PIDPriors Class Reference

A database class to hold the prior probability for the particle identification. More...

#include <PIDPriors.h>

Inheritance diagram for PIDPriors:

Public Member Functions
	PIDPriors ()
	Default constructor.
void	setPriors (const Const::ChargedStable &particle, const PIDPriorsTable &table)
	Sets the prior table for a particle species from a PIDPriorsTable object.
void	setPriors (const Const::ChargedStable &particle, std::vector< float > xAxisEdges, std::vector< float > yAxisEdges, std::vector< float > priorsTable, std::vector< float > errorsTable)
	Sets the prior table for a particle species from the std::vectors of the bin edges and the probability values.
void	setPriors (const Const::ChargedStable &particle, TH2F *priorHistogram)
	Sets the prior table for a particle species from a TH2F.
void	setPriors (const Const::ChargedStable &particle, TH2F *counts, TH2F *normalization)
	Sets the prior table for a particle species starting from a TH2F of the counts and a TH2F of the normalization.
void	setPriorsAxes (const Const::ChargedStable &particle, std::vector< float > xAxisEdges, std::vector< float > yAxisEdges)
	Sets the axes for the priors table of the selected species.
void	setPriorsTable (const Const::ChargedStable &particle, std::vector< float > priorsTable)
	Sets the probability table for the priors of the selected particle species.
void	setErrorsTable (const Const::ChargedStable &particle, std::vector< float > errorsTable)
	Sets the probability error table for the priors of the selected particle species.
void	setAxisLabels (const Const::ChargedStable &particle, std::string xAxisLabel, std::string yAxisLabel)
	Sets the axis labels for the priors of the selected particle species.
PIDPriorsTable	getPriorsTable (const Const::ChargedStable &particle) const
	Returns the priors table of the selected particle species.
float	getPriorValue (const Const::ChargedStable &particle, float x, float y) const
	Returns the prior probability associated to a particle with defined species and parameters.
float	getPriorError (const Const::ChargedStable &particle, float x, float y) const
	Returns the error on the prior probability associated to a particle with defined species and parameters.
std::string	getXAxisLabel (const Const::ChargedStable &particle) const
	Returns the X axis label of the prior.
std::string	getYAxisLabel (const Const::ChargedStable &particle) const
	Returns the Y axis label of the prior.

Private Member Functions
	ClassDef (PIDPriors, 1)
	Class revision number.

Private Attributes
PIDPriorsTable	m_priors [Const::ChargedStable::c_SetSize]
	The array of PIDPiorsTable, one per particle species.

Detailed Description

A database class to hold the prior probability for the particle identification.

This prior probability for each particle species is stored as PIDPriorsTable object, that allows to bin it in 2 dimensions defined by two kinematic variables. This class provides a container for 6 PIDPriorsTable objects, some wrappers around the most used getters and setters, and some setters that allow the user to load the priors starting from a TH2 object.

Definition at line 31 of file PIDPriors.h.

Constructor & Destructor Documentation

PIDPriors()

PIDPriors ( )

inline

Default constructor.

Definition at line 44 of file PIDPriors.h.

{};

Member Function Documentation

getPriorError()

float getPriorError ( const Const::ChargedStable &  particle, float  x, float  y  ) const

inline

Returns the error on the prior probability associated to a particle with defined species and parameters.

Parameters

particle	the charged stable type of the prior's species
x	the value of the x-axis coordinate
y	the value of the y-axis coordinate

Returns

the prior probability error

Definition at line 191 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      return m_priors[index].getErrorValue(x, y);
    }

getPriorsTable()

PIDPriorsTable getPriorsTable ( const Const::ChargedStable &  particle ) const

inline

Returns the priors table of the selected particle species.

Parameters

particle

the charged stable type of the prior's species

Returns

the priors table

Definition at line 163 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      return m_priors[index];
    }

getPriorValue()

float getPriorValue ( const Const::ChargedStable &  particle, float  x, float  y  ) const

inline

Returns the prior probability associated to a particle with defined species and parameters.

Parameters

particle	the charged stable type of the prior's species
x	the value of the x-axis coordinate
y	the value of the y-axis coordinate

Returns

the prior probability value

Definition at line 177 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      return m_priors[index].getPriorValue(x, y);
    }

getXAxisLabel()

std::string getXAxisLabel ( const Const::ChargedStable &  particle ) const

inline

Returns the X axis label of the prior.

Parameters

particle

the charged stable type of the prior's species

Returns

the X axis label for the prior table of the selected particle species

Definition at line 203 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      return m_priors[index].getXAxisLabel();
    }

getYAxisLabel()

std::string getYAxisLabel ( const Const::ChargedStable &  particle ) const

inline

Returns the Y axis label of the prior.

Parameters

particle

the charged stable type of the prior's species

Returns

the Y axis label for the prior table of the selected particle species

Definition at line 215 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      return m_priors[index].getYAxisLabel();
    }

setAxisLabels()

void setAxisLabels ( const Const::ChargedStable &  particle, std::string  xAxisLabel, std::string  yAxisLabel  )

inline

Sets the axis labels for the priors of the selected particle species.

Parameters

particle	the charged stable type of the prior's species
xAxisLabel	the label of the X axis
yAxisLabel	the label of the Y axis

Definition at line 150 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index].setAxisLabels(xAxisLabel, yAxisLabel);
      return;
    }

setErrorsTable()

void setErrorsTable ( const Const::ChargedStable &  particle, std::vector< float >  errorsTable  )

inline

Sets the probability error table for the priors of the selected particle species.

Effectively this is just a wrapper around PIDPriorsTable::setErrorssTable()

Parameters

particle	the charged stable type of the prior's species
errorsTable	a 2D vector containing the prior probabilities

Definition at line 136 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index].setErrorsTable(errorsTable);
      return;
    }

setPriors() [1/4]

void setPriors ( const Const::ChargedStable &  particle, const PIDPriorsTable &  table  )

inline

Sets the prior table for a particle species from a PIDPriorsTable object.

Parameters

particle	the charged stable type of the particle
table	the priors table

Definition at line 52 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index] = table;
      return;
    }

setPriors() [2/4]

void setPriors ( const Const::ChargedStable &  particle, std::vector< float >  xAxisEdges, std::vector< float >  yAxisEdges, std::vector< float >  priorsTable, std::vector< float >  errorsTable  )

inline

Sets the prior table for a particle species from the std::vectors of the bin edges and the probability values.

Parameters

particle	the charged stable type of the particle
xAxisEdges	the std::vector<float> containing the bin edges of the X axis
yAxisEdges	the std::vector<float> containing the bin edges of the Y axis
priorsTable	the 2D std::vector<float> containing the prior probabilities
errorsTable	the 2D std::vector<float> containing the errors on prior probabilities

Definition at line 68 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index].setBinEdges(xAxisEdges, yAxisEdges);
      m_priors[index].setBinEdges(xAxisEdges, yAxisEdges);
      m_priors[index].setPriorsTable(priorsTable);
      m_priors[index].setErrorsTable(errorsTable);
      return;
    }

setPriors() [3/4]

void setPriors	(	const Const::ChargedStable &	particle,
		TH2F *	counts,
		TH2F *	normalization
	)

Sets the prior table for a particle species starting from a TH2F of the counts and a TH2F of the normalization.

The counts histogram is divided by the normalization one to get the probabilities and the errors The bin edges are taken form the TH2 axes, the prior probability from the bins content and the errors from the bins error

Parameters

particle	the charged stable type of the particle
counts	histogram of counts
normalization	histogram used for normalization

Definition at line 57 of file PIDPriors.cc.

{
  TH2F* priorHistogram = static_cast<TH2F*>(counts->Clone());
 
  priorHistogram->Sumw2();
  priorHistogram->Divide(normalization);
 
  setPriors(particle, priorHistogram);
};

setPriors() [4/4]

void setPriors	(	const Const::ChargedStable &	particle,
		TH2F *	priorHistogram
	)

Sets the prior table for a particle species from a TH2F.

The bin edges are taken form the TH2 axes, the prior probability from the bins content and the errors from the bins error

Parameters

particle	the charged stable type of the particle
priorHistogram	the prior for the particle specie

Definition at line 18 of file PIDPriors.cc.

{
  auto index = particle.getIndex();
 
  std::vector<float> xEdges;
  std::vector<float> yEdges;
 
  auto& xaxis = *(priorHistogram->GetXaxis());
  for (int i = xaxis.GetFirst(); i <= xaxis.GetLast(); ++i) {
    xEdges.push_back(xaxis.GetBinLowEdge(i));
  }
  xEdges.push_back(xaxis.GetBinUpEdge(xaxis.GetLast()));
 
  auto& yaxis = *(priorHistogram->GetYaxis());
  for (int i = yaxis.GetFirst(); i <= yaxis.GetLast(); ++i) {
    yEdges.push_back(yaxis.GetBinLowEdge(i));
  }
  yEdges.push_back(yaxis.GetBinUpEdge(yaxis.GetLast()));
 
 
  std::vector<float>  prior;
  std::vector<float>  error;
 
  for (int ix = 0; ix < (int)xEdges.size() - 1; ix++) {
    for (int iy = 0; iy < (int)yEdges.size() - 1; iy++) {
      prior.push_back(priorHistogram->GetBinContent(ix + 1, iy + 1));
      error.push_back(priorHistogram->GetBinError(ix + 1, iy + 1));
    }
  }
 
  m_priors[index].setBinEdges(xEdges, yEdges);
  m_priors[index].setPriorsTable(prior);
  m_priors[index].setErrorsTable(error);
 
  return;
};

setPriorsAxes()

void setPriorsAxes ( const Const::ChargedStable &  particle, std::vector< float >  xAxisEdges, std::vector< float >  yAxisEdges  )

inline

Sets the axes for the priors table of the selected species.

Effectively this is just a wrapper around PIDPriorsTable::setBinEdges()

Parameters

particle	the charged stable type of the prior's species
xAxisEdges	the vector of edges of the X axis
yAxisEdges	the vector of edges of the Y axis

Definition at line 107 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index].setBinEdges(xAxisEdges, yAxisEdges);
      m_priors[index].setBinEdges(xAxisEdges, yAxisEdges);
      return;
    }

setPriorsTable()

void setPriorsTable ( const Const::ChargedStable &  particle, std::vector< float >  priorsTable  )

inline

Sets the probability table for the priors of the selected particle species.

Effectively this is just a wrapper around PIDPriorsTable::setPriorsTable()

Parameters

particle	the charged stable type of the prior's species
priorsTable	a 2D vector containing the prior probabilities

Definition at line 122 of file PIDPriors.h.

    {
      auto index = particle.getIndex();
      m_priors[index].setPriorsTable(priorsTable);
      return;
    }

Member Data Documentation

m_priors

PIDPriorsTable m_priors[Const::ChargedStable::c_SetSize]

private

The array of PIDPiorsTable, one per particle species.

Definition at line 222 of file PIDPriors.h.

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

• analysis/dbobjects/include/PIDPriors.h
• analysis/dbobjects/src/PIDPriors.cc