Definition at line 20 of file TH1Merger.h.

Public Types
enum	EMergerType { kNotCompatible = -1 , kAllSameAxes = 0 , kAllNoLimits = 1 , kHasNewLimits = 2 , kAllLabel = 3 , kLabelAndNewLimits = 4 , kAutoP2HaveLimits = 5 , kAutoP2NeedLimits = 6 }

Public Member Functions
	TH1Merger (TH1 &h, TCollection &l, Option_t *opt="")

	~TH1Merger ()

Bool_t	operator() ()
	Function performing the actual merge.

Static Public Member Functions
static Bool_t	AxesHaveLimits (const TH1 *h)

static Int_t	CheckForDuplicateLabels (const TH1 *hist)
	Check if histogram has duplicate labels Return an integer with bit set correponding on the axis that has duplicate labels e.g.

static Int_t	FindBinNumber (Int_t ibin, const TAxis &inAxis, TAxis &outAxis)

static Int_t	FindFixBinNumber (Int_t ibin, const TAxis &inAxis, const TAxis &outAxis)

static Bool_t	HasDuplicateLabels (const THashList *labels)
	Find a duplicate labels in an axis label list.

static Bool_t	IsBinEmpty (const TH1 *hist, Int_t bin, Int_t profileDim=0)
	helper function for merging

Private Member Functions
Bool_t	AutoP2BufferMerge ()

Bool_t	AutoP2BuildAxes (TH1 *)
	Determine final boundaries and number of bins for histograms created in power-of-2 autobin mode.

Bool_t	AutoP2Merge ()

Bool_t	BufferMerge ()

void	CopyBuffer (TH1 hsrc, TH1 hdes)

void	DefineNewAxes ()
	Function to define new histogram axis when merging It is call only in case of merging with different axis or with the buffer (kHasNewLimits)

Bool_t	DifferentAxesMerge ()
	Merged histogram when axis can be different.

EMergerType	ExamineHistograms ()
	Examine the list of histograms to find out which type of Merge we need to do Pass the input list containing the histogram to merge and h0 which is the initial histogram on which all the histogram of the list will be merged This are the possible cases:

Bool_t	LabelMerge (bool newLimits=false)
	Merge histograms with labels and if newLimits is set support the case that one of the axis can set new limits, if the axes are compatible.

void	MergeBin (const TH1 *hist, Int_t inbin, Int_t outbin)

void	MergeBin (const TProfile *hist, Int_t inbin, Int_t outbin)

void	MergeBin (const TProfile2D *hist, Int_t inbin, Int_t outbin)

void	MergeBin (const TProfile3D *hist, Int_t inbin, Int_t outbin)

template<class TProfileType >
void	MergeProfileBin (const TProfileType *p, Int_t ibin, Int_t outbin)

Bool_t	SameAxesMerge ()

Private Attributes
TH1 *	fH0

TH1 *	fHClone
	histogram on which the list is merged

TList	fInputList
	copy of fH0 - managed by this class

Bool_t	fIsProfile1D = kFALSE

Bool_t	fIsProfile2D = kFALSE

Bool_t	fIsProfile3D = kFALSE

Bool_t	fIsProfileMerge = kFALSE

UInt_t	fNewAxisFlag

TAxis	fNewXAxis

TAxis	fNewYAxis

TAxis	fNewZAxis

Bool_t	fNoCheck = kFALSE

Bool_t	fNoLabelMerge = kFALSE

#include </github/home/ROOT-CI/src/hist/hist/src/TH1Merger.h>

Member Enumeration Documentation

◆ EMergerType

enum TH1Merger::EMergerType

Enumerator
kNotCompatible
kAllSameAxes
kAllNoLimits
kHasNewLimits
kAllLabel
kLabelAndNewLimits
kAutoP2HaveLimits
kAutoP2NeedLimits

Definition at line 23 of file TH1Merger.h.

Constructor & Destructor Documentation

◆ TH1Merger()

TH1Merger::TH1Merger	(	TH1 &	h,
		TCollection &	l,
		Option_t *	opt = "" )

inline

Definition at line 64 of file TH1Merger.h.

◆ ~TH1Merger()

TH1Merger::~TH1Merger ( )

inline

Definition at line 91 of file TH1Merger.h.

Member Function Documentation

◆ AutoP2BufferMerge()

Bool_t TH1Merger::AutoP2BufferMerge ( )

private

Definition at line 589 of file TH1Merger.cxx.

◆ AutoP2BuildAxes()

Bool_t TH1Merger::AutoP2BuildAxes ( TH1 * h )

private

Determine final boundaries and number of bins for histograms created in power-of-2 autobin mode.

Return kTRUE if compatible, updating fNewXaxis accordingly; return kFALSE if something wrong.

The histograms are not merge-compatible if

  1. have different variable-size bins
  2. larger bin size is not an integer multiple of the smaller one
  3. the final estimated range is smalle then the bin size

Definition at line 81 of file TH1Merger.cxx.

◆ AutoP2Merge()

Bool_t TH1Merger::AutoP2Merge ( )

private

Definition at line 632 of file TH1Merger.cxx.

◆ AxesHaveLimits()

Bool_t TH1Merger::AxesHaveLimits ( const TH1 * h )

static

Definition at line 20 of file TH1Merger.cxx.

◆ BufferMerge()

Bool_t TH1Merger::BufferMerge ( )

private

Definition at line 730 of file TH1Merger.cxx.

◆ CheckForDuplicateLabels()

Int_t TH1Merger::CheckForDuplicateLabels ( const TH1 * hist )

static

Check if histogram has duplicate labels Return an integer with bit set correponding on the axis that has duplicate labels e.g.

duplicate labels on x axis : return 1 duplicate labels on x and z axis : return 5

Definition at line 925 of file TH1Merger.cxx.

◆ CopyBuffer()

void TH1Merger::CopyBuffer	(	TH1 *	hsrc,
		TH1 *	hdes )

private

Definition at line 555 of file TH1Merger.cxx.

◆ DefineNewAxes()

void TH1Merger::DefineNewAxes ( )

private

Function to define new histogram axis when merging It is call only in case of merging with different axis or with the buffer (kHasNewLimits)

Definition at line 489 of file TH1Merger.cxx.

◆ DifferentAxesMerge()

Bool_t TH1Merger::DifferentAxesMerge ( )

private

Merged histogram when axis can be different.

Histograms are merged looking at bin center positions

Definition at line 802 of file TH1Merger.cxx.

◆ ExamineHistograms()

TH1Merger::EMergerType TH1Merger::ExamineHistograms ( )

private

Examine the list of histograms to find out which type of Merge we need to do Pass the input list containing the histogram to merge and h0 which is the initial histogram on which all the histogram of the list will be merged This are the possible cases:

1. All histogram have the same axis (allSameLimits = true)
2. Histogram have different axis but compatible (allSameLimits = false) and sameLimitsX,Y,Z specifies which axis has different limits
3. Histogram do not have limits (so the Buffer is used) allHaveLimits = false
3b. One histogram has limits the other not : allHaveLimits = false AND initialLimitsFound = true
4. Histogram Have labels = allHaveLabels = true

Definition at line 220 of file TH1Merger.cxx.

◆ FindBinNumber()

static Int_t TH1Merger::FindBinNumber	(	Int_t	ibin,
		const TAxis &	inAxis,
		TAxis &	outAxis )

inlinestatic

Definition at line 45 of file TH1Merger.h.

◆ FindFixBinNumber()

static Int_t TH1Merger::FindFixBinNumber	(	Int_t	ibin,
		const TAxis &	inAxis,
		const TAxis &	outAxis )

inlinestatic

Definition at line 36 of file TH1Merger.h.

◆ HasDuplicateLabels()

Bool_t TH1Merger::HasDuplicateLabels ( const THashList * labels )

static

Find a duplicate labels in an axis label list.

Definition at line 898 of file TH1Merger.cxx.

◆ IsBinEmpty()

Bool_t TH1Merger::IsBinEmpty	(	const TH1 *	hist,
		Int_t	ibin,
		Int_t	profileDim = 0 )

static

helper function for merging

Parameters

profileDim 0 if it's a regular TH1 merge (default), 1 for TProfile, 2 for TProfile2D and 3 for TProfile3D

Definition at line 1137 of file TH1Merger.cxx.

◆ LabelMerge()

Bool_t TH1Merger::LabelMerge ( bool newLimits = false )

private

Merge histograms with labels and if newLimits is set support the case that one of the axis can set new limits, if the axes are compatible.

Definition at line 956 of file TH1Merger.cxx.

◆ MergeBin() [1/4]

void TH1Merger::MergeBin	(	const TH1 *	hist,
		Int_t	inbin,
		Int_t	outbin )

private

Definition at line 1156 of file TH1Merger.cxx.

◆ MergeBin() [2/4]

void TH1Merger::MergeBin	(	const TProfile *	hist,
		Int_t	inbin,
		Int_t	outbin )

inlineprivate

Definition at line 129 of file TH1Merger.h.

◆ MergeBin() [3/4]

void TH1Merger::MergeBin	(	const TProfile2D *	hist,
		Int_t	inbin,
		Int_t	outbin )

inlineprivate

Definition at line 130 of file TH1Merger.h.

◆ MergeBin() [4/4]

void TH1Merger::MergeBin	(	const TProfile3D *	hist,
		Int_t	inbin,
		Int_t	outbin )

inlineprivate

Definition at line 131 of file TH1Merger.h.

◆ MergeProfileBin()

template<class TProfileType >

void TH1Merger::MergeProfileBin	(	const TProfileType *	p,
		Int_t	ibin,
		Int_t	outbin )

private

Definition at line 1178 of file TH1Merger.cxx.

◆ operator()()

Bool_t TH1Merger::operator() ( )

Function performing the actual merge.

Definition at line 28 of file TH1Merger.cxx.

◆ SameAxesMerge()

Bool_t TH1Merger::SameAxesMerge ( )

private

Definition at line 756 of file TH1Merger.cxx.

Member Data Documentation

◆ fH0

TH1* TH1Merger::fH0

private

Definition at line 139 of file TH1Merger.h.

◆ fHClone

TH1* TH1Merger::fHClone

private

histogram on which the list is merged

Definition at line 140 of file TH1Merger.h.

◆ fInputList

TList TH1Merger::fInputList

private

copy of fH0 - managed by this class

Definition at line 141 of file TH1Merger.h.

◆ fIsProfile1D

Bool_t TH1Merger::fIsProfile1D = kFALSE

private

Definition at line 136 of file TH1Merger.h.

◆ fIsProfile2D

Bool_t TH1Merger::fIsProfile2D = kFALSE

private

Definition at line 137 of file TH1Merger.h.

◆ fIsProfile3D

Bool_t TH1Merger::fIsProfile3D = kFALSE

private

Definition at line 138 of file TH1Merger.h.

◆ fIsProfileMerge

Bool_t TH1Merger::fIsProfileMerge = kFALSE

private

Definition at line 135 of file TH1Merger.h.

◆ fNewAxisFlag

UInt_t TH1Merger::fNewAxisFlag

private

Definition at line 145 of file TH1Merger.h.

◆ fNewXAxis

TAxis TH1Merger::fNewXAxis

private

Definition at line 142 of file TH1Merger.h.

◆ fNewYAxis

TAxis TH1Merger::fNewYAxis

private

Definition at line 143 of file TH1Merger.h.

◆ fNewZAxis

TAxis TH1Merger::fNewZAxis

private

Definition at line 144 of file TH1Merger.h.

◆ fNoCheck

Bool_t TH1Merger::fNoCheck = kFALSE

private

Definition at line 134 of file TH1Merger.h.

◆ fNoLabelMerge

Bool_t TH1Merger::fNoLabelMerge = kFALSE

private

Definition at line 133 of file TH1Merger.h.

hist/hist/src/TH1Merger.h

hist/hist/src/TH1Merger.cxx

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Member Enumeration Documentation

◆ EMergerType

Constructor & Destructor Documentation

◆ TH1Merger()

◆ ~TH1Merger()

Member Function Documentation

◆ AutoP2BufferMerge()

◆ AutoP2BuildAxes()

◆ AutoP2Merge()

◆ AxesHaveLimits()

◆ BufferMerge()

◆ CheckForDuplicateLabels()

◆ CopyBuffer()

◆ DefineNewAxes()

◆ DifferentAxesMerge()

◆ ExamineHistograms()

◆ FindBinNumber()

◆ FindFixBinNumber()

◆ HasDuplicateLabels()

◆ IsBinEmpty()

◆ LabelMerge()

◆ MergeBin() [1/4]

◆ MergeBin() [2/4]

◆ MergeBin() [3/4]

◆ MergeBin() [4/4]

◆ MergeProfileBin()

◆ operator()()

◆ SameAxesMerge()

Member Data Documentation

◆ fH0

◆ fHClone

◆ fInputList

◆ fIsProfile1D

◆ fIsProfile2D

◆ fIsProfile3D

◆ fIsProfileMerge

◆ fNewAxisFlag

◆ fNewXAxis

◆ fNewYAxis

◆ fNewZAxis

◆ fNoCheck

◆ fNoLabelMerge