A class for KMeans clustering. More...

#include <vtkKMeansStatistics.h>

Inheritance diagram for vtkKMeansStatistics:

Collaboration diagram for vtkKMeansStatistics:

Public Types
typedef vtkStatisticsAlgorithm	Superclass

Public Types inherited from vtkStatisticsAlgorithm
enum	InputPorts { INPUT_DATA = 0, LEARN_PARAMETERS = 1, INPUT_MODEL = 2 }
	enumeration values to specify input port types More...

enum	OutputIndices { OUTPUT_DATA = 0, OUTPUT_MODEL = 1, OUTPUT_TEST = 2 }
	enumeration values to specify output port types More...

typedef vtkTableAlgorithm	Superclass

Public Types inherited from vtkTableAlgorithm
typedef vtkAlgorithm	Superclass

Public Types inherited from vtkAlgorithm
enum	DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }
	Values used for setting the desired output precision for various algorithms. More...

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...

vtkKMeansStatistics *	NewInstance () const

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

void	Aggregate (vtkDataObjectCollection , vtkMultiBlockDataSet ) override
	Given a collection of models, calculate aggregate model NB: not implemented. More...

bool	SetParameter (const char *parameter, int index, vtkVariant value) override
	A convenience method for setting properties by name. More...


virtual void	SetDistanceFunctor (vtkKMeansDistanceFunctor *)
	Set the DistanceFunctor. More...

virtual vtkKMeansDistanceFunctor *	GetDistanceFunctor ()
	Set the DistanceFunctor. More...


virtual void	SetDefaultNumberOfClusters (int)
	Set/get the DefaultNumberOfClusters, used when no initial cluster coordinates are specified. More...

virtual int	GetDefaultNumberOfClusters ()
	Set/get the DefaultNumberOfClusters, used when no initial cluster coordinates are specified. More...


virtual void	SetKValuesArrayName (const char *)
	Set/get the KValuesArrayName. More...

virtual char *	GetKValuesArrayName ()
	Set/get the KValuesArrayName. More...


virtual void	SetMaxNumIterations (int)
	Set/get the MaxNumIterations used to terminate iterations on cluster center coordinates when the relative tolerance can not be met. More...

virtual int	GetMaxNumIterations ()
	Set/get the MaxNumIterations used to terminate iterations on cluster center coordinates when the relative tolerance can not be met. More...


virtual void	SetTolerance (double)
	Set/get the relative Tolerance used to terminate iterations on cluster center coordinates. More...

virtual double	GetTolerance ()
	Set/get the relative Tolerance used to terminate iterations on cluster center coordinates. More...

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

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

virtual void	SetLearnOptionParameterConnection (vtkAlgorithmOutput *params)
	A convenience method for setting learn input parameters (if one is expected or allowed). More...

virtual void	SetLearnOptionParameters (vtkDataObject *params)
	A convenience method for setting learn input parameters (if one is expected or allowed). More...

virtual void	SetInputModelConnection (vtkAlgorithmOutput *model)
	A convenience method for setting the input model connection (if one is expected or allowed). More...

virtual void	SetInputModel (vtkDataObject *model)
	A convenience method for setting the input model (if one is expected or allowed). More...

virtual void	SetColumnStatus (const char *namCol, int status)
	Add or remove a column from the current analysis request. More...

virtual void	ResetAllColumnStates ()
	Set the status of each and every column in the current request to OFF (0). More...

virtual int	RequestSelectedColumns ()
	Use the current column status values to produce a new request for statistics to be produced when RequestData() is called. More...

virtual void	ResetRequests ()
	Empty the list of current requests. More...

virtual vtkIdType	GetNumberOfRequests ()
	Return the number of requests. More...

virtual vtkIdType	GetNumberOfColumnsForRequest (vtkIdType request)
	Return the number of columns for a given request. More...

virtual const char *	GetColumnForRequest (vtkIdType r, vtkIdType c)
	Provide the name of the c-th column for the r-th request. More...

virtual int	GetColumnForRequest (vtkIdType r, vtkIdType c, vtkStdString &columnName)

void	AddColumn (const char *namCol)
	Convenience method to create a request with a single column name `namCol` in a single call; this is the preferred method to select columns, ensuring selection consistency (a single column per request). More...

void	AddColumnPair (const char namColX, const char namColY)
	Convenience method to create a request with a single column name pair (`namColX`, `namColY`) in a single call; this is the preferred method to select columns pairs, ensuring selection consistency (a pair of columns per request). More...

virtual void	SetLearnOption (bool)
	Set/Get the Learn operation. More...

virtual bool	GetLearnOption ()
	Set/Get the Learn operation. More...

virtual void	SetDeriveOption (bool)
	Set/Get the Derive operation. More...

virtual bool	GetDeriveOption ()
	Set/Get the Derive operation. More...

virtual void	SetAssessOption (bool)
	Set/Get the Assess operation. More...

virtual bool	GetAssessOption ()
	Set/Get the Assess operation. More...

virtual void	SetTestOption (bool)
	Set/Get the Test operation. More...

virtual bool	GetTestOption ()
	Set/Get the Test operation. More...

virtual void	SetNumberOfPrimaryTables (vtkIdType)
	Set/Get the number of tables in the primary model. More...

virtual vtkIdType	GetNumberOfPrimaryTables ()
	Set/Get the number of tables in the primary model. More...

virtual void	SetAssessNames (vtkStringArray *)
	Set/get assessment names. More...

virtual vtkStringArray *	GetAssessNames ()
	Set/get assessment names. More...

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

int	ProcessRequest (vtkInformation , vtkInformationVector , vtkInformationVector ) override
	see vtkAlgorithm for details More...

vtkTable *	GetOutput ()
	Get the output data object for a port on this algorithm. More...

vtkTable *	GetOutput (int index)

void	SetInputData (vtkDataObject *obj)
	Assign a data object as input. More...

void	SetInputData (int index, vtkDataObject *obj)

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

int	HasExecutive ()
	Check whether this algorithm has an assigned executive. More...

vtkExecutive *	GetExecutive ()
	Get this algorithm's executive. More...

virtual void	SetExecutive (vtkExecutive *executive)
	Set this algorithm's executive. More...

int	ProcessRequest (vtkInformation request, vtkCollection inInfo, vtkInformationVector *outInfo)
	Version of ProcessRequest() that is wrapped. More...

virtual int	ComputePipelineMTime (vtkInformation request, vtkInformationVector inInfoVec, vtkInformationVector outInfoVec, int requestFromOutputPort, vtkMTimeType *mtime)
	A special version of ProcessRequest meant specifically for the pipeline modified time request. More...

virtual int	ModifyRequest (vtkInformation *request, int when)
	This method gives the algorithm a chance to modify the contents of a request before or after (specified in the when argument) it is forwarded. More...

vtkInformation *	GetInputPortInformation (int port)
	Get the information object associated with an input port. More...

vtkInformation *	GetOutputPortInformation (int port)
	Get the information object associated with an output port. More...

int	GetNumberOfInputPorts ()
	Get the number of input ports used by the algorithm. More...

int	GetNumberOfOutputPorts ()
	Get the number of output ports provided by the algorithm. More...

void	UpdateProgress (double amount)
	Update the progress of the process object. More...

virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char fieldAssociation, const char attributeTypeorName)
	String based versions of SetInputArrayToProcess(). More...

vtkInformation *	GetInputArrayInformation (int idx)
	Get the info object for the specified input array to this algorithm. More...

void	RemoveAllInputs ()
	Remove all the input data. More...

vtkDataObject *	GetOutputDataObject (int port)
	Get the data object that will contain the algorithm output for the given port. More...

vtkDataObject *	GetInputDataObject (int port, int connection)
	Get the data object that will contain the algorithm input for the given port and given connection. More...

virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
	Remove a connection from the given input port index. More...

virtual void	RemoveInputConnection (int port, int idx)
	Remove a connection given by index idx. More...

virtual void	RemoveAllInputConnections (int port)
	Removes all input connections. More...

virtual void	SetInputDataObject (int port, vtkDataObject *data)
	Sets the data-object as an input on the given port index. More...

virtual void	SetInputDataObject (vtkDataObject *data)

virtual void	AddInputDataObject (int port, vtkDataObject *data)
	Add the data-object as an input to this given port. More...

virtual void	AddInputDataObject (vtkDataObject *data)

vtkAlgorithmOutput *	GetOutputPort (int index)
	Get a proxy object corresponding to the given output port of this algorithm. More...

vtkAlgorithmOutput *	GetOutputPort ()

int	GetNumberOfInputConnections (int port)
	Get the number of inputs currently connected to a port. More...

int	GetTotalNumberOfInputConnections ()
	Get the total number of inputs for this algorithm. More...

vtkAlgorithmOutput *	GetInputConnection (int port, int index)
	Get the algorithm output port connected to an input port. More...

vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
	Returns the algorithm and the output port index of that algorithm connected to a port-index pair. More...

vtkAlgorithm *	GetInputAlgorithm (int port, int index)
	Returns the algorithm connected to a port-index pair. More...

vtkAlgorithm *	GetInputAlgorithm ()
	Equivalent to GetInputAlgorithm(0, 0). More...

vtkExecutive *	GetInputExecutive (int port, int index)
	Returns the executive associated with a particular input connection. More...

vtkExecutive *	GetInputExecutive ()
	Equivalent to GetInputExecutive(0, 0) More...

vtkInformation *	GetInputInformation (int port, int index)
	Return the information object that is associated with a particular input connection. More...

vtkInformation *	GetInputInformation ()
	Equivalent to GetInputInformation(0, 0) More...

vtkInformation *	GetOutputInformation (int port)
	Return the information object that is associated with a particular output port. More...

virtual int	Update (int port, vtkInformationVector *requests)
	This method enables the passing of data requests to the algorithm to be used during execution (in addition to bringing a particular port up-to-date). More...

virtual int	Update (vtkInformation *requests)
	Convenience method to update an algorithm after passing requests to its first output port. More...

virtual int	UpdatePiece (int piece, int numPieces, int ghostLevels, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port. More...

virtual int	UpdateExtent (const int extents[6])
	Convenience method to update an algorithm after passing requests to its first output port. More...

virtual int	UpdateTimeStep (double time, int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=nullptr)
	Convenience method to update an algorithm after passing requests to its first output port. More...

virtual void	UpdateInformation ()
	Bring the algorithm's information up-to-date. More...

virtual void	UpdateDataObject ()
	Create output object(s). More...

virtual void	PropagateUpdateExtent ()
	Propagate meta-data upstream. More...

virtual void	UpdateWholeExtent ()
	Bring this algorithm's outputs up-to-date. More...

void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
	Convenience routine to convert from a linear ordering of input connections to a port/connection pair. More...

virtual vtkInformation *	GetInformation ()
	Set/Get the information object associated with this algorithm. More...

virtual void	SetInformation (vtkInformation *)
	Set/Get the information object associated with this algorithm. More...

void	Register (vtkObjectBase *o) override
	Participate in garbage collection. More...

void	UnRegister (vtkObjectBase *o) override
	Participate in garbage collection. More...

virtual void	SetAbortExecute (vtkTypeBool)
	Set/Get the AbortExecute flag for the process object. More...

virtual vtkTypeBool	GetAbortExecute ()
	Set/Get the AbortExecute flag for the process object. More...

virtual void	AbortExecuteOn ()
	Set/Get the AbortExecute flag for the process object. More...

virtual void	AbortExecuteOff ()
	Set/Get the AbortExecute flag for the process object. More...

virtual void	SetProgress (double)
	Set/Get the execution progress of a process object. More...

virtual double	GetProgress ()
	Set/Get the execution progress of a process object. More...

void	SetProgressText (const char *ptext)
	Set the current text message associated with the progress state. More...

virtual char *	GetProgressText ()
	Set the current text message associated with the progress state. More...

virtual unsigned long	GetErrorCode ()
	The error code contains a possible error that occurred while reading or writing the file. More...

virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
	Set the input data arrays that this algorithm will process. More...

virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
	Set the input data arrays that this algorithm will process. More...

virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
	Set the input data arrays that this algorithm will process. More...

virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...

virtual void	SetInputConnection (vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...

virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...

virtual void	AddInputConnection (vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...

virtual void	Update (int port)
	Bring this algorithm's outputs up-to-date. More...

virtual void	Update ()
	Bring this algorithm's outputs up-to-date. More...

virtual void	SetReleaseDataFlag (int)
	Turn release data flag on or off for all output ports. More...

virtual int	GetReleaseDataFlag ()
	Turn release data flag on or off for all output ports. More...

void	ReleaseDataFlagOn ()
	Turn release data flag on or off for all output ports. More...

void	ReleaseDataFlagOff ()
	Turn release data flag on or off for all output ports. More...

int	UpdateExtentIsEmpty (vtkInformation pinfo, vtkDataObject output)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...

int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...

int *	GetUpdateExtent ()
	These functions return the update extent for output ports that use 3D extents. More...

int *	GetUpdateExtent (int port)
	These functions return the update extent for output ports that use 3D extents. More...

void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...

void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...

void	GetUpdateExtent (int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...

void	GetUpdateExtent (int port, int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...

int	GetUpdatePiece ()
	These functions return the update extent for output ports that use piece extents. More...

int	GetUpdatePiece (int port)
	These functions return the update extent for output ports that use piece extents. More...

int	GetUpdateNumberOfPieces ()
	These functions return the update extent for output ports that use piece extents. More...

int	GetUpdateNumberOfPieces (int port)
	These functions return the update extent for output ports that use piece extents. More...

int	GetUpdateGhostLevel ()
	These functions return the update extent for output ports that use piece extents. More...

int	GetUpdateGhostLevel (int port)
	These functions return the update extent for output ports that use piece extents. More...

void	SetProgressObserver (vtkProgressObserver *)
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...

virtual vtkProgressObserver *	GetProgressObserver ()
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. 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)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

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...

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

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

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

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

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

void	PrintRevisions (ostream &)
	Legacy. 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...

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)

static vtkKMeansStatistics *	SafeDownCast (vtkObjectBase *o)

static vtkKMeansStatistics *	New ()

Static Public Member Functions inherited from vtkStatisticsAlgorithm
static vtkTypeBool	IsTypeOf (const char *type)

static vtkStatisticsAlgorithm *	SafeDownCast (vtkObjectBase *o)

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

static vtkTypeBool	IsTypeOf (const char *type)

static vtkTableAlgorithm *	SafeDownCast (vtkObjectBase *o)

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

static vtkTypeBool	IsTypeOf (const char *type)

static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)

static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
	Keys used to specify input port requirements. More...

static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()

static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()

static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()

static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()

static vtkInformationIntegerKey *	INPUT_PORT ()

static vtkInformationIntegerKey *	INPUT_CONNECTION ()

static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
	This key tells the executive that a particular output port is capable of producing an arbitrary subextent of the whole extent. More...

static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
	Key that tells the pipeline that a particular algorithm can or cannot handle piece request. More...

static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
	If the DefaultExecutivePrototype is set, a copy of it is created in CreateDefaultExecutive() using NewInstance(). More...

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

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkKMeansStatistics ()

	~vtkKMeansStatistics () override

void	Learn (vtkTable , vtkTable , vtkMultiBlockDataSet *) override
	Execute the calculations required by the Learn option. More...

void	Derive (vtkMultiBlockDataSet *) override
	Execute the calculations required by the Derive option. More...

void	Assess (vtkTable , vtkMultiBlockDataSet , vtkTable *) override
	Execute the calculations required by the Assess option. More...

void	Test (vtkTable , vtkMultiBlockDataSet , vtkTable *) override
	Execute the calculations required by the Test option. More...

void	SelectAssessFunctor (vtkTable inData, vtkDataObject inMeta, vtkStringArray rowNames, AssessFunctor &dfunc) override
	Provide the appropriate assessment functor. More...

virtual void	UpdateClusterCenters (vtkTable newClusterElements, vtkTable curClusterElements, vtkIdTypeArray numMembershipChanges, vtkIdTypeArray numElementsInCluster, vtkDoubleArray error, vtkIdTypeArray startRunID, vtkIdTypeArray endRunID, vtkIntArray computeRun)
	Subroutine to update new cluster centers from the old centers. More...

virtual vtkIdType	GetTotalNumberOfObservations (vtkIdType numObservations)
	Subroutine to get the total number of observations. More...

int	InitializeDataAndClusterCenters (vtkTable inParameters, vtkTable inData, vtkTable dataElements, vtkIdTypeArray numberOfClusters, vtkTable curClusterElements, vtkTable newClusterElements, vtkIdTypeArray startRunID, vtkIdTypeArray endRunID)
	Subroutine to initialize the cluster centers using those provided by the user in input port LEARN_PARAMETERS. More...

virtual void	CreateInitialClusterCenters (vtkIdType numToAllocate, vtkIdTypeArray numberOfClusters, vtkTable inData, vtkTable curClusterElements, vtkTable newClusterElements)
	Subroutine to initialize cluster centerss if not provided by the user. More...

Protected Member Functions inherited from vtkStatisticsAlgorithm
	vtkStatisticsAlgorithm ()

	~vtkStatisticsAlgorithm () override

int	FillInputPortInformation (int port, vtkInformation *info) override
	Fill the input port information objects for this algorithm. More...

int	FillOutputPortInformation (int port, vtkInformation *info) override
	Fill the output port information objects for this algorithm. More...

int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector ) override
	This is called by the superclass. More...

void	Assess (vtkTable , vtkMultiBlockDataSet , vtkTable *, int)
	A convenience implementation for generic assessment with variable number of variables. More...

Protected Member Functions inherited from vtkTableAlgorithm
	vtkTableAlgorithm ()

	~vtkTableAlgorithm () override

virtual int	RequestInformation (vtkInformation request, vtkInformationVector inputVector, vtkInformationVector outputVector)

virtual int	RequestUpdateExtent (vtkInformation , vtkInformationVector , vtkInformationVector )
	This is called by the superclass. More...

Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()

	~vtkAlgorithm () override

virtual void	SetNumberOfInputPorts (int n)
	Set the number of input ports used by the algorithm. More...

virtual void	SetNumberOfOutputPorts (int n)
	Set the number of output ports provided by the algorithm. More...

int	InputPortIndexInRange (int index, const char *action)

int	OutputPortIndexInRange (int index, const char *action)

int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
	Get the assocition of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...

vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
	This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector. More...

virtual vtkExecutive *	CreateDefaultExecutive ()
	Create a default executive. More...

void	ReportReferences (vtkGarbageCollector *) override

virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
	Replace the Nth connection on the given input port. More...

virtual void	SetNumberOfInputConnections (int port, int n)
	Set the number of input connections on the given input port. More...

void	SetInputDataInternal (int port, vtkDataObject *input)
	These methods are used by subclasses to implement methods to set data objects directly as input. More...

void	AddInputDataInternal (int port, vtkDataObject *input)

int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...

int	GetInputArrayAssociation (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...

vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...

vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...

vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...

vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...

virtual void	SetErrorCode (unsigned long)
	The error code contains a possible error that occurred while reading or writing the file. More...

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	CollectRevisions (ostream &)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
int	DefaultNumberOfClusters
	This is the default number of clusters used when the user does not provide initial cluster centers. More...

char *	KValuesArrayName
	This is the name of the column that specifies the number of clusters in each run. More...

int	MaxNumIterations
	This is the maximum number of iterations allowed if the new cluster centers have not yet converged. More...

double	Tolerance
	This is the percentage of data elements that swap cluster IDs. More...

vtkKMeansDistanceFunctor *	DistanceFunctor
	This is the Distance functor. More...

Protected Attributes inherited from vtkStatisticsAlgorithm
vtkIdType	NumberOfPrimaryTables

bool	LearnOption

bool	DeriveOption

bool	AssessOption

bool	TestOption

vtkStringArray *	AssessNames

vtkStatisticsAlgorithmPrivate *	Internals

Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information

double	Progress

char *	ProgressText

vtkProgressObserver *	ProgressObserver

unsigned long	ErrorCode
	The error code contains a possible error that occurred while reading or writing the file. More...

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
vtkTypeBool	AbortExecute

Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()

Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

A class for KMeans clustering.

This class takes as input an optional vtkTable on port LEARN_PARAMETERS specifying initial set(s) of cluster values of the following form:

          K     | Col1            |  ...    | ColN
     -----------+-----------------+---------+---------------
          M     |clustCoord(1, 1) |  ...    | clustCoord(1, N)
          M     |clustCoord(2, 1) |  ...    | clustCoord(2, N)
          .     |       .         |   .     |        .
          .     |       .         |   .     |        .
          .     |       .         |   .     |        .
          M     |clustCoord(M, 1) |  ...    | clustCoord(M, N)
          L     |clustCoord(1, 1) |  ...    | clustCoord(1, N)
          L     |clustCoord(2, 1) |  ...    | clustCoord(2, N)
          .     |       .         |   .     |        .
          .     |       .         |   .     |        .
          .     |       .         |   .     |        .
          L     |clustCoord(L, 1) |  ...    | clustCoord(L, N)

Because the desired value of K is often not known in advance and the results of the algorithm are dependent on the initial cluster centers, we provide a mechanism for the user to test multiple runs or sets of cluster centers within a single call to the Learn phase. The first column of the table identifies the number of clusters K in the particular run (the entries in this column should be of type vtkIdType), while the remaining columns are a subset of the columns contained in the table on port INPUT_DATA. We require that all user specified clusters be of the same dimension N and consequently, that the LEARN_PARAMETERS table have N+1 columns. Due to this restriction, only one request can be processed for each call to the Learn phase and subsequent requests are silently ignored. Note that, if the first column of the LEARN_PARAMETERS table is not of type vtkIdType, then the table will be ignored and a single run will be performed using the first DefaultNumberOfClusters input data observations as initial cluster centers.

When the user does not supply an initial set of clusters, then the first DefaultNumberOfClusters input data observations are used as initial cluster centers and a single run is performed.

This class provides the following functionalities, depending on the operation in which it is executed:

Learn: calculates new cluster centers for each run. The output metadata on port OUTPUT_MODEL is a multiblock dataset containing at a minimum one vtkTable with columns specifying the following for each run: the run ID, number of clusters, number of iterations required for convergence, total error associated with the cluster (sum of squared Euclidean distance from each observation to its nearest cluster center), the cardinality of the cluster, and the new cluster coordinates.
Derive: An additional vtkTable is stored in the multiblock dataset output on port OUTPUT_MODEL. This table contains columns that store for each run: the runID, number of clusters, total error for all clusters in the run, local rank, and global rank. The local rank is computed by comparing squared Euclidean errors of all runs with the same number of clusters. The global rank is computed analagously across all runs.
Assess: This requires a multiblock dataset (as computed from Learn and Derive) on input port INPUT_MODEL and tabular data on input port INPUT_DATA that contains column names matching those of the tables on input port INPUT_MODEL. The assess mode reports the closest cluster center and associated squared Euclidean distance of each observation in port INPUT_DATA's table to the cluster centers for each run in the multiblock dataset provided on port INPUT_MODEL.

The code can handle a wide variety of data types as it operates on vtkAbstractArrays and is not limited to vtkDataArrays. A default distance functor that computes the sum of the squares of the Euclidean distance between two objects is provided (vtkKMeansDistanceFunctor). The default distance functor can be overridden to use alternative distance metrics.

Thanks:: Thanks to Janine Bennett, David Thompson, and Philippe Pebay of Sandia National Laboratories for implementing this class. Updated by Philippe Pebay, Kitware SAS 2012

Examples:: vtkKMeansStatistics (Examples)

Tests:: vtkKMeansStatistics (Tests)

Definition at line 114 of file vtkKMeansStatistics.h.

Member Typedef Documentation

typedef vtkStatisticsAlgorithm vtkKMeansStatistics::Superclass

Definition at line 117 of file vtkKMeansStatistics.h.

Constructor & Destructor Documentation

vtkKMeansStatistics::vtkKMeansStatistics ( )

protected

vtkKMeansStatistics::~vtkKMeansStatistics ( )

overrideprotected

Member Function Documentation

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

static

virtual vtkTypeBool vtkKMeansStatistics::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 vtkStatisticsAlgorithm.

Reimplemented in vtkPKMeansStatistics.

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

static

virtual vtkObjectBase* vtkKMeansStatistics::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkStatisticsAlgorithm.

Reimplemented in vtkPKMeansStatistics.

vtkKMeansStatistics* vtkKMeansStatistics::NewInstance ( ) const

void vtkKMeansStatistics::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 vtkTableAlgorithm.

static vtkKMeansStatistics* vtkKMeansStatistics::New ( )

static

virtual void vtkKMeansStatistics::SetDistanceFunctor ( vtkKMeansDistanceFunctor * )

virtual

Set the DistanceFunctor.

virtual vtkKMeansDistanceFunctor* vtkKMeansStatistics::GetDistanceFunctor ( )

virtual

Set the DistanceFunctor.

virtual void vtkKMeansStatistics::SetDefaultNumberOfClusters ( int )

virtual

Set/get the DefaultNumberOfClusters, used when no initial cluster coordinates are specified.

virtual int vtkKMeansStatistics::GetDefaultNumberOfClusters ( )

virtual

Set/get the DefaultNumberOfClusters, used when no initial cluster coordinates are specified.

virtual void vtkKMeansStatistics::SetKValuesArrayName ( const char * )

virtual

Set/get the KValuesArrayName.

virtual char* vtkKMeansStatistics::GetKValuesArrayName ( )

virtual

Set/get the KValuesArrayName.

virtual void vtkKMeansStatistics::SetMaxNumIterations ( int )

virtual

Set/get the MaxNumIterations used to terminate iterations on cluster center coordinates when the relative tolerance can not be met.

virtual int vtkKMeansStatistics::GetMaxNumIterations ( )

virtual

Set/get the MaxNumIterations used to terminate iterations on cluster center coordinates when the relative tolerance can not be met.

virtual void vtkKMeansStatistics::SetTolerance ( double )

virtual

Set/get the relative Tolerance used to terminate iterations on cluster center coordinates.

virtual double vtkKMeansStatistics::GetTolerance ( )

virtual

Set/get the relative Tolerance used to terminate iterations on cluster center coordinates.

void vtkKMeansStatistics::Aggregate	(	vtkDataObjectCollection *	,
		vtkMultiBlockDataSet *
	)

inlineoverridevirtual

Given a collection of models, calculate aggregate model NB: not implemented.

Implements vtkStatisticsAlgorithm.

Definition at line 167 of file vtkKMeansStatistics.h.

bool vtkKMeansStatistics::SetParameter	(	const char *	parameter,
		int	index,
		vtkVariant	value
	)

overridevirtual

A convenience method for setting properties by name.

Reimplemented from vtkStatisticsAlgorithm.

void vtkKMeansStatistics::Learn	(	vtkTable *	,
		vtkTable *	,
		vtkMultiBlockDataSet *
	)

overrideprotectedvirtual

Execute the calculations required by the Learn option.

Implements vtkStatisticsAlgorithm.

void vtkKMeansStatistics::Derive ( vtkMultiBlockDataSet * )

overrideprotectedvirtual

Execute the calculations required by the Derive option.

Implements vtkStatisticsAlgorithm.

void vtkKMeansStatistics::Assess	(	vtkTable *	,
		vtkMultiBlockDataSet *	,
		vtkTable *
	)

overrideprotectedvirtual

Execute the calculations required by the Assess option.

Implements vtkStatisticsAlgorithm.

void vtkKMeansStatistics::Test	(	vtkTable *	,
		vtkMultiBlockDataSet *	,
		vtkTable *
	)

inlineoverrideprotectedvirtual

Execute the calculations required by the Test option.

Implements vtkStatisticsAlgorithm.

Definition at line 202 of file vtkKMeansStatistics.h.

void vtkKMeansStatistics::SelectAssessFunctor	(	vtkTable *	inData,
		vtkDataObject *	inMeta,
		vtkStringArray *	rowNames,
		AssessFunctor *&	dfunc
	)

overrideprotectedvirtual

Provide the appropriate assessment functor.

Implements vtkStatisticsAlgorithm.

virtual void vtkKMeansStatistics::UpdateClusterCenters	(	vtkTable *	newClusterElements,
		vtkTable *	curClusterElements,
		vtkIdTypeArray *	numMembershipChanges,
		vtkIdTypeArray *	numElementsInCluster,
		vtkDoubleArray *	error,
		vtkIdTypeArray *	startRunID,
		vtkIdTypeArray *	endRunID,
		vtkIntArray *	computeRun
	)

protectedvirtual

Subroutine to update new cluster centers from the old centers.

Called from within Learn (and will be overridden by vtkPKMeansStatistics to handle distributed datasets).

Reimplemented in vtkPKMeansStatistics.

virtual vtkIdType vtkKMeansStatistics::GetTotalNumberOfObservations ( vtkIdType numObservations )

protectedvirtual

Subroutine to get the total number of observations.

Called from within Learn (and will be overridden by vtkPKMeansStatistics to handle distributed datasets).

Reimplemented in vtkPKMeansStatistics.

int vtkKMeansStatistics::InitializeDataAndClusterCenters	(	vtkTable *	inParameters,
		vtkTable *	inData,
		vtkTable *	dataElements,
		vtkIdTypeArray *	numberOfClusters,
		vtkTable *	curClusterElements,
		vtkTable *	newClusterElements,
		vtkIdTypeArray *	startRunID,
		vtkIdTypeArray *	endRunID
	)

protected

Subroutine to initialize the cluster centers using those provided by the user in input port LEARN_PARAMETERS.

If no cluster centers are provided, the subroutine uses the first DefaultNumberOfClusters input data points as initial cluster centers. Called from within Learn.

virtual void vtkKMeansStatistics::CreateInitialClusterCenters	(	vtkIdType	numToAllocate,
		vtkIdTypeArray *	numberOfClusters,
		vtkTable *	inData,
		vtkTable *	curClusterElements,
		vtkTable *	newClusterElements
	)

protectedvirtual

Subroutine to initialize cluster centerss if not provided by the user.

Called from within Learn (and will be overridden by vtkPKMeansStatistics to handle distributed datasets).

Reimplemented in vtkPKMeansStatistics.

Member Data Documentation

int vtkKMeansStatistics::DefaultNumberOfClusters

protected

This is the default number of clusters used when the user does not provide initial cluster centers.

Definition at line 265 of file vtkKMeansStatistics.h.

char* vtkKMeansStatistics::KValuesArrayName

protected

This is the name of the column that specifies the number of clusters in each run.

This is only used if the user has not specified initial clusters.

Definition at line 270 of file vtkKMeansStatistics.h.

int vtkKMeansStatistics::MaxNumIterations

protected

This is the maximum number of iterations allowed if the new cluster centers have not yet converged.

Definition at line 274 of file vtkKMeansStatistics.h.

double vtkKMeansStatistics::Tolerance

protected

This is the percentage of data elements that swap cluster IDs.

Definition at line 278 of file vtkKMeansStatistics.h.

vtkKMeansDistanceFunctor* vtkKMeansStatistics::DistanceFunctor

protected

This is the Distance functor.

The default is Euclidean distance, however this can be overridden.

Definition at line 282 of file vtkKMeansStatistics.h.

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

/home/demarle/Source/VTK/release/8.2/build/Utilities/Doxygen/dox/Filters/Statistics/vtkKMeansStatistics.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation