MuonCalib::PolygonBase Class Reference

#include <PolygonBase.h>

Inheritance diagram for MuonCalib::PolygonBase:

Collaboration diagram for MuonCalib::PolygonBase:

Public Member Functions
	PolygonBase (const std::vector< double > &x)
	Constructor: the vector x contains the abscissae of the base points of the polygon. More...
double	value (const int &k, const double &x) const
	get the value of the k-th base More...

Private Member Functions
void	init (const std::vector< double > &x)

Private Attributes
std::vector< double >	m_x

Detailed Description

This class provides functions which allow the user to express a polygon as a linear combination of these functions.

Author

Olive.nosp@m.r.Ko.nosp@m.rtner.nosp@m.@CER.nosp@m.N.CH

Date

29.06.2006

Definition at line 42 of file PolygonBase.h.

Constructor & Destructor Documentation

PolygonBase()

MuonCalib::PolygonBase::PolygonBase ( const std::vector< double > &  x )

inline

Constructor: the vector x contains the abscissae of the base points of the polygon.

x must contain the abscissae in increasing order.

Definition at line 46 of file PolygonBase.h.

Member Function Documentation

init()

void PolygonBase::init ( const std::vector< double > &  x )

private

Definition at line 12 of file PolygonBase.cxx.

                                                  {
 
// CHECK FOR CORRECT FILLING //
 
    for (unsigned int k=0; k<x.size()-1; k++) {
        if (x[k]>=x[k+1]) {
            throw std::runtime_error(Form("File: %s, Line: %d\nPolygonBase::init - Abscissae not in increasing order!", __FILE__, __LINE__));
        }
    }
 
// TRANSFER THE INPUT DATA //
 
    m_x = x;
 
    return;
 
}

value()

double PolygonBase::value ( const int &  k, const double &  x  ) const

virtual

get the value of the k-th base

function in x

Implements MuonCalib::BaseFunction.

Definition at line 40 of file PolygonBase.cxx.

                                                               {
 
// CHECK THE BASE FUNCTION INDEX //
 
    if (k<0 || k>static_cast<int>(m_x.size()-1)) {
        throw std::runtime_error(Form("File: %s, Line: %d\nPolygonBase::value - Illegal function index %i! Should be >0 and <%lu", __FILE__, __LINE__, k, m_x.size()));
    }
 
// CALCULATE THE VALUE OF THE BASE FUNCTION //
 
// outside the domain of the polygon //
    if (x<m_x[0] || x>m_x[m_x.size()-1]) {
        return 0.0;
    }
 
// inside the domain of the polygon //
    if (k==0 && x<m_x[0]) {
        return 0.0;
    }
    if (k==0 && x<=m_x[1]) {
        return (m_x[1]-x)/(m_x[1]-m_x[0]);
    }
    if (k==0 && x>m_x[1]) {
        return 0.0;
    }
 
    if (static_cast<unsigned int>(k)==m_x.size()-1 &&
                            x<=m_x[m_x.size()-2]) {
        return 0.0;
    }
    if (static_cast<unsigned int>(k)==m_x.size()-1 &&
                            x<=m_x[m_x.size()-1]) {
        return (x-m_x[k-1])/(m_x[k]-m_x[k-1]);
    }
    if (static_cast<unsigned int>(k)==m_x.size()-1 &&
                            x>m_x[m_x.size()-1]) {
        return 0.0;
    }
 
    if (x<m_x[k-1] || x>m_x[k+1]) {
        return 0.0;
    }
 
    if (x<m_x[k]) {
        return (x-m_x[k-1])/(m_x[k]-m_x[k-1]);
    }
 
    return (m_x[k+1]-x)/(m_x[k+1]-m_x[k]);
 
}

Member Data Documentation

m_x

std::vector<double> MuonCalib::PolygonBase::m_x

private

Definition at line 59 of file PolygonBase.h.

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

• PolygonBase.h
• PolygonBase.cxx