/usr/include/vtk-5.8/vtkKMeansDistanceFunctorCalculator.h is in libvtk5-dev 5.8.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #ifndef __vtkKMeansDistanceFunctorCalculator_h
#define __vtkKMeansDistanceFunctorCalculator_h
// .NAME vtkKMeansDistanceFunctorCalculator - measure distance from k-means cluster centers using a user-specified expression
// .SECTION Description
// 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.
#include "vtkKMeansDistanceFunctor.h"
class vtkFunctionParser;
class vtkDoubleArray;
class VTK_INFOVIS_EXPORT vtkKMeansDistanceFunctorCalculator : public vtkKMeansDistanceFunctor
{
public:
static vtkKMeansDistanceFunctorCalculator* New();
vtkTypeMacro(vtkKMeansDistanceFunctorCalculator,vtkKMeansDistanceFunctor);
virtual void PrintSelf( ostream& os, vtkIndent indent );
// Description:
// Compute the distance from one observation to another, returning the distance
// in the first argument.
virtual void operator() ( double&, vtkVariantArray*, vtkVariantArray * );
// Description:
// Set/get the distance function expression.
vtkSetStringMacro(DistanceExpression);
vtkGetStringMacro(DistanceExpression);
// Description:
// Set/get the string containing an expression which evaluates to the
// distance metric used for k-means computation. The scalar variables
// "x0", "x1", ... "xn" and "y0", "y1", ..., "yn" refer to the coordinates
// involved in the computation.
virtual void SetFunctionParser( vtkFunctionParser* );
vtkGetObjectMacro(FunctionParser,vtkFunctionParser);
protected:
vtkKMeansDistanceFunctorCalculator();
virtual ~vtkKMeansDistanceFunctorCalculator();
char* DistanceExpression;
int TupleSize;
vtkFunctionParser* FunctionParser;
private:
vtkKMeansDistanceFunctorCalculator( const vtkKMeansDistanceFunctorCalculator& ); // Not implemented.
void operator = ( const vtkKMeansDistanceFunctorCalculator& ); // Not implemented.
};
#endif // __vtkKMeansDistanceFunctorCalculator_h
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