measure distance from k-means cluster centers using a user-specified expression More...

#include <vtkKMeansDistanceFunctorCalculator.h>

Inheritance diagram for vtkKMeansDistanceFunctorCalculator:

Collaboration diagram for vtkKMeansDistanceFunctorCalculator:

Public Types
typedef vtkKMeansDistanceFunctor	Superclass

Public Types inherited from vtkKMeansDistanceFunctor
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtkKMeansDistanceFunctorCalculator *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...

void	operator() (double &, vtkVariantArray , vtkVariantArray ) override
	Compute the distance from one observation to another, returning the distance in the first argument. More...


virtual void	SetDistanceExpression (const char *)
	Set/get the distance function expression. More...

virtual char *	GetDistanceExpression ()
	Set/get the distance function expression. More...


virtual void	SetFunctionParser (vtkFunctionParser *)
	Set/get the string containing an expression which evaluates to the distance metric used for k-means computation. More...

virtual vtkFunctionParser *	GetFunctionParser ()
	Set/get the string containing an expression which evaluates to the distance metric used for k-means computation. More...

Public Member Functions inherited from vtkKMeansDistanceFunctor
vtkKMeansDistanceFunctor *	NewInstance () const

virtual vtkVariantArray *	GetEmptyTuple (vtkIdType dimension)
	Return an empty tuple. More...

virtual void	PairwiseUpdate (vtkTable clusterCenters, vtkIdType row, vtkVariantArray data, vtkIdType dataCardinality, vtkIdType totalCardinality)
	This is called once per observation per run per iteration in order to assign the observation to its nearest cluster center after the distance functor has been evaluated for all the cluster centers. More...

virtual void	PerturbElement (vtkTable , vtkTable , vtkIdType, vtkIdType, vtkIdType, double)
	When a cluster center (1) has no observations that are closer to it than other cluster centers or (2) has exactly the same coordinates as another cluster center, its coordinates should be perturbed. More...

virtual void *	AllocateElementArray (vtkIdType size)
	Allocate an array large enough to hold size coordinates and return a void pointer to this array. More...

virtual void	DeallocateElementArray (void *)
	Free an array allocated with AllocateElementArray. More...

virtual vtkAbstractArray *	CreateCoordinateArray ()
	Return a vtkAbstractArray capable of holding cluster center coordinates. More...

virtual void	PackElements (vtkTable curTable, void vElements)
	Pack the cluster center coordinates in vElements into columns of curTable. More...

virtual int	GetDataType ()
	Return the data type used to store cluster center coordinates. More...

virtual void	UnPackElements (vtkTable curTable, vtkTable newTable, void vLocalElements, void vGlobalElements, int np)
	Unpack the cluster center coordinates in vElements into columns of curTable. More...

virtual void	UnPackElements (vtkTable curTable, void vLocalElements, vtkIdType numRows, vtkIdType numCols)
	Unpack the cluster center coordinates in vElements into columns of curTable. More...

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time. More...

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

vtkTypeBool	InvokeEvent (unsigned long event)

vtkTypeBool	InvokeEvent (const char *event)

std::string	GetObjectDescription () const override
	The object description printed in messages and PrintSelf output. More...

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

vtkTypeBool	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

vtkTypeBool	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not. More...

virtual void	SetObjectName (const std::string &objectName)
	Set/get the name of this object for reporting purposes. More...

virtual std::string	GetObjectName () const
	Set/get the name of this object for reporting purposes. More...

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space. More...

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual bool	UsesGarbageCollector () const
	Indicate whether the class uses `vtkGarbageCollector` or not. More...

Static Public Member Functions
static vtkKMeansDistanceFunctorCalculator *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkKMeansDistanceFunctorCalculator *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkKMeansDistanceFunctor
static vtkKMeansDistanceFunctor *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkKMeansDistanceFunctor *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (vtkTypeBool val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static vtkTypeBool	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkKMeansDistanceFunctorCalculator ()

	~vtkKMeansDistanceFunctorCalculator () override

Protected Member Functions inherited from vtkKMeansDistanceFunctor
	vtkKMeansDistanceFunctor ()

	~vtkKMeansDistanceFunctor () override

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events. More...

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
char *	DistanceExpression

int	TupleSize

vtkFunctionParser *	FunctionParser

Protected Attributes inherited from vtkKMeansDistanceFunctor
vtkVariantArray *	EmptyTuple

vtkTable *	CenterUpdates

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

std::string	ObjectName

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

measure distance from k-means cluster centers using a user-specified expression

This is a subclass of the default k-means distance functor that allows the user to specify a distance function as a string. The provided expression is evaluated whenever the parenthesis operator is invoked but this is much slower than the default distance calculation.

User-specified distance expressions should be written in terms of two vector variables named "x" and "y". The length of the vectors will be determined by the k-means request and all columns of interest in the request must contain values that may be converted to a floating point representation. (Strings and vtkObject pointers are not allowed.) An example distance expression is "sqrt( (x0-y0)^2 + (x1-y1)^2 )" which computes Euclidean distance in a plane defined by the first 2 coordinates of the vectors specified.

Tests:: vtkKMeansDistanceFunctorCalculator (Tests)

Definition at line 36 of file vtkKMeansDistanceFunctorCalculator.h.

Member Typedef Documentation

◆ Superclass

typedef vtkKMeansDistanceFunctor vtkKMeansDistanceFunctorCalculator::Superclass

Definition at line 41 of file vtkKMeansDistanceFunctorCalculator.h.

Constructor & Destructor Documentation

◆ vtkKMeansDistanceFunctorCalculator()

vtkKMeansDistanceFunctorCalculator::vtkKMeansDistanceFunctorCalculator ( )

protected

◆ ~vtkKMeansDistanceFunctorCalculator()

vtkKMeansDistanceFunctorCalculator::~vtkKMeansDistanceFunctorCalculator ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkKMeansDistanceFunctorCalculator* vtkKMeansDistanceFunctorCalculator::New ( )

static

◆ IsTypeOf()

static vtkTypeBool vtkKMeansDistanceFunctorCalculator::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkKMeansDistanceFunctorCalculator::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkKMeansDistanceFunctor.

◆ SafeDownCast()

static vtkKMeansDistanceFunctorCalculator* vtkKMeansDistanceFunctorCalculator::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkKMeansDistanceFunctorCalculator::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkKMeansDistanceFunctor.

◆ NewInstance()

vtkKMeansDistanceFunctorCalculator* vtkKMeansDistanceFunctorCalculator::NewInstance ( ) const

◆ PrintSelf()

void vtkKMeansDistanceFunctorCalculator::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkKMeansDistanceFunctor.

◆ operator()()

void vtkKMeansDistanceFunctorCalculator::operator()	(	double &	,
		vtkVariantArray *	,
		vtkVariantArray *
	)

overridevirtual

Compute the distance from one observation to another, returning the distance in the first argument.

Reimplemented from vtkKMeansDistanceFunctor.

◆ SetDistanceExpression()

virtual void vtkKMeansDistanceFunctorCalculator::SetDistanceExpression ( const char * )

virtual

Set/get the distance function expression.

◆ GetDistanceExpression()

virtual char* vtkKMeansDistanceFunctorCalculator::GetDistanceExpression ( )

virtual

Set/get the distance function expression.

◆ SetFunctionParser()

virtual void vtkKMeansDistanceFunctorCalculator::SetFunctionParser ( vtkFunctionParser * )

virtual

Set/get the string containing an expression which evaluates to the distance metric used for k-means computation.

The scalar variables "x0", "x1", ... "xn" and "y0", "y1", ..., "yn" refer to the coordinates involved in the computation.

◆ GetFunctionParser()

virtual vtkFunctionParser* vtkKMeansDistanceFunctorCalculator::GetFunctionParser ( )

virtual

Set/get the string containing an expression which evaluates to the distance metric used for k-means computation.

The scalar variables "x0", "x1", ... "xn" and "y0", "y1", ..., "yn" refer to the coordinates involved in the computation.

Member Data Documentation

◆ DistanceExpression

char* vtkKMeansDistanceFunctorCalculator::DistanceExpression

protected

Definition at line 73 of file vtkKMeansDistanceFunctorCalculator.h.

◆ TupleSize

int vtkKMeansDistanceFunctorCalculator::TupleSize

protected

Definition at line 74 of file vtkKMeansDistanceFunctorCalculator.h.

◆ FunctionParser

vtkFunctionParser* vtkKMeansDistanceFunctorCalculator::FunctionParser

protected

Definition at line 75 of file vtkKMeansDistanceFunctorCalculator.h.

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

Filters/Statistics/vtkKMeansDistanceFunctorCalculator.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkKMeansDistanceFunctorCalculator()

◆ ~vtkKMeansDistanceFunctorCalculator()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ operator()()

◆ SetDistanceExpression()

◆ GetDistanceExpression()

◆ SetFunctionParser()

◆ GetFunctionParser()

Member Data Documentation

◆ DistanceExpression

◆ TupleSize

◆ FunctionParser