measure distance from k-means cluster centers using a user-specified expression
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| virtual vtkTypeBool | IsA (const char *type) |
| | Return 1 if this class is the same type of (or a subclass of) the named class.
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| vtkKMeansDistanceFunctorCalculator * | NewInstance () const |
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| void | PrintSelf (ostream &os, vtkIndent indent) override |
| | Methods invoked by print to print information about the object including superclasses.
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| void | operator() (double &, vtkVariantArray *, vtkVariantArray *) override |
| | Compute the distance from one observation to another, returning the distance in the first argument.
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| virtual void | SetDistanceExpression (const char *) |
| | Set/get the distance function expression.
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| virtual char * | GetDistanceExpression () |
| | Set/get the distance function expression.
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| virtual void | SetFunctionParser (vtkFunctionParser *) |
| | Set/get the string containing an expression which evaluates to the distance metric used for k-means computation.
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| virtual vtkFunctionParser * | GetFunctionParser () |
| | Set/get the string containing an expression which evaluates to the distance metric used for k-means computation.
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| virtual vtkTypeBool | IsA (const char *type) |
| | Return 1 if this class is the same type of (or a subclass of) the named class.
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| vtkKMeansDistanceFunctor * | NewInstance () const |
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| void | PrintSelf (ostream &os, vtkIndent indent) override |
| | Methods invoked by print to print information about the object including superclasses.
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| virtual vtkVariantArray * | GetEmptyTuple (vtkIdType dimension) |
| | Return an empty tuple.
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| virtual void | operator() (double &, vtkVariantArray *, vtkVariantArray *) |
| | Compute the distance from one observation to another, returning the distance in the first argument.
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| virtual void | PairwiseUpdate (vtkTable *clusterCenters, vtkIdType row, vtkVariantArray *data, vtkIdType dataCardinality, vtkIdType totalCardinality) |
| | This is called once per observation per run per iteration in order to assign the observation to its nearest cluster center after the distance functor has been evaluated for all the cluster centers.
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| virtual void | PerturbElement (vtkTable *, vtkTable *, vtkIdType, vtkIdType, vtkIdType, double) |
| | When a cluster center (1) has no observations that are closer to it than other cluster centers or (2) has exactly the same coordinates as another cluster center, its coordinates should be perturbed.
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| virtual void * | AllocateElementArray (vtkIdType size) |
| | Allocate an array large enough to hold size coordinates and return a void pointer to this array.
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| virtual void | DeallocateElementArray (void *) |
| | Free an array allocated with AllocateElementArray.
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| virtual vtkAbstractArray * | CreateCoordinateArray () |
| | Return a vtkAbstractArray capable of holding cluster center coordinates.
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| virtual void | PackElements (vtkTable *curTable, void *vElements) |
| | Pack the cluster center coordinates in vElements into columns of curTable.
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| virtual int | GetDataType () |
| | Return the data type used to store cluster center coordinates.
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| virtual void | UnPackElements (vtkTable *curTable, vtkTable *newTable, void *vLocalElements, void *vGlobalElements, int np) |
| | Unpack the cluster center coordinates in vElements into columns of curTable.
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| virtual void | UnPackElements (vtkTable *curTable, void *vLocalElements, vtkIdType numRows, vtkIdType numCols) |
| | Unpack the cluster center coordinates in vElements into columns of curTable.
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| | vtkBaseTypeMacro (vtkObject, vtkObjectBase) |
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| virtual void | DebugOn () |
| | Turn debugging output on.
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| virtual void | DebugOff () |
| | Turn debugging output off.
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| bool | GetDebug () |
| | Get the value of the debug flag.
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| void | SetDebug (bool debugFlag) |
| | Set the value of the debug flag.
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| virtual void | Modified () |
| | Update the modification time for this object.
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| virtual vtkMTimeType | GetMTime () |
| | Return this object's modified time.
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| void | PrintSelf (ostream &os, vtkIndent indent) override |
| | Methods invoked by print to print information about the object including superclasses.
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| void | RemoveObserver (unsigned long tag) |
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| void | RemoveObservers (unsigned long event) |
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| void | RemoveObservers (const char *event) |
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| void | RemoveAllObservers () |
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| vtkTypeBool | HasObserver (unsigned long event) |
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| vtkTypeBool | HasObserver (const char *event) |
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| int | InvokeEvent (unsigned long event) |
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| int | InvokeEvent (const char *event) |
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| unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| vtkCommand * | GetCommand (unsigned long tag) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| void | RemoveObserver (vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| void | RemoveObservers (unsigned long event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| void | RemoveObservers (const char *event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
| | Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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| 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.
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| 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.
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| 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.
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| int | InvokeEvent (unsigned long event, void *callData) |
| | This method invokes an event and return whether the event was aborted or not.
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| int | InvokeEvent (const char *event, void *callData) |
| | This method invokes an event and return whether the event was aborted or not.
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| const char * | GetClassName () const |
| | Return the class name as a string.
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| virtual vtkTypeBool | IsA (const char *name) |
| | Return 1 if this class is the same type of (or a subclass of) the named class.
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| virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name) |
| | Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
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| virtual void | Delete () |
| | Delete a VTK object.
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| virtual void | FastDelete () |
| | Delete a reference to this object.
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| void | InitializeObjectBase () |
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| void | Print (ostream &os) |
| | Print an object to an ostream.
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| virtual void | Register (vtkObjectBase *o) |
| | Increase the reference count (mark as used by another object).
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| virtual void | UnRegister (vtkObjectBase *o) |
| | Decrease the reference count (release by another object).
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| int | GetReferenceCount () |
| | Return the current reference count of this object.
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| void | SetReferenceCount (int) |
| | Sets the reference count.
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| bool | GetIsInMemkind () const |
| | A local state flag that remembers whether this object lives in the normal or extended memory space.
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| virtual void | PrintHeader (ostream &os, vtkIndent indent) |
| | Methods invoked by print to print information about the object including superclasses.
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| virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
| | Methods invoked by print to print information about the object including superclasses.
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| static vtkKMeansDistanceFunctorCalculator * | New () |
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| static vtkTypeBool | IsTypeOf (const char *type) |
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| static vtkKMeansDistanceFunctorCalculator * | SafeDownCast (vtkObjectBase *o) |
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| static vtkKMeansDistanceFunctor * | New () |
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| static vtkTypeBool | IsTypeOf (const char *type) |
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| static vtkKMeansDistanceFunctor * | SafeDownCast (vtkObjectBase *o) |
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| static vtkObject * | New () |
| | Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
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| static void | BreakOnError () |
| | This method is called when vtkErrorMacro executes.
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| static void | SetGlobalWarningDisplay (int val) |
| | This is a global flag that controls whether any debug, warning or error messages are displayed.
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| static void | GlobalWarningDisplayOn () |
| | This is a global flag that controls whether any debug, warning or error messages are displayed.
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| static void | GlobalWarningDisplayOff () |
| | This is a global flag that controls whether any debug, warning or error messages are displayed.
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| static int | GetGlobalWarningDisplay () |
| | This is a global flag that controls whether any debug, warning or error messages are displayed.
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| static vtkTypeBool | IsTypeOf (const char *name) |
| | Return 1 if this class type is the same type of (or a subclass of) the named class.
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| static vtkIdType | GetNumberOfGenerationsFromBaseType (const char *name) |
| | Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
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| static vtkObjectBase * | New () |
| | Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
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| static void | SetMemkindDirectory (const char *directoryname) |
| | The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.
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| static bool | GetUsingMemkind () |
| | A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.
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measure distance from k-means cluster centers using a user-specified expression
This is a subclass of the default k-means distance functor that allows the user to specify a distance function as a string. The provided expression is evaluated whenever the parenthesis operator is invoked but this is much slower than the default distance calculation.
User-specified distance expressions should be written in terms of two vector variables named "x" and "y". The length of the vectors will be determined by the k-means request and all columns of interest in the request must contain values that may be converted to a floating point representation. (Strings and vtkObject pointers are not allowed.) An example distance expression is "sqrt( (x0-y0)^2 + (x1-y1)^2 )" which computes Euclidian distance in a plane defined by the first 2 coordinates of the vectors specified.
Definition at line 30 of file vtkKMeansDistanceFunctorCalculator.h.
Public Types inherited from vtkKMeansDistanceFunctor
1.9.6