Definition at line 17 of file TH1Merger.h.

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

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

	~TH1Merger ()

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

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. More...

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. More...

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. More...

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) More...

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

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: More...

Bool_t	LabelMerge ()
	Merge histograms with labels. More...

Bool_t	SameAxesMerge ()

Private Attributes
TH1 *	fH0

TH1 *	fHClone
	histogram on which the list is merged More...

TList	fInputList
	copy of fH0 - managed by this class More...

UInt_t	fNewAxisFlag

TAxis	fNewXAxis

TAxis	fNewYAxis

TAxis	fNewZAxis

Bool_t	fNoCheck = kFALSE

Bool_t	fNoLabelMerge = kFALSE

#include </home/sftnight/build/workspace/root-makedoc-v618/rootspi/rdoc/src/v6-18-00-patches/hist/hist/src/TH1Merger.h>

Member Enumeration Documentation

◆ EMergerType

enum TH1Merger::EMergerType

Enumerator
kNotCompatible
kAllSameAxes
kAllNoLimits
kHasNewLimits
kAllLabel
kAutoP2HaveLimits
kAutoP2NeedLimits

Definition at line 20 of file TH1Merger.h.

Constructor & Destructor Documentation

◆ TH1Merger()

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

inline

Definition at line 56 of file TH1Merger.h.

◆ ~TH1Merger()

TH1Merger::~TH1Merger ( )

inline

Definition at line 72 of file TH1Merger.h.

Member Function Documentation

◆ AutoP2BufferMerge()

Bool_t TH1Merger::AutoP2BufferMerge ( )

private

Definition at line 577 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 77 of file TH1Merger.cxx.

◆ AutoP2Merge()

Bool_t TH1Merger::AutoP2Merge ( )

private

Definition at line 620 of file TH1Merger.cxx.

◆ AxesHaveLimits()

Bool_t TH1Merger::AxesHaveLimits ( const TH1 * h )

static

Definition at line 19 of file TH1Merger.cxx.

◆ BufferMerge()

Bool_t TH1Merger::BufferMerge ( )

private

Definition at line 718 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 914 of file TH1Merger.cxx.

◆ CopyBuffer()

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

private

Definition at line 544 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 478 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 797 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 216 of file TH1Merger.cxx.

◆ FindBinNumber()

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

inlinestatic

Definition at line 41 of file TH1Merger.h.

◆ FindFixBinNumber()

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

inlinestatic

Definition at line 32 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 887 of file TH1Merger.cxx.

◆ LabelMerge()

Bool_t TH1Merger::LabelMerge ( )

private

Merge histograms with labels.

Definition at line 944 of file TH1Merger.cxx.

◆ operator()()

Bool_t TH1Merger::operator() ( )

Function performing the actual merge.

Definition at line 27 of file TH1Merger.cxx.

◆ SameAxesMerge()

Bool_t TH1Merger::SameAxesMerge ( )

private

Definition at line 744 of file TH1Merger.cxx.

Member Data Documentation

◆ fH0

TH1* TH1Merger::fH0

private

Definition at line 107 of file TH1Merger.h.

◆ fHClone

TH1* TH1Merger::fHClone

private

histogram on which the list is merged

Definition at line 108 of file TH1Merger.h.

◆ fInputList

TList TH1Merger::fInputList

private

copy of fH0 - managed by this class

Definition at line 109 of file TH1Merger.h.

◆ fNewAxisFlag

UInt_t TH1Merger::fNewAxisFlag

private

Definition at line 113 of file TH1Merger.h.

◆ fNewXAxis

TAxis TH1Merger::fNewXAxis

private

Definition at line 110 of file TH1Merger.h.

◆ fNewYAxis

TAxis TH1Merger::fNewYAxis

private

Definition at line 111 of file TH1Merger.h.

◆ fNewZAxis

TAxis TH1Merger::fNewZAxis

private

Definition at line 112 of file TH1Merger.h.

◆ fNoCheck

Bool_t TH1Merger::fNoCheck = kFALSE

private

Definition at line 106 of file TH1Merger.h.

◆ fNoLabelMerge

Bool_t TH1Merger::fNoLabelMerge = kFALSE

private

Definition at line 105 of file TH1Merger.h.

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

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()

◆ LabelMerge()

◆ operator()()

◆ SameAxesMerge()

Member Data Documentation

◆ fH0

◆ fHClone

◆ fInputList

◆ fNewAxisFlag

◆ fNewXAxis

◆ fNewYAxis

◆ fNewZAxis

◆ fNoCheck

◆ fNoLabelMerge