Meerkat is hosted by Hepforge, IPPP Durham
Meerkat  v1r3
Multidimensional kernel density estimation package
HistogramDensity Class Reference

#include <HistogramDensity.hh>

Inheritance diagram for HistogramDensity:
AbsDensity

Public Member Functions

 HistogramDensity (const char *pdfName, AbsPhaseSpace *thePhaseSpace, TH1 *Histogram)
 Constructor. More...
 
virtual ~HistogramDensity ()
 
Double_t density (std::vector< Double_t > &x)
 Calculate PDF value at the given point. More...
 
AbsPhaseSpacephaseSpace ()
 Return phase space definition for this PDF. More...
 
- Public Member Functions inherited from AbsDensity
 AbsDensity (const char *pdfName)
 Constructor. More...
 
virtual ~AbsDensity ()
 Destructor. More...
 
void slice (std::vector< Double_t > &x, UInt_t num, TH1F *hist)
 Calculate 1D slice of the PDF. More...
 
void slice (std::vector< Double_t > &x, UInt_t numx, UInt_t numy, TH2F *hist, Bool_t inPhaseSpace=true)
 Calculate 2D slice of the PDF. More...
 
double transform (TH1F *hist1, TH1F *hist2, double x)
 
void project (TH1F *hist)
 Calculate projection of the 1D PDF. More...
 
void project (TH2F *hist, Bool_t inPhaseSpace=true)
 Calculate projection of the 2D PDF. More...
 
void setMajorant (Double_t majorant)
 Set majorant for accept-reject method. More...
 
void setMaxTries (UInt_t maxTries)
 Set maximum number of tries for accept-reject method. More...
 
Double_t generate (std::vector< Double_t > &x)
 Generate a single point within the phase space according to the PDF using accept-reject method. More...
 
void generate (TNtuple *tree, UInt_t numEvents)
 Generate a sample of points within the phase space according to the PDF using accept-reject method. More...
 
const char * name (void)
 Return the name of the PDF. More...
 
void setSeed (UInt_t seed=0)
 Set random seed. More...
 

Private Attributes

AbsPhaseSpacem_phaseSpace
 Reference to phase space. More...
 
TH1 * m_hist
 ROOT Histogram. More...
 
UInt_t m_dim
 Cached dimensionality of the phase space. More...
 

Additional Inherited Members

- Protected Attributes inherited from AbsDensity
char m_name [256]
 PDF name. More...
 
Double_t m_majorant
 PDF majorant (maximum PDF value needed for accept-reject). More...
 
UInt_t m_maxTries
 Maximum number of tries for accept-reject method. More...
 
TRandom3 m_rnd
 Random number generator. More...
 

Detailed Description

Class that describes the density defined by ROOT Histogram The phase space dimensionality must not exceed four

Definition at line 14 of file HistogramDensity.hh.

Constructor & Destructor Documentation

HistogramDensity::HistogramDensity ( const char *  pdfName,
AbsPhaseSpace thePhaseSpace,
TH1 *  Histogram 
)

Constructor.

Parameters
[in]pdfNamePDF name
[in]thePhaseSpacephase space definition
[in]HistogramROOT THistogram object

Definition at line 12 of file HistogramDensity.cpp.

HistogramDensity::~HistogramDensity ( )
virtual

Definition at line 26 of file HistogramDensity.cpp.

Member Function Documentation

Double_t HistogramDensity::density ( std::vector< Double_t > &  x)
virtual

Calculate PDF value at the given point.

Parameters
[in]xthe point at which to calculate the PDF
Returns
PDF value (equals 1 inside phase space, 0 outside it)

Implements AbsDensity.

Definition at line 30 of file HistogramDensity.cpp.

AbsPhaseSpace* HistogramDensity::phaseSpace ( )
inlinevirtual

Return phase space definition for this PDF.

Returns
PDF phase space

Implements AbsDensity.

Definition at line 41 of file HistogramDensity.hh.

Member Data Documentation

UInt_t HistogramDensity::m_dim
private

Cached dimensionality of the phase space.

Definition at line 52 of file HistogramDensity.hh.

TH1* HistogramDensity::m_hist
private

ROOT Histogram.

Definition at line 49 of file HistogramDensity.hh.

AbsPhaseSpace* HistogramDensity::m_phaseSpace
private

Reference to phase space.

Definition at line 46 of file HistogramDensity.hh.


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