Gaudi::Histogram2D Class Reference

#include </builds/gaudi/Gaudi/GaudiCommonSvc/include/GaudiCommonSvc/H2D.h>

Inheritance diagram for Gaudi::Histogram2D:

Collaboration diagram for Gaudi::Histogram2D:

Public Member Functions
	Histogram2D ()
	Standard Constructor. More...
	Histogram2D (TH2D *rep)
	Standard initializing Constructor with TH2D representation to be adopted. More...
bool	fill (double x, double y, double weight=1.) override
	Fill the Histogram2D with a value and the. More...
virtual bool	setBinContents (int binIndexX, int binIndexY, int entries, double height, double error, double centreX, double centreY)
	Fast filling method for a given bin. It can be also the over/underflow bin. More...
bool	setRms (double rmsX, double rmsY)
	Sets the rms of the histogram. More...
bool	reset () override
void	copyFromAida (const AIDA::IHistogram2D &h)
	Create new histogram from any AIDA based histogram. More...
const CLID &	clID () const override
	Retrieve reference to class defininition identifier. More...
Public Member Functions inherited from DataObject
	DataObject ()
	Standard Constructor. More...
	DataObject (const DataObject &rhs)
	Copy Constructor. More...
DataObject &	operator= (const DataObject &rhs)
	Assignment Operator. More...
	DataObject (DataObject &&rhs)
	Move Constructor. More...
DataObject &	operator= (DataObject &&rhs)
	Move Assignment Operator. More...
virtual	~DataObject ()
	Standard Destructor. More...
virtual unsigned long	addRef ()
	Add reference to object. More...
virtual unsigned long	release ()
	release reference to object More...
const std::string &	name () const
	Retreive DataObject name. It is the name when registered in the store. More...
virtual StatusCode	update ()
	Provide empty placeholder for internal object reconfiguration callback. More...
void	setRegistry (IRegistry *pRegistry)
	Set pointer to Registry. More...
IRegistry *	registry () const
	Get pointer to Registry. More...
LinkManager *	linkMgr ()
	Retrieve Link manager. More...
const LinkManager *	linkMgr () const
unsigned char	version () const
	Retrieve version number of this object representation. More...
void	setVersion (unsigned char vsn)
	Set version number of this object representation. More...
unsigned long	refCount () const
	Return the refcount. More...
virtual std::ostream &	fillStream (std::ostream &s) const
	Fill the output stream (ASCII) More...
Public Member Functions inherited from Gaudi::Generic2D< AIDA::IHistogram2D, TH2D >
	Generic2D ()=default
TObject *	representation () const override
	ROOT object implementation. More...
void	adoptRepresentation (TObject *rep) override
	Adopt ROOT histogram representation. More...
void	adoptRepresentation (TObject *rep)
	Adopt ROOT histogram representation. More...
void	adoptRepresentation (TObject *rep)
	Adopt ROOT histogram representation. More...
std::string	title () const override
	Get the title of the object. More...
bool	setTitle (const std::string &title) override
	Set the title of the object. More...
std::string	name () const
	object name More...
bool	setName (const std::string &newName)
	Set the name of the object. More...
AIDA::IAnnotation &	annotation () override
	Access annotation object. More...
const AIDA::IAnnotation &	annotation () const override
	Access annotation object (cons) More...
const AIDA::IAxis &	xAxis () const override
	Return the X axis. More...
const AIDA::IAxis &	yAxis () const override
	Return the Y axis. More...
virtual int	rIndexX (int index) const
	operator methods More...
virtual int	rIndexY (int index) const
	operator methods More...
int	entries () const override
	Get the number or all the entries. More...
int	allEntries () const override
	Get the number or all the entries, both in range and underflow/overflow bins of the IProfile. More...
int	extraEntries () const override
	Get the number of entries in the underflow and overflow bins. More...
double	sumBinHeights () const override
	Get the sum of in range bin heights in the IProfile. More...
double	sumAllBinHeights () const override
	Get the sum of all the bins heights (including underflow and overflow bin). More...
double	sumExtraBinHeights () const override
	Get the sum of the underflow and overflow bin height. More...
double	minBinHeight () const override
	Get the minimum height of the in-range bins. More...
double	maxBinHeight () const override
	Get the maximum height of the in-range bins. More...
double	binMeanX (int indexX, int indexY) const override
	The weighted mean along x of a given bin. More...
double	binMeanY (int indexX, int indexY) const override
	The weighted mean along y of a given bin. More...
int	binEntries (int indexX, int indexY) const override
	The number of entries (ie the number of times fill was called for this bin). More...
int	binEntries (int indexX, int indexY) const
int	binEntries (int idX, int idY) const
int	binEntriesX (int indexX) const override
	Equivalent to projectionX().binEntries(indexX). More...
int	binEntriesY (int indexY) const override
	Equivalent to projectionY().binEntries(indexY). More...
double	binHeight (int indexX, int indexY) const override
	Total height of the corresponding bin (ie the sum of the weights in this bin). More...
double	binHeightX (int indexX) const override
	Equivalent to projectionX().binHeight(indexX). More...
double	binHeightY (int indexY) const override
	Equivalent to projectionY().binHeight(indexY). More...
double	binError (int indexX, int indexY) const override
	The error on this bin. More...
virtual double	binRms (int indexX, int indexY) const
	The spread (RMS) of this bin. More...
double	meanX () const override
	Returns the mean of the profile, as calculated on filling-time projected on the X axis. More...
double	meanY () const override
	Returns the mean of the profile, as calculated on filling-time projected on the Y axis. More...
double	rmsX () const override
	Returns the rms of the profile as calculated on filling-time projected on the X axis. More...
double	rmsY () const override
	Returns the rms of the profile as calculated on filling-time projected on the Y axis. More...
int	coordToIndexX (double coordX) const override
	Convenience method, equivalent to xAxis().coordToIndex(coord). More...
int	coordToIndexY (double coordY) const override
	Convenience method, equivalent to yAxis().coordToIndex(coord). More...
virtual double	equivalentBinEntries () const
	Number of equivalent entries, i.e. SUM[ weight ] ^ 2 / SUM[ weight^2 ] More...
virtual bool	scale (double scaleFactor)
	Scale the weights and the errors of all the IHistogram's bins (in-range and out-of-range ones) by a given scale factor. More...
bool	add (const AIDA::IHistogram2D &h) override
	Modifies this profile by adding the contents of profile to it. More...
bool	reset () override
void *	cast (const std::string &className) const override
	Introspection method. More...
void *	cast (const std::string &className) const
void *	cast (const std::string &className) const
const std::string &	userLevelClassType () const
	The AIDA user-level unterface leaf class type. More...
int	dimension () const override
	Get the Histogram's dimension. More...
std::ostream &	print (std::ostream &s) const override
	Print (ASCII) the histogram into the output stream. More...
std::ostream &	write (std::ostream &s) const override
	Write (ASCII) the histogram table into the output stream. More...
int	write (const char *file_name) const override
	Write (ASCII) the histogram table into a file. More...
Public Member Functions inherited from Gaudi::HistogramBase
virtual TObject *	representation () const =0
	ROOT object implementation. More...
virtual	~HistogramBase ()=default

Static Public Member Functions
static const CLID &	classID ()
Static Public Member Functions inherited from DataObject
static const CLID &	classID ()
	Retrieve reference to class definition structure (static access) More...

Protected Attributes
double	m_sumwx = 0
double	m_sumwy = 0
Protected Attributes inherited from Gaudi::Generic2D< AIDA::IHistogram2D, TH2D >
Axis	m_xAxis
	X axis member. More...
Axis	m_yAxis
	Y axis member. More...
AIDA::Annotation	m_annotation
	Object annotations. More...
std::unique_ptr< TH2D >	m_rep
	Reference to underlying implementation. More...
std::string	m_classType
	class type More...
int	m_sumEntries
	cache sumEntries (allEntries) when setting contents since Root can't compute by himself More...

Private Attributes
std::mutex	m_fillSerialization

Friends
void	reset (Histogram2D &h)
void	to_json (nlohmann::json &j, Histogram2D const &h)
	conversion to json via nlohmann library More...

Additional Inherited Members
Public Types inherited from Gaudi::Generic2D< AIDA::IHistogram2D, TH2D >
typedef Generic2D< AIDA::IHistogram2D, TH2D >	Base
Protected Member Functions inherited from Gaudi::Generic2D< AIDA::IHistogram2D, TH2D >
	Generic2D (TH2D *p)
	constructor More...

Detailed Description

AIDA implementation for 2 D histograms using ROOT THD2

Author

M.Frank

Definition at line 30 of file H2D.h.

Constructor & Destructor Documentation

Histogram2D() [1/2]

Gaudi::Histogram2D::Histogram2D

(

)

Standard Constructor.

Definition at line 145 of file H2D.cpp.

                              : Base( new TH2D() ) {
  m_rep->Sumw2();
  m_sumwx = m_sumwy = 0;
  setTitle( "" );
  m_rep->SetDirectory( nullptr );
}

Histogram2D() [2/2]

Gaudi::Histogram2D::Histogram2D

(

TH2D *

rep

)

Standard initializing Constructor with TH2D representation to be adopted.

Definition at line 152 of file H2D.cpp.

                                         {
  adoptRepresentation( rep );
  m_sumwx = m_sumwy = 0;
  m_rep->SetDirectory( nullptr );
}

Member Function Documentation

classID()

static const CLID& Gaudi::Histogram2D::classID ( )

inlinestatic

Definition at line 54 of file H2D.h.

{ return CLID_H2D; }

clID()

const CLID& Gaudi::Histogram2D::clID ( ) const

inlineoverridevirtual

Retrieve reference to class defininition identifier.

Reimplemented from DataObject.

Definition at line 53 of file H2D.h.

{ return classID(); }

copyFromAida()

void Gaudi::Histogram2D::copyFromAida

(

const AIDA::IHistogram2D &

h

)

Create new histogram from any AIDA based histogram.

Definition at line 206 of file H2D.cpp.

                                                           {
  // implement here the copy
  std::string titlestr = h.title();
  const char* title    = titlestr.c_str();
  if ( h.xAxis().isFixedBinning() && h.yAxis().isFixedBinning() )
    m_rep.reset( new TH2D( title, title, h.xAxis().bins(), h.xAxis().lowerEdge(), h.xAxis().upperEdge(),
                           h.yAxis().bins(), h.yAxis().lowerEdge(), h.yAxis().upperEdge() ) );
  else {
    Edges eX, eY;
    for ( int i = 0; i < h.xAxis().bins(); ++i ) eX.push_back( h.xAxis().binLowerEdge( i ) );
    // add also upperedges at the end
    eX.push_back( h.xAxis().upperEdge() );
    for ( int i = 0; i < h.yAxis().bins(); ++i ) eY.push_back( h.yAxis().binLowerEdge( i ) );
    // add also upperedges at the end
    eY.push_back( h.yAxis().upperEdge() );
    m_rep.reset( new TH2D( title, title, eX.size() - 1, &eX.front(), eY.size() - 1, &eY.front() ) );
  }
  m_xAxis.initialize( m_rep->GetXaxis(), true );
  m_yAxis.initialize( m_rep->GetYaxis(), true );
  m_rep->Sumw2();
  m_sumEntries = 0;
  m_sumwx      = 0;
  m_sumwy      = 0;
  // statistics
  double sumw  = h.sumBinHeights();
  double sumw2 = 0;
  if ( std::abs( h.equivalentBinEntries() ) > std::numeric_limits<double>::epsilon() )
    sumw2 = ( sumw * sumw ) / h.equivalentBinEntries();
  double sumwx  = h.meanX() * h.sumBinHeights();
  double sumwx2 = ( h.meanX() * h.meanX() + h.rmsX() * h.rmsX() ) * h.sumBinHeights();
  double sumwy  = h.meanY() * h.sumBinHeights();
  double sumwy2 = ( h.meanY() * h.meanY() + h.rmsY() * h.rmsY() ) * h.sumBinHeights();
  double sumwxy = 0;
 
  // copy the contents in  (AIDA underflow/overflow are -2,-1)
  for ( int i = -2; i < xAxis().bins(); ++i ) {
    for ( int j = -2; j < yAxis().bins(); ++j ) {
      // root binning starts from one !
      m_rep->SetBinContent( rIndexX( i ), rIndexY( j ), h.binHeight( i, j ) );
      m_rep->SetBinError( rIndexX( i ), rIndexY( j ), h.binError( i, j ) );
      // calculate statistics
      if ( i >= 0 && j >= 0 ) { sumwxy += h.binHeight( i, j ) * h.binMeanX( i, j ) * h.binMeanY( i, j ); }
    }
  }
  // need to do set entries after setting contents otherwise root will recalculate them
  // taking into account how many time  SetBinContents() has been called
  m_rep->SetEntries( h.allEntries() );
  // fill stat vector
  std::array<double, 11> stat = { { sumw, sumw2, sumwx, sumwx2, sumwy, sumwy2, sumwxy } };
  m_rep->PutStats( stat.data() );
}

fill()

bool Gaudi::Histogram2D::fill ( double  x, double  y, double  weight = 1.  )

override

Fill the Histogram2D with a value and the.

Definition at line 177 of file H2D.cpp.

                                                               {
  // avoid race conditiosn when filling the histogram
  auto guard = std::scoped_lock{ m_fillSerialization };
  m_rep->Fill( x, y, weight );
  return true;
}

reset()

bool Gaudi::Histogram2D::reset ( )

override

Definition at line 171 of file H2D.cpp.

                             {
  m_sumwx = 0;
  m_sumwy = 0;
  return Base::reset();
}

setBinContents()

bool Gaudi::Histogram2D::setBinContents ( int  binIndexX, int  binIndexY, int  entries, double  height, double  error, double  centreX, double  centreY  )

virtual

Fast filling method for a given bin. It can be also the over/underflow bin.

Definition at line 158 of file H2D.cpp.

                                                          {
  m_rep->SetBinContent( rIndexX( i ), rIndexY( j ), height );
  m_rep->SetBinError( rIndexX( i ), rIndexY( j ), error );
  // accumulate sumwx for in range bins
  if ( i >= 0 && j >= 0 ) {
    m_sumwx += centreX * height;
    m_sumwy += centreY * height;
  }
  m_sumEntries += entries;
  return true;
}

setRms()

bool Gaudi::Histogram2D::setRms	(	double	rmsX,
		double	rmsY
	)

Sets the rms of the histogram.

Definition at line 184 of file H2D.cpp.

                                                        {
  m_rep->SetEntries( m_sumEntries );
  std::vector<double> stat( 11 );
  stat[0] = sumBinHeights();
  stat[1] = 0;
  if ( std::abs( equivalentBinEntries() ) > std::numeric_limits<double>::epsilon() )
    stat[1] = ( sumBinHeights() * sumBinHeights() ) / equivalentBinEntries();
  stat[2]      = m_sumwx;
  stat[4]      = m_sumwy;
  double meanX = 0;
  double meanY = 0;
  if ( std::abs( sumBinHeights() ) > std::numeric_limits<double>::epsilon() ) {
    meanX = m_sumwx / sumBinHeights();
    meanY = m_sumwy / sumBinHeights();
  }
  stat[3] = ( meanX * meanX + rmsX * rmsX ) * sumBinHeights();
  stat[5] = ( meanY * meanY + rmsY * rmsY ) * sumBinHeights();
  stat[6] = 0;
  m_rep->PutStats( &stat.front() );
  return true;
}

Friends And Related Function Documentation

reset

void reset ( Histogram2D &  h )

friend

Definition at line 47 of file H2D.h.

{ h.reset(); }

to_json

void to_json ( nlohmann::json &  j, Histogram2D const &  h  )

friend

conversion to json via nlohmann library

Definition at line 49 of file H2D.h.

{ j = *h.m_rep.get(); }

Member Data Documentation

m_fillSerialization

std::mutex Gaudi::Histogram2D::m_fillSerialization

private

Definition at line 62 of file H2D.h.

m_sumwx

double Gaudi::Histogram2D::m_sumwx = 0

protected

Definition at line 58 of file H2D.h.

m_sumwy

double Gaudi::Histogram2D::m_sumwy = 0

protected

Definition at line 59 of file H2D.h.

---

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

• GaudiCommonSvc/include/GaudiCommonSvc/H2D.h
• GaudiCommonSvc/src/HistogramSvc/H2D.cpp