TVariableBinning Class Reference

Class creating a variable binning, used in the histogram manager. More...

#include <TVariableBinning.h>

Inheritance diagram for TVariableBinning:

Classes
class	LimitsNotSetException
	Exception indicating that the limits are not set. More...

Public Member Functions
	TVariableBinning ()
	TVariableBinning (Int_t nbins, const Double_t *binedges)
	TVariableBinning (const TArrayD &binedges)
virtual	~TVariableBinning ()
virtual TBinning *	MakeCopy () const
void	Set (Int_t nbins, const Double_t *binedges)
void	Set (const TArrayD &binedges)
virtual void	CreateBinEdges (TArrayD &binedges) const
Public Member Functions inherited from TBinning
	TBinning ()
virtual	~TBinning ()

Private Attributes
TArrayD	fBinEdges

Detailed Description

Class creating a variable binning, used in the histogram manager.

Author

Markus Fasel

Since

May 31st, 2016

This class creates a varible (non-linear) binning. For this the user must provide

• A minimum
• A maximum
• The number of bins

The information can be set either in the constructor

TArrayD binedges;
binedges[0] = 0.;
binedges[1] = 0.5;
binedges[2] = 1;
binedges[3] = 2.;
binedges[4] = 5.;
binedges[5] = 10.;
TVariableBinning mybinning(binedges);

or using the set function

TArrayD binedges;
binedges[0] = 0.;
binedges[1] = 0.5;
binedges[2] = 1;
binedges[3] = 2.;
binedges[4] = 5.;
binedges[5] = 10.;
TVariableBinning mybinning;
mybinning.Set(binedges);

The binning can be converted to a TArrayD which contains the bin edges in increasing order:

TArrayD binlimits;
mybinning.CreateBinEdges(binlimits);

Note

In case the binning is used together with the THistManager the last step is done by the THistManager and does not need to be performed by the user.

Definition at line 60 of file TVariableBinning.h.

Constructor & Destructor Documentation

TVariableBinning::TVariableBinning

(

)

Constructor

Definition at line 17 of file TVariableBinning.cxx.

Referenced by MakeCopy(), and TVariableBinning::LimitsNotSetException::what().

TVariableBinning::TVariableBinning	(	Int_t	nbins,
		const Double_t *	binedges
	)

Constructor, defining the bin edges from a c-array

Parameters

[in]	nbins	Number of bins
[in]	binedges	Bin edges

Definition at line 24 of file TVariableBinning.cxx.

TVariableBinning::TVariableBinning

(

const TArrayD &

binedges

)

Constructor, defining the bin edges from a ROOT-array

Parameters

[in]

binedges

Bin edges

Definition at line 31 of file TVariableBinning.cxx.

virtual TVariableBinning::~TVariableBinning ( )

inlinevirtual

Destructor

Definition at line 113 of file TVariableBinning.h.

Member Function Documentation

void TVariableBinning::CreateBinEdges ( TArrayD &  binedges ) const

virtual

Converting the variable binning in a set of bin edges

Parameters

binedges

Implements TBinning.

Definition at line 38 of file TVariableBinning.cxx.

Referenced by Set().

TBinning * TVariableBinning::MakeCopy ( ) const

virtual

Implementation of the copy function for the linear binning class

Returns

Copy of this binning with the exact same bin edges

Implements TBinning.

Definition at line 45 of file TVariableBinning.cxx.

Referenced by ~TVariableBinning().

void TVariableBinning::Set ( Int_t  nbins, const Double_t *  binedges  )

inline

Set the binning from a c-array

Parameters

[in]	nbins	Number of bins
[in]	binedges	Bin edges

Definition at line 145 of file TVariableBinning.h.

Referenced by TVariableBinning(), and ~TVariableBinning().

void TVariableBinning::Set ( const TArrayD &  binedges )

inline

Set the binning from a ROOT array

Parameters

[in]

binedges

Bin edges

Definition at line 132 of file TVariableBinning.h.

Member Data Documentation

TArrayD TVariableBinning::fBinEdges

private

Definition at line 142 of file TVariableBinning.h.

Referenced by CreateBinEdges(), and Set().

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

• PWG/Tools/TVariableBinning.h
• PWG/Tools/TVariableBinning.cxx