Threshold cells within multiple intervals. More...

#include <vtkMultiThreshold.h>

Inheritance diagram for vtkMultiThreshold:

Collaboration diagram for vtkMultiThreshold:

Classes
class	BooleanSet
	A subset of a mesh represented as a boolean set operation. More...

class	Interval
	A subset of a mesh represented by a range of acceptable attribute values. More...

class	NormKey
	A class with comparison operator used to index input array norms used in threshold rules. More...

class	Set
	A base class for representing threshold sets. More...

Public Types
enum	Closure { OPEN =0, CLOSED =1 }
	Whether the endpoint value of an interval should be included or excluded. More...

enum	Norm { LINFINITY_NORM =-3, L2_NORM =-2, L1_NORM =-1 }
	Norms that can be used to threshold vector attributes. More...

enum	SetOperation { AND, OR, XOR, WOR, NAND }
	Operations that can be performed on sets to generate another set. Most of these operators take 2 or more input sets. More...

typedef vtkMultiBlockDataSetAlgorithm	Superclass

typedef double(*	TupleNorm) (vtkDataArray *arr, vtkIdType tuple, int component)
	A pointer to a function that returns a norm (or a single component) of a tuple with 1 or more components. More...

Public Types inherited from vtkMultiBlockDataSetAlgorithm
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...

vtkMultiThreshold *	NewInstance () const

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

int	AddBooleanSet (int operation, int numInputs, int *inputs)
	Create a new mesh subset using boolean operations on pre-existing sets. More...

int	OutputSet (int setId)
	Create an output mesh containing a boolean or interval subset of the input mesh. More...

void	Reset ()
	Remove all the intervals currently defined. More...


int	AddIntervalSet (double xmin, double xmax, int omin, int omax, int assoc, const char *arrayName, int component, int allScalars)
	Add a mesh subset to be computed by thresholding an attribute of the input mesh. More...

int	AddIntervalSet (double xmin, double xmax, int omin, int omax, int assoc, int attribType, int component, int allScalars)
	Add a mesh subset to be computed by thresholding an attribute of the input mesh. More...


int	AddLowpassIntervalSet (double xmax, int assoc, const char *arrayName, int component, int allScalars)
	These convenience members make it easy to insert closed intervals. More...

int	AddHighpassIntervalSet (double xmin, int assoc, const char *arrayName, int component, int allScalars)
	These convenience members make it easy to insert closed intervals. More...

int	AddBandpassIntervalSet (double xmin, double xmax, int assoc, const char *arrayName, int component, int allScalars)
	These convenience members make it easy to insert closed intervals. More...

int	AddNotchIntervalSet (double xlo, double xhi, int assoc, const char *arrayName, int component, int allScalars)
	These convenience members make it easy to insert closed intervals. More...

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

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

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

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

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

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

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 vtkMultiThreshold *	SafeDownCast (vtkObjectBase *o)

static vtkMultiThreshold *	New ()

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

static vtkTypeBool	IsTypeOf (const char *type)

static vtkMultiBlockDataSetAlgorithm *	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 Types
enum	Ruling { INCONCLUSIVE =-1, INCLUDE =-2, EXCLUDE =-3 }
	When an interval is evaluated, its value is used to update a truth table. More...

typedef std::vector< Interval * >	IntervalList
	A list of pointers to IntervalSets. More...

typedef std::map< NormKey, IntervalList >	RuleMap
	A map describing the IntervalSets that share a common attribute and norm. More...

typedef std::vector< int >	TruthTreeValues

typedef std::vector< TruthTreeValues >	TruthTree

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkMultiThreshold ()

	~vtkMultiThreshold () override

int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector ) override
	This function performs the actual thresholding. More...

int	FillInputPortInformation (int port, vtkInformation *info) override
	We accept any mesh that is descended from vtkPointSet. More...

void	UpdateDependents (int id, std::set< int > &unresolvedOutputs, TruthTreeValues &setStates, vtkCellData inCellData, vtkIdType cellId, vtkGenericCell cell, std::vector< vtkUnstructuredGrid * > &outv)
	Recursively update the setStates and unresolvedOutputs vectors based on this->DependentSets. More...

int	AddIntervalSet (NormKey &nk, double xmin, double xmax, int omin, int omax)
	A utility method called by the public AddInterval members. More...

void	PrintGraph (ostream &os)
	Print out a graphviz-formatted text description of all the sets. More...

	vtkMultiThreshold (const vtkMultiThreshold &)=delete

void	operator= (const vtkMultiThreshold &)=delete

Protected Member Functions inherited from vtkMultiBlockDataSetAlgorithm
	vtkMultiBlockDataSetAlgorithm ()

	~vtkMultiBlockDataSetAlgorithm () override

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

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

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

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

vtkDataObject *	GetInput (int port)

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...

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	NextArrayIndex
	A variable used to store the next index to use when calling SetInputArrayToProcess. More...

int	NumberOfOutputs
	The number of output datasets. More...

RuleMap	IntervalRules
	A set of threshold rules sorted by the attribute+norm to which they are applied. More...

std::vector< Set * >	Sets
	A list of rules keyed by their unique integer ID. More...

TruthTree	DependentSets
	A list of boolean sets whose values depend on the given set. More...

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

Threshold cells within multiple intervals.

This filter can be substituted for a chain of several vtkThreshold filters and can also perform more sophisticated subsetting operations. It generates a vtkMultiBlockDataSet as its output. This multiblock dataset contains a vtkUnstructuredGrid for each thresholded subset you request. A thresholded subset can be a set defined by an interval over a point or cell attribute of the mesh; these subsets are called IntervalSets. A thresholded subset can also be a boolean combination of one or more IntervalSets; these subsets are called BooleanSets. BooleanSets allow complex logic since their output can depend on multiple intervals over multiple variables defined on the input mesh. This is useful because it eliminates the need for thresholding several times and then appending the results, as can be required with vtkThreshold when one wants to remove some range of values (e.g., a notch filter). Cells are not repeated when they belong to more than one interval unless those intervals have different output grids.

Another advantage this filter provides over vtkThreshold is the ability to threshold on non-scalar (i.e., vector, tensor, etc.) attributes without first computing an array containing some norm of the desired attribute. vtkMultiThreshold provides $L_1$ , $L_2$ , and $L_{\infty}$ norms.

This filter makes a distinction between intermediate subsets and subsets that will be output to a grid. Each intermediate subset you create with AddIntervalSet or AddBooleanSet is given a unique integer identifier (via the return values of these member functions). If you wish for a given set to be output, you must call OutputSet and pass it one of these identifiers. The return of OutputSet is the integer index of the output set in the multiblock dataset created by this filter.

For example, if an input mesh defined three attributes T, P, and s, one might wish to find cells that satisfy "T < 320 [K] && ( P > 101 [kPa] || s < 0.1 [kJ/kg/K] )". To accomplish this with a vtkMultiThreshold filter,

vtkMultiThreshold* thr;
int intervalSets[3];

intervalSets[0] = thr->AddIntervalSet( vtkMath::NegInf(), 320., vtkMultiThreshold::CLOSED, vtkMultiThreshold::OPEN,
    vtkDataObject::FIELD_ASSOCIATION_POINTS, "T", 0, 1 );
intervalSets[1] = thr->AddIntervalSet( 101., vtkMath::Inf(), vtkMultiThreshold::OPEN, vtkMultiThreshold::CLOSED,
    vtkDataObject::FIELD_ASSOCIATION_CELLS, "P", 0, 1 );
intervalSets[2] = thr->AddIntervalSet( vtkMath::NegInf(), 0.1, vtkMultiThreshold::CLOSED, vtkMultiThreshold::OPEN,
    vtkDataObject::FIELD_ASSOCIATION_POINTS, "s", 0, 1 );

int intermediate = thr->AddBooleanSet( vtkMultiThreshold::OR, 2, &intervalSets[1] );

int intersection[2];
intersection[0] = intervalSets[0];
intersection[1] = intermediate;
int outputSet = thr->AddBooleanSet( vtkMultiThreshold::AND, 2, intersection );

int outputGridIndex = thr->OutputSet( outputSet );
thr->Update();

The result of this filter will be a multiblock dataset that contains a single child with the desired cells. If we had also called thr->OutputSet( intervalSets[0] );, there would be two child meshes and one would contain all cells with T < 320 [K]. In that case, the output can be represented by this graph

The filled rectangles represent sets that are output.

Tests:: vtkMultiThreshold (Tests)

Definition at line 123 of file vtkMultiThreshold.h.

Member Typedef Documentation

typedef vtkMultiBlockDataSetAlgorithm vtkMultiThreshold::Superclass

Definition at line 126 of file vtkMultiThreshold.h.

typedef double(* vtkMultiThreshold::TupleNorm) (vtkDataArray *arr, vtkIdType tuple, int component)

A pointer to a function that returns a norm (or a single component) of a tuple with 1 or more components.

Definition at line 229 of file vtkMultiThreshold.h.

typedef std::vector<Interval*> vtkMultiThreshold::IntervalList

protected

A list of pointers to IntervalSets.

Definition at line 397 of file vtkMultiThreshold.h.

typedef std::map<NormKey,IntervalList> vtkMultiThreshold::RuleMap

protected

A map describing the IntervalSets that share a common attribute and norm.

Definition at line 399 of file vtkMultiThreshold.h.

typedef std::vector<int> vtkMultiThreshold::TruthTreeValues

protected

Definition at line 401 of file vtkMultiThreshold.h.

typedef std::vector<TruthTreeValues> vtkMultiThreshold::TruthTree

protected

Definition at line 402 of file vtkMultiThreshold.h.

Member Enumeration Documentation

enum vtkMultiThreshold::Closure

Whether the endpoint value of an interval should be included or excluded.

Enumerator
OPEN	Specify an open interval.
CLOSED	Specify a closed interval.

Definition at line 131 of file vtkMultiThreshold.h.

enum vtkMultiThreshold::Norm

Norms that can be used to threshold vector attributes.

Enumerator
LINFINITY_NORM	Use the $L_{\infty}$ norm for the specified array threshold.
L2_NORM	Use the norm for the specified array threshold.
L1_NORM	Use the norm for the specified array threshold.

Definition at line 136 of file vtkMultiThreshold.h.

enum vtkMultiThreshold::SetOperation

Operations that can be performed on sets to generate another set. Most of these operators take 2 or more input sets.

Enumerator
AND	Only include an element if it belongs to all the input sets.
OR	Include an element if it belongs to any input set.
XOR	Include an element if it belongs to exactly one input set.
WOR	Include elements that belong to an odd number of input sets (a kind of "winding XOR")
NAND	Only include elements that don't belong to any input set.

Definition at line 142 of file vtkMultiThreshold.h.

enum vtkMultiThreshold::Ruling

protected

When an interval is evaluated, its value is used to update a truth table.

If its value allows the output of the truth table to be determined, then either INCLUDE or EXCLUDE is returned. Otherwise, INCONCLUSIVE is returned and more intervals must be evaluated.

As an example, consider the ruleset {A>10} & ( {6<B<8} | {C==12} ). We first evaluate A. Say A is 100. This makes the first rule true, but the value of the rule set is still indeterminate. INCONCLUSIVE is returned. Next we consider B. If B is 7, then INCLUDE will be returned and there is no need to examine C. If B is 0, then INCONCLUSIVE is returned again and we must examine C. If C is 12, then INCLUDE is returned, otherwise EXCLUDE is returned.

Enumerator
INCONCLUSIVE
INCLUDE
EXCLUDE

Definition at line 366 of file vtkMultiThreshold.h.

Constructor & Destructor Documentation

vtkMultiThreshold::vtkMultiThreshold ( )

protected

vtkMultiThreshold::~vtkMultiThreshold ( )

overrideprotected

vtkMultiThreshold::vtkMultiThreshold ( const vtkMultiThreshold & )

protecteddelete

Member Function Documentation

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

static

virtual vtkTypeBool vtkMultiThreshold::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 vtkMultiBlockDataSetAlgorithm.

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

static

virtual vtkObjectBase* vtkMultiThreshold::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkMultiBlockDataSetAlgorithm.

vtkMultiThreshold* vtkMultiThreshold::NewInstance ( ) const

static vtkMultiThreshold* vtkMultiThreshold::New ( )

static

void vtkMultiThreshold::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 vtkMultiBlockDataSetAlgorithm.

int vtkMultiThreshold::AddIntervalSet	(	double	xmin,
		double	xmax,
		int	omin,
		int	omax,
		int	assoc,
		const char *	arrayName,
		int	component,
		int	allScalars
	)

Add a mesh subset to be computed by thresholding an attribute of the input mesh.

The subset can then be added to an output mesh with OutputSet() or combined with other sets using AddBooleanSet. If you wish to include all cells with values below some number a, call with xmin set to vtkMath::NegInf() and xmax set to a. Similarly, if you wish to include all cells with values above some number a, call with xmin set to a and xmax set to vtkMath::Inf(). When specifying Inf() or NegInf() for an endpoint, it does not matter whether you specify and open or closed endpoint.

When creating intervals, any integers can be used for the IDs of output meshes. All that matters is that the same ID be used if intervals should output to the same mesh. The outputs are ordered with ascending IDs in output block 0.

It is possible to specify an invalid interval, in which case these routines will return -1. Invalid intervals occur when

an array does not exist,
center is invalid,
xmin == xmax and omin and/or omax are vtkMultiThreshold::OPEN, or
xmin > xmax.
xmin or xmax is not a number (i.e., IEEE NaN). Having both xmin and xmax equal NaN is allowed. vtkMath provides a portable way to specify IEEE infinities and Nan. Note that specifying an interval completely out of the bounds of an attribute is considered valid. In fact, it is occasionally useful to create a closed interval with both endpoints set to $\infty$ or both endpoints set to $-\infty$ in order to locate cells with problematic values.

Parameters

xmin	The minimum attribute value
xmax	The maximum attribute value
omin	Whether the interval should be open or closed at xmin. Use vtkMultiThreshold::OPEN or vtkMultiThreshold::CLOSED.
omax	Whether the interval should be open or closed at xmax. Use vtkMultiThreshold::OPEN or vtkMultiThreshold::CLOSED.
assoc	One of vtkDataObject::FIELD_ASSOCIATION_CELLS or vtkDataObject::FIELD_ASSOCIATION_POINTS indicating whether a point or cell array should be used.
arrayName	The name of the array to use for thresholding
attribType	The attribute to use for thresholding. One of vtkDataSetAttributes::SCALARS, VECTORS, TENSORS, NORMALS, TCOORDS, or GLOBALIDS.
component	The number of the component to threshold on or one of the following enumerants for norms: LINFINITY_NORM, L2_NORM, L1_NORM.
allScalars	When center is vtkDataObject::FIELD_ASSOCIATION_POINTS, must all scalars be in the interval for the cell to be passed to the output, or just a single point's scalar?

Returns: An index used to identify the cells selected by the interval or -1 if the interval specification was invalid. If a valid value is returned, you may pass it to OutputSet().

int vtkMultiThreshold::AddIntervalSet	(	double	xmin,
		double	xmax,
		int	omin,
		int	omax,
		int	assoc,
		int	attribType,
		int	component,
		int	allScalars
	)

Add a mesh subset to be computed by thresholding an attribute of the input mesh.

The subset can then be added to an output mesh with OutputSet() or combined with other sets using AddBooleanSet. If you wish to include all cells with values below some number a, call with xmin set to vtkMath::NegInf() and xmax set to a. Similarly, if you wish to include all cells with values above some number a, call with xmin set to a and xmax set to vtkMath::Inf(). When specifying Inf() or NegInf() for an endpoint, it does not matter whether you specify and open or closed endpoint.

When creating intervals, any integers can be used for the IDs of output meshes. All that matters is that the same ID be used if intervals should output to the same mesh. The outputs are ordered with ascending IDs in output block 0.

It is possible to specify an invalid interval, in which case these routines will return -1. Invalid intervals occur when

an array does not exist,
center is invalid,
xmin == xmax and omin and/or omax are vtkMultiThreshold::OPEN, or
xmin > xmax.
xmin or xmax is not a number (i.e., IEEE NaN). Having both xmin and xmax equal NaN is allowed. vtkMath provides a portable way to specify IEEE infinities and Nan. Note that specifying an interval completely out of the bounds of an attribute is considered valid. In fact, it is occasionally useful to create a closed interval with both endpoints set to $\infty$ or both endpoints set to $-\infty$ in order to locate cells with problematic values.

Parameters

xmin	The minimum attribute value
xmax	The maximum attribute value
omin	Whether the interval should be open or closed at xmin. Use vtkMultiThreshold::OPEN or vtkMultiThreshold::CLOSED.
omax	Whether the interval should be open or closed at xmax. Use vtkMultiThreshold::OPEN or vtkMultiThreshold::CLOSED.
assoc	One of vtkDataObject::FIELD_ASSOCIATION_CELLS or vtkDataObject::FIELD_ASSOCIATION_POINTS indicating whether a point or cell array should be used.
arrayName	The name of the array to use for thresholding
attribType	The attribute to use for thresholding. One of vtkDataSetAttributes::SCALARS, VECTORS, TENSORS, NORMALS, TCOORDS, or GLOBALIDS.
component	The number of the component to threshold on or one of the following enumerants for norms: LINFINITY_NORM, L2_NORM, L1_NORM.
allScalars	When center is vtkDataObject::FIELD_ASSOCIATION_POINTS, must all scalars be in the interval for the cell to be passed to the output, or just a single point's scalar?

Returns: An index used to identify the cells selected by the interval or -1 if the interval specification was invalid. If a valid value is returned, you may pass it to OutputSet().

int vtkMultiThreshold::AddLowpassIntervalSet	(	double	xmax,
		int	assoc,
		const char *	arrayName,
		int	component,
		int	allScalars
	)

inline

These convenience members make it easy to insert closed intervals.

The "notch" interval is accomplished by creating a bandpass interval and applying a NAND operation. In this case, the set ID returned in the NAND operation set ID. Note that you can pass xmin == xmax when creating a bandpass threshold to retrieve elements matching exactly one value (since the intervals created by these routines are closed).

Definition at line 444 of file vtkMultiThreshold.h.

int vtkMultiThreshold::AddHighpassIntervalSet	(	double	xmin,
		int	assoc,
		const char *	arrayName,
		int	component,
		int	allScalars
	)

inline

These convenience members make it easy to insert closed intervals.

The "notch" interval is accomplished by creating a bandpass interval and applying a NAND operation. In this case, the set ID returned in the NAND operation set ID. Note that you can pass xmin == xmax when creating a bandpass threshold to retrieve elements matching exactly one value (since the intervals created by these routines are closed).

Definition at line 449 of file vtkMultiThreshold.h.

int vtkMultiThreshold::AddBandpassIntervalSet	(	double	xmin,
		double	xmax,
		int	assoc,
		const char *	arrayName,
		int	component,
		int	allScalars
	)

inline

These convenience members make it easy to insert closed intervals.

The "notch" interval is accomplished by creating a bandpass interval and applying a NAND operation. In this case, the set ID returned in the NAND operation set ID. Note that you can pass xmin == xmax when creating a bandpass threshold to retrieve elements matching exactly one value (since the intervals created by these routines are closed).

Definition at line 454 of file vtkMultiThreshold.h.

int vtkMultiThreshold::AddNotchIntervalSet	(	double	xlo,
		double	xhi,
		int	assoc,
		const char *	arrayName,
		int	component,
		int	allScalars
	)

inline

These convenience members make it easy to insert closed intervals.

The "notch" interval is accomplished by creating a bandpass interval and applying a NAND operation. In this case, the set ID returned in the NAND operation set ID. Note that you can pass xmin == xmax when creating a bandpass threshold to retrieve elements matching exactly one value (since the intervals created by these routines are closed).

Definition at line 460 of file vtkMultiThreshold.h.

int vtkMultiThreshold::AddBooleanSet	(	int	operation,
		int	numInputs,
		int *	inputs
	)

Create a new mesh subset using boolean operations on pre-existing sets.

int vtkMultiThreshold::OutputSet ( int setId )

Create an output mesh containing a boolean or interval subset of the input mesh.

void vtkMultiThreshold::Reset ( )

Remove all the intervals currently defined.

int vtkMultiThreshold::RequestData	(	vtkInformation *	,
		vtkInformationVector **	,
		vtkInformationVector *
	)

overrideprotectedvirtual

This function performs the actual thresholding.

Reimplemented from vtkMultiBlockDataSetAlgorithm.

int vtkMultiThreshold::FillInputPortInformation	(	int	port,
		vtkInformation *	info
	)

overrideprotectedvirtual

We accept any mesh that is descended from vtkPointSet.

In the future, it is possible to accept more types but this would require us to generate a new vtkPoints object for each output mesh.

Reimplemented from vtkMultiBlockDataSetAlgorithm.

void vtkMultiThreshold::UpdateDependents	(	int	id,
		std::set< int > &	unresolvedOutputs,
		TruthTreeValues &	setStates,
		vtkCellData *	inCellData,
		vtkIdType	cellId,
		vtkGenericCell *	cell,
		std::vector< vtkUnstructuredGrid * > &	outv
	)

protected

Recursively update the setStates and unresolvedOutputs vectors based on this->DependentSets.

int vtkMultiThreshold::AddIntervalSet	(	NormKey &	nk,
		double	xmin,
		double	xmax,
		int	omin,
		int	omax
	)

protected

A utility method called by the public AddInterval members.

void vtkMultiThreshold::PrintGraph ( ostream & os )

protected

Print out a graphviz-formatted text description of all the sets.

void vtkMultiThreshold::operator= ( const vtkMultiThreshold & )

protecteddelete

Member Data Documentation

int vtkMultiThreshold::NextArrayIndex

protected

A variable used to store the next index to use when calling SetInputArrayToProcess.

Its value is stored in an interval's ArrayIndex member and used during RequestData to retrieve a pointer to the actual array.

Definition at line 389 of file vtkMultiThreshold.h.

int vtkMultiThreshold::NumberOfOutputs

protected

The number of output datasets.

Definition at line 394 of file vtkMultiThreshold.h.

RuleMap vtkMultiThreshold::IntervalRules

protected

A set of threshold rules sorted by the attribute+norm to which they are applied.

Definition at line 407 of file vtkMultiThreshold.h.

std::vector<Set*> vtkMultiThreshold::Sets

protected

A list of rules keyed by their unique integer ID.

This list is used to quickly determine whether interval membership implies membership in a given output mesh.

Definition at line 413 of file vtkMultiThreshold.h.

TruthTree vtkMultiThreshold::DependentSets

protected

A list of boolean sets whose values depend on the given set.

Each time an interval is evaluated for a cell, the list of dependent boolean sets contained here is updated. Any boolean operations whose truth values are decided are then marked and their dependent sets are examined.

Definition at line 421 of file vtkMultiThreshold.h.

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

/home/demarle/Source/VTK/release/8.2/build/Utilities/Doxygen/dox/Filters/General/vtkMultiThreshold.h

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation