FastHisto2D Class Reference

#include <FastTemplate.h>

Inheritance diagram for FastHisto2D:

Public Member Functions
void	Dump () const
	FastHisto2D ()
	FastHisto2D (const TH2 &hist, bool normXonly=false)
	FastHisto2D (const FastHisto2D &other)
T	GetAt (const T &x, const T &y) const
T	IntegralWidth () const
void	Normalize ()
void	NormalizeXSlices ()
	For each X, normalize along Y. More...
FastHisto2D &	operator= (const FastHisto2D &other)
void	swap (FastHisto2D &other)
	~FastHisto2D ()
Public Member Functions inherited from FastTemplate
void	Clear ()
void	CopyValues (const FastTemplate &other)
void	CopyValues (const TH1 &other)
void	CopyValues (const TH2 &other)
void	CropUnderflows (T minimum=1e-9)
	protect from underflows (*this = max(*this, minimum)); More...
void	Dump () const
void	Exp ()
	*this = exp(*this) More...
	FastTemplate ()
	FastTemplate (unsigned int size)
	FastTemplate (const FastTemplate &other)
	FastTemplate (const TH1 &other)
	FastTemplate (const TH2 &other)
T	Integral () const
void	Log ()
	*this = log(*this) More...
void	LogRatio (const FastTemplate &reference)
	*this = log(*this)/(reference) More...
void	Meld (const FastTemplate &diff, const FastTemplate &sum, T x, T y)
	Does this += x * (diff + (sum)*y) More...
FastTemplate &	operator= (const FastTemplate &other)
FastTemplate &	operator= (const TH1 &other)
T &	operator[] (unsigned int i)
const T &	operator[] (unsigned int i) const
void	Resize (unsigned int newsize)
void	Scale (T factor)
const unsigned int	size () const
void	Subtract (const FastTemplate &reference)
	*this = *this - reference More...
	~FastTemplate ()

Private Attributes
T *	binEdgesX_
T *	binEdgesY_
T *	binWidths_
unsigned int	binX_
unsigned int	binY_

Additional Inherited Members
Public Types inherited from FastTemplate
typedef double	T
Static Public Member Functions inherited from FastTemplate
static void	SumDiff (const FastTemplate &h1, const FastTemplate &h2, FastTemplate &sum, FastTemplate &diff)
	assigns sum and diff More...
Protected Attributes inherited from FastTemplate
unsigned int	size_
T *	values_

Detailed Description

Definition at line 103 of file FastTemplate.h.

Constructor & Destructor Documentation

FastHisto2D::FastHisto2D ( )

inline

Definition at line 105 of file FastTemplate.h.

: FastTemplate(), binX_(0), binY_(0), binEdgesX_(0), binEdgesY_(0), binWidths_(0) {}

FastHisto2D::FastHisto2D	(	const TH2 &	hist,
		bool	normXonly = false
	)

Definition at line 89 of file FastTemplate.cc.

References create_public_lumi_plots::ax, binEdgesX_, binEdgesY_, binWidths_, binX_, binY_, and i.

                                                        :
    FastTemplate(hist),
    binX_(hist.GetNbinsX()), binY_(hist.GetNbinsY()),
    binEdgesX_(new T[binX_+1]),
    binEdgesY_(new T[binY_+1]),
    binWidths_(new T[size_])
{
    TAxis *ax = hist.GetXaxis(), *ay = hist.GetYaxis();
    for (unsigned int ix = 0; ix < binX_; ++ix) {
        binEdgesX_[ix] = ax->GetBinLowEdge(ix+1);
    }
    binEdgesX_[binX_] = ax->GetBinLowEdge(binX_+1);
    for (unsigned int iy = 0; iy < binY_; ++iy) {
        binEdgesY_[iy] = ay->GetBinLowEdge(iy+1);
    }
    binEdgesY_[binY_] = ay->GetBinLowEdge(binY_+1);
    for (unsigned int ix = 1, i = 0; ix <= binX_; ++ix) {
        for (unsigned int iy = 1; iy <= binY_; ++iy, ++i) {
            binWidths_[i] = (normXonly ? 1 : ax->GetBinWidth(ix))*ay->GetBinWidth(iy);
        }
    }
}

FastHisto2D::FastHisto2D

(

const FastHisto2D &

other

)

Definition at line 112 of file FastTemplate.cc.

References binEdgesX_, binEdgesY_, binWidths_, binX_, binY_, and FastTemplate::size_.

                                                 :
    FastTemplate(other),
    binX_(other.binX_), binY_(other.binY_),
    binEdgesX_(binX_ ? new T[binX_+1] : 0),
    binEdgesY_(binX_ ? new T[binY_+1] : 0),
    binWidths_(binX_ ? new T[size_] : 0)
{
    if (binX_) {
        memcpy(binEdgesX_, other.binEdgesX_, (binX_+1)*sizeof(T));
        memcpy(binEdgesY_, other.binEdgesY_, (binY_+1)*sizeof(T));
        memcpy(binWidths_, other.binWidths_, size_*sizeof(T));
    }
}

FastHisto2D::~FastHisto2D ( )

inline

Definition at line 115 of file FastTemplate.h.

References binEdgesX_, binEdgesY_, and binWidths_.

{ delete [] binEdgesX_; delete [] binEdgesY_; delete [] binWidths_; }

Member Function Documentation

void FastHisto2D::Dump

(

void

)

const

Definition at line 154 of file FastTemplate.cc.

References binEdgesX_, binEdgesY_, binWidths_, binX_, binY_, i, FastTemplate::size_, and FastTemplate::values_.

                             {
    printf("--- dumping histo template with %d x %d bins (@%p)---\n", binX_, binY_, (void*)values_);
    for (unsigned int i = 0; i < size_; ++i) {
        printf(" bin %3d, x = %6.2f, y = %6.2f: yval = %9.5f, width = %6.3f\n", 
                    i, 0.5*(binEdgesX_[i/binY_]+binEdgesX_[i/binY_+1]), 
                       0.5*(binEdgesY_[i%binY_]+binEdgesY_[(i%binY_)+1]),
                     values_[i], binWidths_[i]);
    }
    printf("\n"); 
}

FastHisto2D::T FastHisto2D::GetAt	(	const T &	x,
		const T &	y
	)		const

Definition at line 126 of file FastTemplate.cc.

References binEdgesX_, binEdgesY_, binX_, binY_, and FastTemplate::values_.

Referenced by FastVerticalInterpHistPdf2D::evaluate().

                                                            {
    T *matchx = std::lower_bound(binEdgesX_, binEdgesX_+binX_+1, x);
    int ix = (matchx - binEdgesX_ - 1);
    if (ix < 0 || unsigned(ix) >= binX_) return T(0.0);
    T *matchy = std::lower_bound(binEdgesY_, binEdgesY_+binY_+1, y);
    int iy = (matchy - binEdgesY_ - 1);
    if (iy < 0 || unsigned(iy) >= binY_) return T(0.0);
    return values_[ix * binY_ + iy];
}

FastHisto2D::T FastHisto2D::IntegralWidth

(

)

const

Definition at line 136 of file FastTemplate.cc.

References binWidths_, i, FastTemplate::size_, pileupDistInMC::total, and FastTemplate::values_.

Referenced by Normalize().

                                              {
    double total = 0;
    for (unsigned int i = 0; i < size_; ++i) total += values_[i] * binWidths_[i];
    return total;
}

void FastHisto2D::Normalize ( )

inline

Definition at line 127 of file FastTemplate.h.

References f, IntegralWidth(), and FastTemplate::Scale().

Referenced by FastVerticalInterpHistPdf2D::syncComponents(), FastVerticalInterpHistPdf2D::syncNominal(), and FastVerticalInterpHistPdf2D::syncTotal().

                         {
            T sum = IntegralWidth();
            if (sum > 0) Scale(1.0f/sum);
        }

void FastHisto2D::NormalizeXSlices

(

)

For each X, normalize along Y.

Definition at line 142 of file FastTemplate.cc.

References binWidths_, binX_, binY_, i, pileupDistInMC::total, makeHLTPrescaleTable::values, and FastTemplate::values_.

Referenced by FastVerticalInterpHistPdf2D::syncComponents(), FastVerticalInterpHistPdf2D::syncNominal(), and FastVerticalInterpHistPdf2D::syncTotal().

                                   {
    for (unsigned int ix = 0, offs = 0; ix < binX_; ++ix, offs += binY_) {
       T *values = & values_[offs], *widths = & binWidths_[offs];
       double total = 0;
       for (unsigned int i = 0; i < binY_; ++i) total += values[i] * widths[i];
       if (total > 0) {
            total = T(1.0)/total;
            for (unsigned int i = 0; i < binY_; ++i) values[i] *= total;
       } 
    }
}

FastHisto2D& FastHisto2D::operator= ( const FastHisto2D &  other )

inline

Definition at line 108 of file FastTemplate.h.

References binX_, binY_, FastTemplate::CopyValues(), and swap().

                                                          { 
            if (binX_ != other.binY_ || binY_ != other.binY_) {
                FastHisto2D fh(other);
                swap(fh);
            } else CopyValues(other); 
            return *this; 
        }

void FastHisto2D::swap ( FastHisto2D &  other )

inline

Definition at line 116 of file FastTemplate.h.

References binEdgesX_, binEdgesY_, binWidths_, binX_, binY_, FastTemplate::size_, std::swap(), and FastTemplate::values_.

Referenced by operator=().

                                      {
            std::swap(binX_, other.binX_);
            std::swap(binY_, other.binY_);
            std::swap(size_, other.size_);
            std::swap(values_, other.values_);
            std::swap(binWidths_, other.binWidths_);
            std::swap(binEdgesX_, other.binEdgesX_);
            std::swap(binEdgesY_, other.binEdgesY_);
        }

Member Data Documentation

T* FastHisto2D::binEdgesX_

private

Definition at line 137 of file FastTemplate.h.

Referenced by Dump(), FastHisto2D(), GetAt(), swap(), and ~FastHisto2D().

T* FastHisto2D::binEdgesY_

private

Definition at line 138 of file FastTemplate.h.

Referenced by Dump(), FastHisto2D(), GetAt(), swap(), and ~FastHisto2D().

T* FastHisto2D::binWidths_

private

Definition at line 139 of file FastTemplate.h.

Referenced by Dump(), FastHisto2D(), IntegralWidth(), NormalizeXSlices(), swap(), and ~FastHisto2D().

unsigned int FastHisto2D::binX_

private

Definition at line 136 of file FastTemplate.h.

Referenced by Dump(), FastHisto2D(), GetAt(), NormalizeXSlices(), operator=(), and swap().

unsigned int FastHisto2D::binY_

private

Definition at line 136 of file FastTemplate.h.

Referenced by Dump(), FastHisto2D(), GetAt(), NormalizeXSlices(), operator=(), and swap().