An axis with non-equidistant bins (also known as "variable binning").

It is defined by an array of bin borders - one more than the number of (non-overflow-) bins it has! As an example, an axis with two bin needs three bin borders:

lower edge of the first bin;
higher edge of the first bin, identical to the lower edge of the second bin;
higher edge of the second bin

This axis cannot grow; the size of new bins would not be well defined.

Definition at line 595 of file RAxis.hxx.

Public Member Functions
	RAxisIrregular ()=default

	RAxisIrregular (const std::vector< double > &binborders)
	Construct a RAxisIrregular from a vector of bin borders.

	RAxisIrregular (std::string_view title, const std::vector< double > &binborders)
	Construct a RAxisIrregular from a vector of bin borders.

	RAxisIrregular (std::string_view title, std::vector< double > &&binborders) noexcept
	Construct a RAxisIrregular from a vector of bin borders.

	RAxisIrregular (std::vector< double > &&binborders) noexcept
	Construct a RAxisIrregular from a vector of bin borders.

bool	CanGrow () const noexcept final override
	This axis cannot be extended.

int	FindBin (double x) const noexcept final override
	Find the bin index (adjusted with under- and overflow) for the given coordinate `x`.

const std::vector< double > &	GetBinBorders () const noexcept
	Access to the bin borders used by this axis.

double	GetBinCenter (int bin) const final override
	Get the bin center of the bin with the given index.

double	GetBinFrom (int bin) const final override
	Get the lower bin border for a given bin index.

int	GetBinIndexForLowEdge (double x) const noexcept final override
	If the coordinate `x` is within 10 ULPs of a bin low edge coordinate, return the bin for which this is a low edge.

int	GetNBinsNoOver () const noexcept final override
	Get the number of bins, excluding under- and overflow.

	operator RAxisConfig () const
	Convert to RAxisConfig.

Public Member Functions inherited from ROOT::Experimental::RAxisBase
double	GetBinTo (int bin) const
	Get the high bin border ("right edge") for the given bin index.

int	GetFirstBin () const noexcept
	Get the bin index for the first bin of the axis.

int	GetLastBin () const noexcept
	Get the bin index for the last bin of the axis.

double	GetMaximum () const
	Get the high end of the axis range.

double	GetMinimum () const
	Get the low end of the axis range.

int	GetNBins () const noexcept
	Get the number of bins, including under- and overflow.

int	GetNOverflowBins () const noexcept
	Get the number of over- and underflow bins: 0 for growable axes, 2 otherwise.

int	GetOverflowBin () const noexcept
	Get the bin index for the overflow bin (or `kInvalidBin` if CanGrow()).

const std::string &	GetTitle () const
	Get the axis's title.

int	GetUnderflowBin () const noexcept
	Get the bin index for the underflow bin (or `kInvalidBin` if CanGrow()).

bool	HasSameBinningAs (const RAxisBase &other) const
	Check if two axes use the same binning convention, i.e.

const_iterator	begin () const noexcept
	Get a const_iterator pointing to the first regular bin.

const_iterator	end () const noexcept
	Get a const_iterator pointing beyond the last regular bin.

Protected Member Functions
double	FindBinRaw (double x) const noexcept
	Find the raw bin index (not adjusted) for the given coordinate `x`.

bool	HasSameBinBordersAs (const RAxisBase &other) const override
	See RAxisBase::HasSameBinBordersAs.

Protected Member Functions inherited from ROOT::Experimental::RAxisBase
	RAxisBase () noexcept(noexcept(std::string()))=default
	Default construct a RAxisBase (for use by derived classes for I/O)

	RAxisBase (std::string_view title) noexcept
	Construct a RAxisBase.

virtual	~RAxisBase ()
	Virtual destructor needed in this inheritance-based design.

int	AdjustOverflowBinNumber (double rawbin) const
	Given rawbin (`<0` for underflow, `>=GetNBinsNoOver()` for overflow), determine the bin number taking into account how over/underflow should be handled.

	RAxisBase (const RAxisBase &)=default

	RAxisBase (RAxisBase &&)=default

RAxisBase &	operator= (const RAxisBase &)=default

RAxisBase &	operator= (RAxisBase &&)=default

Private Attributes
std::vector< double >	fBinBorders
	Bin borders, one more than the number of regular bins.

Additional Inherited Members
Static Public Attributes inherited from ROOT::Experimental::RAxisBase
static constexpr const int	kInvalidBin = 0
	Special bin index returned to signify that no bin matches a request.

static constexpr const int	kOverflowBin = -2
	Index of the overflow bin, if any.

static constexpr const int	kUnderflowBin = -1
	Index of the underflow bin, if any.

#include <ROOT/RAxis.hxx>

Inheritance diagram for ROOT::Experimental::RAxisIrregular:

[legend]

Constructor & Destructor Documentation

◆ RAxisIrregular() [1/5]

ROOT::Experimental::RAxisIrregular::RAxisIrregular ( )

default

◆ RAxisIrregular() [2/5]

ROOT::Experimental::RAxisIrregular::RAxisIrregular ( const std::vector< double > & binborders )

inlineexplicit

Construct a RAxisIrregular from a vector of bin borders.

Note: The bin borders must be sorted in increasing order!

Definition at line 622 of file RAxis.hxx.

◆ RAxisIrregular() [3/5]

ROOT::Experimental::RAxisIrregular::RAxisIrregular ( std::vector< double > && binborders )

inlineexplicitnoexcept

Construct a RAxisIrregular from a vector of bin borders.

Note: The bin borders must be sorted in increasing order! Faster, noexcept version taking an rvalue of binborders. The compiler will know when it can take this one.

Definition at line 635 of file RAxis.hxx.

◆ RAxisIrregular() [4/5]

ROOT::Experimental::RAxisIrregular::RAxisIrregular	(	std::string_view	title,
		const std::vector< double > &	binborders
	)

inlineexplicit

Construct a RAxisIrregular from a vector of bin borders.

Note: The bin borders must be sorted in increasing order!

Definition at line 646 of file RAxis.hxx.

◆ RAxisIrregular() [5/5]

ROOT::Experimental::RAxisIrregular::RAxisIrregular	(	std::string_view	title,
		std::vector< double > &&	binborders
	)

inlineexplicitnoexcept

Construct a RAxisIrregular from a vector of bin borders.

Note: The bin borders must be sorted in increasing order! Faster, noexcept version taking an rvalue of binborders. The compiler will know when it can take this one.

Definition at line 659 of file RAxis.hxx.

Member Function Documentation

◆ CanGrow()

bool ROOT::Experimental::RAxisIrregular::CanGrow ( ) const

inlinefinaloverridevirtualnoexcept

This axis cannot be extended.

Implements ROOT::Experimental::RAxisBase.

Definition at line 708 of file RAxis.hxx.

◆ FindBin()

int ROOT::Experimental::RAxisIrregular::FindBin ( double x ) const

inlinefinaloverridevirtualnoexcept

Find the bin index (adjusted with under- and overflow) for the given coordinate x.

Note: Passing a bin border coordinate can either return the bin above or below the bin border. I.e. don't do that for reliable results!

Implements ROOT::Experimental::RAxisBase.

Definition at line 677 of file RAxis.hxx.

◆ FindBinRaw()

double ROOT::Experimental::RAxisIrregular::FindBinRaw ( double x ) const

inlineprotectednoexcept

Find the raw bin index (not adjusted) for the given coordinate x.

The resulting raw bin is 1-based.

Note: Passing a bin border coordinate can either return the bin above or below the bin border. I.e. don't do that for reliable results!

Definition at line 608 of file RAxis.hxx.

◆ GetBinBorders()

const std::vector< double > & ROOT::Experimental::RAxisIrregular::GetBinBorders ( ) const

inlinenoexcept

Access to the bin borders used by this axis.

Definition at line 711 of file RAxis.hxx.

◆ GetBinCenter()

double ROOT::Experimental::RAxisIrregular::GetBinCenter ( int bin ) const

inlinefinaloverridevirtual

Get the bin center of the bin with the given index.

The result of this method on an overflow or underflow bin is unspecified.

Implements ROOT::Experimental::RAxisBase.

Definition at line 691 of file RAxis.hxx.

◆ GetBinFrom()

double ROOT::Experimental::RAxisIrregular::GetBinFrom ( int bin ) const

inlinefinaloverridevirtual

Get the lower bin border for a given bin index.

The result of this method on an underflow bin is unspecified.

Implements ROOT::Experimental::RAxisBase.

Definition at line 695 of file RAxis.hxx.

◆ GetBinIndexForLowEdge()

int ROOT::Experimental::RAxisIrregular::GetBinIndexForLowEdge ( double x ) const

finaloverridevirtualnoexcept

If the coordinate x is within 10 ULPs of a bin low edge coordinate, return the bin for which this is a low edge.

If it's not a bin edge, return kInvalidBin.

Implements ROOT::Experimental::RAxisBase.

Definition at line 91 of file RAxis.cxx.

◆ GetNBinsNoOver()

int ROOT::Experimental::RAxisIrregular::GetNBinsNoOver ( ) const

inlinefinaloverridevirtualnoexcept

Get the number of bins, excluding under- and overflow.

Implements ROOT::Experimental::RAxisBase.

Definition at line 672 of file RAxis.hxx.

◆ HasSameBinBordersAs()

bool ROOT::Experimental::RAxisIrregular::HasSameBinBordersAs ( const RAxisBase & other ) const

overrideprotectedvirtual

See RAxisBase::HasSameBinBordersAs.

Reimplemented from ROOT::Experimental::RAxisBase.

Definition at line 114 of file RAxis.cxx.

◆ operator RAxisConfig()

ROOT::Experimental::RAxisIrregular::operator RAxisConfig ( ) const

inline

Convert to RAxisConfig.

Definition at line 669 of file RAxis.hxx.

Member Data Documentation

◆ fBinBorders

std::vector<double> ROOT::Experimental::RAxisIrregular::fBinBorders

private

Bin borders, one more than the number of regular bins.

Definition at line 598 of file RAxis.hxx.

Libraries for ROOT::Experimental::RAxisIrregular:

[legend]

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

hist/histv7/inc/ROOT/RAxis.hxx
hist/histv7/src/RAxis.cxx

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ RAxisIrregular() [1/5]

◆ RAxisIrregular() [2/5]

◆ RAxisIrregular() [3/5]

◆ RAxisIrregular() [4/5]

◆ RAxisIrregular() [5/5]

Member Function Documentation

◆ CanGrow()

◆ FindBin()

◆ FindBinRaw()

◆ GetBinBorders()

◆ GetBinCenter()

◆ GetBinFrom()

◆ GetBinIndexForLowEdge()

◆ GetNBinsNoOver()

◆ HasSameBinBordersAs()

◆ operator RAxisConfig()

Member Data Documentation

◆ fBinBorders