#include <HistoPdf.h>

Inheritance diagram for funct::HistoPdf:

Public Member Functions
void	dump ()

	HistoPdf ()

template<typename Iterator >
	HistoPdf (double xMin, double xMax, const Iterator &begin, const Iterator &end)

template<typename Iterator >
void	init (double xMin, double xMax, const Iterator &begin, const Iterator &end)

double	operator() (double x) const

void	rebin (unsigned int r)

Private Attributes
double	binSize_

double	delta_

double	xMax_

double	xMin_

std::vector< double >	y_

Detailed Description

Definition at line 10 of file HistoPdf.h.

Constructor & Destructor Documentation

◆ HistoPdf() [1/2]

template<typename Iterator >

funct::HistoPdf::HistoPdf	(	double	xMin,
		double	xMax,
		const Iterator &	begin,
		const Iterator &	end
	)

inline

Definition at line 13 of file HistoPdf.h.

         : xMin_(xMin), xMax_(xMax), delta_(xMax - xMin), binSize_(delta_ / (end - begin)), y_(end - begin) {
       double s = 0;
       unsigned int i = 0;
       for (Iterator it = begin; it != end; ++it)
         s += (y_[i++] = *it);
       for (std::vector<double>::iterator i = y_.begin(); i != y_.end(); ++i)
         *i /= s;
     }

References begin, end, mps_fire::i, alignCSCRings::s, and y_.

◆ HistoPdf() [2/2]

funct::HistoPdf::HistoPdf ( )

inline

Definition at line 22 of file HistoPdf.h.

22 {}

Member Function Documentation

◆ dump()

void funct::HistoPdf::dump ( void )

inline

Definition at line 56 of file HistoPdf.h.

                 {
       std::cout << ">>> range: [" << xMin_ << ", " << xMax_ << "], bin size: " << delta_ << "/" << y_.size() << " = "
                 << binSize_ << std::endl;
       double s = 0;
       for (unsigned int i = 0; i != y_.size(); ++i) {
         double x = xMin_ + (0.5 + i) * binSize_;
         double y = operator()(x);
         std::cout << ">>> pdf(" << x << ") = " << y << std::endl;
         s += y * binSize_;
       }
       std::cout << ">>>: PDF normalization is " << s << std::endl;
     }

References binSize_, gather_cfg::cout, delta_, mps_fire::i, operator()(), alignCSCRings::s, xMax_, xMin_, and y_.

◆ init()

template<typename Iterator >

void funct::HistoPdf::init	(	double	xMin,
		double	xMax,
		const Iterator &	begin,
		const Iterator &	end
	)

inline

Definition at line 24 of file HistoPdf.h.

                                                                                     {
       xMin_ = xMin;
       xMax_ = xMax;
       delta_ = xMax - xMin;
       unsigned int n = end - begin;
       binSize_ = delta_ / n;
       y_.resize(n);
       double s = 0;
       unsigned int i = 0;
       for (Iterator it = begin; it != end; ++it)
         s += (y_[i++] = *it);
       for (std::vector<double>::iterator i = y_.begin(); i != y_.end(); ++i)
         *i /= s;
     }

References begin, binSize_, delta_, end, mps_fire::i, dqmiodumpmetadata::n, alignCSCRings::s, multiplicitycorr_cfi::xMax, xMax_, photonAnalyzer_cfi::xMin, xMin_, and y_.

Referenced by funct::RootHistoPdf::RootHistoPdf().

◆ operator()()

double funct::HistoPdf::operator() ( double x ) const

inline

Definition at line 38 of file HistoPdf.h.

                                       {
       if (x < xMin_ || x > xMax_)
         return 0;
       double pdf = y_[static_cast<unsigned int>(((x - xMin_) / delta_) * y_.size())] / binSize_;
       return pdf;
     }

References binSize_, delta_, xMax_, xMin_, and y_.

Referenced by dump().

◆ rebin()

void funct::HistoPdf::rebin ( unsigned int r )

inline

Definition at line 44 of file HistoPdf.h.

                                {
       if (y_.size() % r != 0)
         throw edm::Exception(edm::errors::Configuration)
             << "HistoPdf: can't rebin histogram of " << y_.size() << " entries by " << r << "\n";
       unsigned int n = y_.size() / r;
       std::vector<double> y(n, 0);
       for (unsigned int i = 0, j = 0; i < n; ++i)
         for (unsigned int k = 0; k < r; ++k)
           y[i] += y_[j++];
       y_ = y;
       binSize_ *= r;
     }