Class to combine histograms of mean with error on mean. More...

#include <HistogramAccumulatorMerge.hh>

Inheritance diagram for HistogramAccumulatorMerge:

Collaboration diagram for HistogramAccumulatorMerge:

Public Member Functions
	HistogramAccumulatorMerge ()
	Default constructor only for ROOT reflexivity - not intended for use.

	HistogramAccumulatorMerge (TH1 *baseHistogram, int nDimensionsIn, const std::string &resultHistName, const std::string &resultHistTitle)
	Constructor simply passes down to base class.

virtual void	Accumulate (TH1 *newValue)

Public Member Functions inherited from HistogramAccumulator
	HistogramAccumulator ()
	Default constructor only for ROOT reflexivity - not intended for use.

	HistogramAccumulator (TH1 *baseHistogram, const std::string &resultHistNameIn, const std::string &resultHistTitleIn)

	HistogramAccumulator (TH1 *baseHistogram, int nDimensionsIn, const std::string &resultHistName, const std::string &resultHistTitle)

virtual	~HistogramAccumulator ()

virtual void	Accumulate (TH1 *newValue)

virtual TH1 *	Terminate ()

TH1 *	Result () const
	Accessor.

void	AddNEmptyEntries (unsigned long i)

unsigned long	N () const
	Access currently accumulated number of entries.

Protected Member Functions
virtual void	AccumulateSingleValue (double oldMean, double oldVari, double x, double xVari, unsigned long nEntriesAccumulated, unsigned long nEntriesToAccumulate, double &newMean, double &newVari) const

	ClassDef (HistogramAccumulatorMerge, 1)

Protected Member Functions inherited from HistogramAccumulator
virtual void	AccumulateSingleValue (double oldMean, double oldVari, double x, double xVari, unsigned long nEntriesAccumulated, unsigned long nEntriesToAccumulate, double &newMean, double &newVari) const

	ClassDef (HistogramAccumulator, 1)

Additional Inherited Members
Protected Attributes inherited from HistogramAccumulator
int	nDimensions
	Number of dimensions.

unsigned long	n
	Counter.

bool	terminated
	Whether this instance has been finished.

const std::string	resultHistName
	Name for resultant histogram.

const std::string	resultHistTitle
	Title for resultant histogram.

TH1 *	mean

TH1 *	variance

TH1 *	result

Detailed Description

Class to combine histograms of mean with error on mean.

This uses the functionality of HistogramAccumulator to accumulate a combined mean and error on the mean from histograms already containing means and error the mean. i.e. The incoming histograms have already averaged many (at least 2) events.

This overrides two methods for the accumulation but the inheritance saves on repetition in the constructor and structures.

Author: Laurie Nevay

Definition at line 44 of file HistogramAccumulatorMerge.hh.

Constructor & Destructor Documentation

◆ HistogramAccumulatorMerge()

HistogramAccumulatorMerge::HistogramAccumulatorMerge	(	TH1 *	baseHistogram,
		int	nDimensionsIn,
		const std::string &	resultHistName,
		const std::string &	resultHistTitle
	)

Constructor simply passes down to base class.

Definition at line 37 of file HistogramAccumulatorMerge.cc.

◆ ~HistogramAccumulatorMerge()

virtual HistogramAccumulatorMerge::~HistogramAccumulatorMerge ( )

inlinevirtual

Definition at line 56 of file HistogramAccumulatorMerge.hh.

Member Function Documentation

◆ Accumulate()

void HistogramAccumulatorMerge::Accumulate ( TH1 * newValue )

virtual

This method must be overridden as the information passed to the AccumualteSingleValue is different.

Reimplemented from HistogramAccumulator.

Definition at line 47 of file HistogramAccumulatorMerge.cc.

References AccumulateSingleValue(), HistogramAccumulator::n, and HistogramAccumulator::nDimensions.

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◆ AccumulateSingleValue()

void HistogramAccumulatorMerge::AccumulateSingleValue	(	double	oldMean,
		double	oldVari,
		double	x,
		double	xVari,
		unsigned long	nEntriesAccumulated,
		unsigned long	nEntriesToAccumulate,
		double &	newMean,
		double &	newVari
	)		const

protectedvirtual

This implements a different method from the base class that is used to combine means and variances from different samples of the same underlying experiment / data.

Reimplemented from HistogramAccumulator.

Definition at line 189 of file HistogramAccumulatorMerge.cc.

Referenced by Accumulate().

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

/Users/lnevay/physics/reps/bdsim/analysis/HistogramAccumulatorMerge.hh
/Users/lnevay/physics/reps/bdsim/analysis/HistogramAccumulatorMerge.cc

Public Member Functions

Protected Member Functions