vtkImageLinearFit Class Reference

#include <vtkImageLinearFit.h>

Inheritance diagram for vtkImageLinearFit:

[legend]Collaboration diagram for vtkImageLinearFit:

[legend]List of all members.

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Detailed Description

Performs a linear fitting on the input images using linear regression with the supplied input variables.

This filter must have 2 or greater inputs and produces an output with up to 6 components (the maximum in VTK). The inputs must all have the one scalar component, and the same scalar type. The output extents will be the intersection of the input extents and the output scalar type will be double. The first component (c0) will be the r-squared value from the linear regression and the second component (c1) will be the number of values actually fitted. If the StopAtFirstZero option is not turned on the second value will always be the number of inputs. The remaining components depend on the desired fitting and are listed below:

VTK_FIT_LINEAR (requires at least 2 inputs): Y = c2 + c3*X

VTK_FIT_QUADRATIC (requires at least 3 inputs): Y = c2 + c3*X + c4*X^2

VTK_FIT_CUBIC (requires at least 4 inputs): Y = c2 + c3*X + c4*X^2 + c5*X^3

VTK_FIT_EXPONENTIAL (requires at least 2 inputs): Y = c2*exp(c3*X)

VTK_FIT_LOGARITHMIC (requires at least 2 inputs): Y = c2 + c3*ln(X)

VTK_FIT_POWER (requires at least 2 inputs): Y = c2*X^c3

The input variables are set via the SetInputVariables function.

See also:

vtkImageMultipleInputFilter

Definition at line 81 of file vtkImageLinearFit.h.

Public Member Functions
	vtkTypeRevisionMacro (vtkImageLinearFit, vtkImageMultipleInputFilter)
void	PrintSelf (ostream &os, vtkIndent indent)
void	SetInputVariables (vtkDoubleArray *_arg)
vtkDoubleArray *	GetInputVariables ()
void	SetFitModel (int model)
virtual int	GetFitModel ()
void	SetFitModelToLinear ()
void	SetFitModelToQuadratic ()
void	SetFitModelToCubic ()
void	SetFitModelToExponential ()
void	SetFitModelToLogarithmic ()
void	SetFitModelToPower ()
virtual void	SetStopAtFirstZero (int)
virtual int	GetStopAtFirstZero ()
virtual void	StopAtFirstZeroOn ()
virtual void	StopAtFirstZeroOff ()
Static Public Member Functions
static vtkImageLinearFit *	New ()
static void	CalculateLinearFit (double *X, double *Y, unsigned int num, double &c3, double &c2, double &rSquared)
static void	CalculateQuadraticFit (double *X, double *Y, unsigned int num, double &c4, double &c3, double &c2, double &rSquared)
static void	CalculateCubicFit (double *X, double *Y, unsigned int num, double &c5, double &c4, double &c3, double &c2, double &rSquared)
static void	CalculateExponentialFit (double *X, double *Y, unsigned int num, double &c3, double &c2, double &rSquared)
static void	CalculateLogarithmicFit (double *X, double *Y, unsigned int num, double &c3, double &c2, double &rSquared)
static void	CalculatePowerFit (double *X, double *Y, unsigned int num, double &c3, double &c2, double &rSquared)
Protected Member Functions
	vtkImageLinearFit ()
	~vtkImageLinearFit ()
void	ExecuteInformation (vtkImageData **inputs, vtkImageData *output)
void	ExecuteInformation ()
void	ThreadedExecute (vtkImageData **inDatas, vtkImageData *outData, int extent[6], int id)
void	InitOutput (int outExt[6], vtkImageData *outData)
Protected Attributes
vtkDoubleArray *	InputVariables
int	StopAtFirstZero
int	FitModel

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Constructor & Destructor Documentation

vtkImageLinearFit::vtkImageLinearFit

(

)

[protected]

vtkImageLinearFit::~vtkImageLinearFit

(

)

[protected]

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Member Function Documentation

static vtkImageLinearFit* vtkImageLinearFit::New

(

)

[static]

Reimplemented from vtkAlgorithm.

vtkImageLinearFit::vtkTypeRevisionMacro	(	vtkImageLinearFit	,
		vtkImageMultipleInputFilter
	)

void vtkImageLinearFit::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)			[virtual]

Reimplemented from vtkImageMultipleInputFilter.

void vtkImageLinearFit::SetFitModel

(

int

model

)

Set/Get the fit model.

virtual int vtkImageLinearFit::GetFitModel

(

)

[virtual]

Set/Get the fit model.

void vtkImageLinearFit::SetFitModelToLinear

(

)

[inline]

Set/Get the fit model.

Definition at line 92 of file vtkImageLinearFit.h.

References VTK_FIT_LINEAR.

void vtkImageLinearFit::SetFitModelToQuadratic

(

)

[inline]

Set/Get the fit model.

Definition at line 93 of file vtkImageLinearFit.h.

References VTK_FIT_QUADRATIC.

void vtkImageLinearFit::SetFitModelToCubic

(

)

[inline]

Set/Get the fit model.

Definition at line 94 of file vtkImageLinearFit.h.

References VTK_FIT_CUBIC.

void vtkImageLinearFit::SetFitModelToExponential

(

)

[inline]

Set/Get the fit model.

Definition at line 95 of file vtkImageLinearFit.h.

References VTK_FIT_EXPONENTIAL.

void vtkImageLinearFit::SetFitModelToLogarithmic

(

)

[inline]

Set/Get the fit model.

Definition at line 96 of file vtkImageLinearFit.h.

References VTK_FIT_LOGARITHMIC.

void vtkImageLinearFit::SetFitModelToPower

(

)

[inline]

Set/Get the fit model.

Definition at line 97 of file vtkImageLinearFit.h.

References VTK_FIT_POWER.

void vtkImageLinearFit::SetInputVariables

(

vtkDoubleArray *

_arg

)

Set the input variables used to perform the linear regression (i.e. X variables).

vtkDoubleArray* vtkImageLinearFit::GetInputVariables

(

)

Get the input variables.

virtual void vtkImageLinearFit::SetStopAtFirstZero

(

int

)

[virtual]

Stop linear fit when the first zero is reached (default is off).

virtual int vtkImageLinearFit::GetStopAtFirstZero

(

)

[virtual]

Stop linear fit when the first zero is reached (default is off).

virtual void vtkImageLinearFit::StopAtFirstZeroOn

(

)

[virtual]

Stop linear fit when the first zero is reached (default is off).

virtual void vtkImageLinearFit::StopAtFirstZeroOff

(

)

[virtual]

Stop linear fit when the first zero is reached (default is off).

static void vtkImageLinearFit::CalculateLinearFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs a pure linear fit.

static void vtkImageLinearFit::CalculateQuadraticFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c4,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs a quadratic fit.

static void vtkImageLinearFit::CalculateCubicFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c5,
		double &	c4,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs a cubic fit.

static void vtkImageLinearFit::CalculateExponentialFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs an exponential fit.

static void vtkImageLinearFit::CalculateLogarithmicFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs a logarithmic fit.

static void vtkImageLinearFit::CalculatePowerFit	(	double *	X,
		double *	Y,
		unsigned int	num,
		double &	c3,
		double &	c2,
		double &	rSquared
	)			[static]

This function performs a power fit.

void vtkImageLinearFit::ExecuteInformation	(	vtkImageData **	inputs,
		vtkImageData *	output
	)			[protected, virtual]

Reimplemented from vtkImageMultipleInputFilter.

void vtkImageLinearFit::ExecuteInformation

(

)

[inline, protected, virtual]

Reimplemented from vtkImageMultipleInputFilter.

Definition at line 158 of file vtkImageLinearFit.h.

References vtkImageMultipleInputFilter::ExecuteInformation().

void vtkImageLinearFit::ThreadedExecute	(	vtkImageData **	inDatas,
		vtkImageData *	outData,
		int	extent[6],
		int	id
	)			[protected, virtual]

Reimplemented from vtkImageMultipleInputFilter.

void vtkImageLinearFit::InitOutput	(	int	outExt[6],
		vtkImageData *	outData
	)			[protected]

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Member Data Documentation

vtkDoubleArray* vtkImageLinearFit::InputVariables [protected]

Definition at line 165 of file vtkImageLinearFit.h.

int vtkImageLinearFit::StopAtFirstZero [protected]

Definition at line 167 of file vtkImageLinearFit.h.

int vtkImageLinearFit::FitModel [protected]

Definition at line 169 of file vtkImageLinearFit.h.

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

• dox/Imaging/vtkImageLinearFit.h

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