
QString	d_explanation
	String explaining the operation in the comment of the result table and in the project explorer.
double	d_from
	Data interval.
Graph *	d_graph
	The graph where the result curve should be displayed.
bool	d_init_err
	Error flag telling if something went wrong during the initialization phase.
int	d_max_iterations
	Maximum number of iterations per fit.
int	d_min_points
	Minimum number of data points necessary to perform the operation.
int	d_n
	Size of the data arrays.
int	d_points
	Number of result points to de calculated and displayed in the output curve.
int	d_prec
	Precision (number of significant digits) used for the results output.
bool	d_sort_data
	Specifies if the filter needs sorted data as input.
Table *	d_table
	A table source of data.
double	d_to
double	d_tolerance
	GSL Tolerance, if ever needed...
double *	d_x
	x data set to be analysed
double *	d_y
	y data set to be analysed