An axis with nonequidistant bins (also known as "variable binning").
It is defined by an array of bin borders  one more than the number of (nonoverflow) bins it has! As an example, an axis with two bin needs three bin borders:
This axis cannot grow; the size of new bins would not be well defined.
Public Member Functions  
RAxisIrregular ()=default  
RAxisIrregular (const std::vector< double > &binborders)  
Construct a RAxisIrregular from a vector of bin borders. More...  
RAxisIrregular (std::string_view title, const std::vector< double > &binborders)  
Construct a RAxisIrregular from a vector of bin borders. More...  
RAxisIrregular (std::string_view title, std::vector< double > &&binborders) noexcept  
Construct a RAxisIrregular from a vector of bin borders. More...  
RAxisIrregular (std::vector< double > &&binborders) noexcept  
Construct a RAxisIrregular from a vector of bin borders. More...  
int  FindBin (double x) const noexcept 
Find the bin index corresponding to coordinate x. More...  
const std::vector< double > &  GetBinBorders () const noexcept 
Access to the bin borders used by this axis. More...  
double  GetBinCenter (int bin) const noexcept 
Get the bin center of the bin with the given index. More...  
double  GetBinFrom (int bin) const noexcept 
Get the lower bin border for a given bin index. More...  
double  GetBinTo (int bin) const noexcept 
Get the higher bin border for a given bin index. More...  
operator RAxisConfig () const  
Convert to RAxisConfig. More...  
Public Member Functions inherited from ROOT::Experimental::RAxisBase  
RAxisBase (int nbinsNoOver, bool canGrow) noexcept  
Construct a RAxisBase. More...  
RAxisBase (std::string_view title, int nbinsNoOver, bool canGrow) noexcept  
Construct a RAxisBase. More...  
int  GetNBins () const noexcept 
Get the number of bins, including under and overflow. More...  
int  GetNBinsNoOver () const noexcept 
Get the number of bins, excluding under and overflow. More...  
int  GetNOverflowBins () const noexcept 
Get the number of over and underflow bins: 0 for growable axes, 2 otherwise. More...  
int  GetOverflowBin () const noexcept 
Get the bin index for the underflow bin (or the next bin outside range if CanGrow()). More...  
const std::string &  GetTitle () const 
int  GetUnderflowBin () const noexcept 
Get the bin index for the underflow bin. More...  
bool  IsOverflowBin (int bin) const noexcept 
Whether the bin index is referencing a bin higher than the axis range. More...  
bool  IsUnderflowBin (int bin) const noexcept 
Whether the bin index is referencing a bin lower than the axis range. More...  
const_iterator  begin () const noexcept 
Get a const_iterator pointing to the first nonunderflow bin. More...  
const_iterator  begin_with_underflow () const noexcept 
Get a const_iterator pointing the underflow bin. More...  
const_iterator  end () const noexcept 
Get a const_iterator pointing right beyond the last nonoverflow bin (i.e. More...  
const_iterator  end_with_overflow () const noexcept 
Get a const_iterator pointing right beyond the overflow bin. More...  
Static Public Member Functions  
static bool  CanGrow () noexcept 
This axis cannot be extended. More...  
Private Attributes  
std::vector< double >  fBinBorders 
Bin borders, one more than the number of nonoverflow bins. More...  
Additional Inherited Members  
Public Types inherited from ROOT::Experimental::RAxisBase  
enum class  EFindStatus { kCanGrow , kValid } 
Status of FindBin(x) More...  
Static Public Attributes inherited from ROOT::Experimental::RAxisBase  
static constexpr const int  kIgnoreBin = 1 
FindBin() returns this bin to signal that the bin number is invalid. More...  
static constexpr const int  kNOverflowBins [4] = {0, 1, 1, 2} 
Extra bins for each EAxisOverflow value. More...  
Protected Member Functions inherited from ROOT::Experimental::RAxisBase  
RAxisBase ()=default  
Default construct a RAxisBase (for use by derived classes for I/O) More...  
int  AdjustOverflowBinNumber (double rawbin) const 
Given rawbin (<0 for underflow, >= GetNBinsNoOver() for overflow), determine the actual bin number taking into account how over/underflow should be handled. More...  
RAxisBase (const RAxisBase &)=default  
RAxisBase (RAxisBase &&)=default  
RAxisBase &  operator= (const RAxisBase &)=default 
RAxisBase &  operator= (RAxisBase &&)=default 
#include <ROOT/RAxis.hxx>

default 

inlineexplicit 
Construct a RAxisIrregular from a vector of bin borders.

inlineexplicitnoexcept 
Construct a RAxisIrregular from a vector of bin borders.

inlineexplicit 
Construct a RAxisIrregular from a vector of bin borders.

inlineexplicitnoexcept 
Construct a RAxisIrregular from a vector of bin borders.

inlinestaticnoexcept 

inlinenoexcept 

inlinenoexcept 

inlinenoexcept 
Get the bin center of the bin with the given index.
For the bin at index 0 (i.e. the underflow bin), a bin center of std::numeric_limits<double>::min()
is returned, i.e. the minimum value that can be held in a double. Similarly, for the bin at index N + 1 (i.e. the overflow bin), a bin center of std::numeric_limits<double>::max()
is returned, i.e. the maximum value that can be held in a double.

inlinenoexcept 

inlinenoexcept 

inline 
Convert to RAxisConfig.

private 