fftjetcms::LinInterpolatedTable1D Class Reference

#include <LinInterpolatedTable1D.h>

List of all members.

Public Member Functions
const double *	data () const
std::auto_ptr < LinInterpolatedTable1D >	inverse (unsigned npoints, bool leftExtrapolationLinear, bool rightExtrapolationLinear) const
bool	isMonotonous () const
bool	leftExtrapolationLinear () const
template<typename RealN >
	LinInterpolatedTable1D (const RealN *data, unsigned npoints, double x_min, double x_max, bool leftExtrapolationLinear, bool rightExtrapolationLinear)
template<typename RealN >
	LinInterpolatedTable1D (const std::vector< std::pair< RealN, RealN > > &v, unsigned npoints, bool leftExtrapolationLinear, bool rightExtrapolationLinear)
	LinInterpolatedTable1D (double c)
unsigned	npoints () const
bool	operator!= (const LinInterpolatedTable1D &r) const
virtual double	operator() (const double &x) const
bool	operator== (const LinInterpolatedTable1D &r) const
bool	rightExtrapolationLinear () const
double	xmax () const
double	xmin () const
virtual	~LinInterpolatedTable1D ()
Static Private Member Functions
static double	interpolateSimple (const double x0, const double x1, const double y0, const double y1, const double x)
Private Attributes
double	binwidth_
std::vector< double >	data_
bool	leftExtrapolationLinear_
bool	monotonicityKnown_
bool	monotonous_
unsigned	npoints_
bool	rightExtrapolationLinear_
double	xmax_
double	xmin_

---

Detailed Description

Definition at line 24 of file LinInterpolatedTable1D.h.

---

Constructor & Destructor Documentation

template<typename RealN >

fftjetcms::LinInterpolatedTable1D::LinInterpolatedTable1D	(	const RealN *	data,
		unsigned	npoints,
		double	x_min,
		double	x_max,
		bool	leftExtrapolationLinear,
		bool	rightExtrapolationLinear
	)		[inline]

Definition at line 114 of file LinInterpolatedTable1D.h.

References Exception.

Referenced by inverse().

        : data_(data, data+npoints),
          xmin_(x_min),
          xmax_(x_max),
          binwidth_((x_max - x_min)/(npoints - 1U)),
          npoints_(npoints),
          leftExtrapolationLinear_(leftExtrapolationLinear),
          rightExtrapolationLinear_(rightExtrapolationLinear),
          monotonous_(false),
          monotonicityKnown_(false)
    {
        if (!data)
            throw cms::Exception("FFTJetBadConfig")
                << "No data configured" << std::endl;
        if (npoints <= 1U)
            throw cms::Exception("FFTJetBadConfig")
                << "Not enough data points" << std::endl;
    }

template<typename RealN >

fftjetcms::LinInterpolatedTable1D::LinInterpolatedTable1D	(	const std::vector< std::pair< RealN, RealN > > &	v,
		unsigned	npoints,
		bool	leftExtrapolationLinear,
		bool	rightExtrapolationLinear
	)

Definition at line 138 of file LinInterpolatedTable1D.h.

References binwidth_, data_, Exception, first, i, interpolateSimple(), npoints_, edm::second(), edm::shift, findQualityFiles::v, x, xmax_, and xmin_.

        : xmin_(v[0].first),
          xmax_(v[v.size() - 1U].first),
          binwidth_((xmax_ - xmin_)/(npoints - 1U)),
          npoints_(npoints),
          leftExtrapolationLinear_(leftExtrapolationLinear),
          rightExtrapolationLinear_(rightExtrapolationLinear),
          monotonous_(false),
          monotonicityKnown_(false)
    {
        const unsigned len = v.size();
        if (len <= 1U)
            throw cms::Exception("FFTJetBadConfig")
                << "Not enough data for interpolation"
                << std::endl;

        if (npoints <= 1U)
            throw cms::Exception("FFTJetBadConfig")
                << "Not enough interpolation table entries"
                << std::endl;

        const std::pair<RealN,RealN>* vdata = &v[0];
        for (unsigned i=1; i<len; ++i)
            if (vdata[i-1U].first >= vdata[i].first)
                throw cms::Exception("FFTJetBadConfig")
                    << "Input data is not sorted properly"
                    << std::endl;

        unsigned shift = 0U;
        if (leftExtrapolationLinear)
        {
            ++npoints_;
            xmin_ -= binwidth_;
            shift = 1U;
        }
        if (rightExtrapolationLinear)
        {
            ++npoints_;
            xmax_ += binwidth_;
        }

        data_.resize(npoints_);

        if (leftExtrapolationLinear)
        {
            data_[0] = interpolateSimple(
                vdata[0].first, vdata[1].first,
                vdata[0].second, vdata[1].second, xmin_);
        }
        if (rightExtrapolationLinear)
        {
            data_[npoints_-1U] = interpolateSimple(
                vdata[len - 2U].first, vdata[len - 1U].first,
                vdata[len - 2U].second, vdata[len - 1U].second, xmax_);
        }

        data_[shift] = vdata[0].second;
        data_[npoints - 1U + shift] = vdata[len - 1U].second;
        unsigned ibelow = 0, iabove = 1;
        for (unsigned i=1; i<npoints-1; ++i)
        {
            const double x = xmin_ + (i + shift)*binwidth_;
            while (static_cast<double>(v[iabove].first) <= x)
            {
                ++ibelow;
                ++iabove;
            }
            if (v[ibelow].first == v[iabove].first)
                data_[i + shift] = (v[ibelow].second + v[iabove].second)/2.0;
            else
                data_[i + shift] = interpolateSimple(
                    v[ibelow].first, v[iabove].first,
                    v[ibelow].second, v[iabove].second, x);
        }
    }

fftjetcms::LinInterpolatedTable1D::LinInterpolatedTable1D

(

double

c

)

[explicit]

Definition at line 4 of file LinInterpolatedTable1D.cc.

        : data_(2, c),
          xmin_(0.0),
          xmax_(1.0),
          binwidth_(1.0),
          npoints_(2U),
          leftExtrapolationLinear_(false),
          rightExtrapolationLinear_(false),
          monotonous_(false),
          monotonicityKnown_(true)
    {
    }

virtual fftjetcms::LinInterpolatedTable1D::~LinInterpolatedTable1D

(

)

[inline, virtual]

Definition at line 50 of file LinInterpolatedTable1D.h.

{}

---

Member Function Documentation

const double* fftjetcms::LinInterpolatedTable1D::data

(

)

const [inline]

Definition at line 68 of file LinInterpolatedTable1D.h.

References data_.

{return &data_[0];}

static double fftjetcms::LinInterpolatedTable1D::interpolateSimple	(	const double	x0,
		const double	x1,
		const double	y0,
		const double	y1,
		const double	x
	)		[inline, static, private]

Definition at line 90 of file LinInterpolatedTable1D.h.

Referenced by LinInterpolatedTable1D().

        {
            return y0 + (y1 - y0)*((x - x0)/(x1 - x0));
        }

std::auto_ptr< LinInterpolatedTable1D > fftjetcms::LinInterpolatedTable1D::inverse	(	unsigned	npoints,
		bool	leftExtrapolationLinear,
		bool	rightExtrapolationLinear
	)		const

Definition at line 46 of file LinInterpolatedTable1D.cc.

References binwidth_, data_, i, isMonotonous(), LinInterpolatedTable1D(), npoints_, NULL, xmax_, and xmin_.

    {
        if (!isMonotonous())
            return std::auto_ptr<LinInterpolatedTable1D>(NULL);

        std::vector<std::pair<double,double> > points;
        points.reserve(npoints_);

        if (data_[npoints_ - 1U] > data_[0])
        {
            points.push_back(std::pair<double,double>(data_[0], xmin_));
            for (unsigned i=1; i<npoints_ - 1U; ++i)
                points.push_back(std::pair<double,double>(data_[i], xmin_+i*binwidth_));
            points.push_back(std::pair<double,double>(data_[npoints_ - 1U], xmax_));
        }
        else
        {
            points.push_back(std::pair<double,double>(data_[npoints_ - 1U], xmax_));
            for (unsigned i=npoints_ - 2U; i>0; --i)
                points.push_back(std::pair<double,double>(data_[i], xmin_+i*binwidth_));
            points.push_back(std::pair<double,double>(data_[0], xmin_));
        }

        return std::auto_ptr<LinInterpolatedTable1D>(
            new LinInterpolatedTable1D(points, npoints,
                                       leftExtrapolationLinear,
                                       rightExtrapolationLinear));
    }

bool fftjetcms::LinInterpolatedTable1D::isMonotonous

(

)

const

Definition at line 29 of file LinInterpolatedTable1D.cc.

References data_, delta, i, monotonicityKnown_, monotonous_, and npoints_.

Referenced by inverse().

    {
        if (!monotonicityKnown_)
        {
            monotonous_ = true;
            const double delta = data_[npoints_ - 1U] - data_[0];
            if (delta == 0.0)
                monotonous_ = false;
            const double sg = delta > 0.0 ? 1.0 : -1.0;
            for (unsigned i=1; i<npoints_ && monotonous_; ++i)
                if ((data_[i] - data_[i-1])*sg <= 0.0)
                    monotonous_ = false;
            monotonicityKnown_ = true;
        }
        return monotonous_;
    }

bool fftjetcms::LinInterpolatedTable1D::leftExtrapolationLinear

(

)

const [inline]

Definition at line 64 of file LinInterpolatedTable1D.h.

References leftExtrapolationLinear_.

            {return leftExtrapolationLinear_;}

unsigned fftjetcms::LinInterpolatedTable1D::npoints

(

)

const [inline]

Definition at line 63 of file LinInterpolatedTable1D.h.

References npoints_.

{return npoints_;}

bool fftjetcms::LinInterpolatedTable1D::operator!=

(

const LinInterpolatedTable1D &

r

)

const [inline]

Definition at line 57 of file LinInterpolatedTable1D.h.

References alignCSCRings::r.

            {return !(*this == r);}

double fftjetcms::LinInterpolatedTable1D::operator()

(

const double &

x

)

const [virtual]

Definition at line 77 of file LinInterpolatedTable1D.cc.

References binwidth_, data_, delta, leftExtrapolationLinear_, npoints_, rightExtrapolationLinear_, xmax_, and xmin_.

    {
        if (x <= xmin_)
        {
            if (leftExtrapolationLinear_)
                return data_[0] + (data_[1]-data_[0])*((x-xmin_)/binwidth_);
            else
                return data_[0];
        }
        else if (x >= xmax_)
        {
            if (rightExtrapolationLinear_)
                return data_[npoints_ - 1U] - (
                  data_[npoints_-2U]-data_[npoints_-1U])*((x-xmax_)/binwidth_);
            else
                return data_[npoints_ - 1U];
        }
        else
        {
            const unsigned ux = static_cast<unsigned>((x - xmin_)/binwidth_);
            if (ux >= npoints_ - 1U)
                return data_[npoints_ - 1U];
            const double delta = x - (ux*binwidth_ + xmin_);
            return data_[ux] + (data_[ux+1U]-data_[ux])*delta/binwidth_;
        }
    }

bool fftjetcms::LinInterpolatedTable1D::operator==

(

const LinInterpolatedTable1D &

r

)

const

Definition at line 17 of file LinInterpolatedTable1D.cc.

References binwidth_, data_, leftExtrapolationLinear_, npoints_, rightExtrapolationLinear_, xmax_, and xmin_.

    {
        return xmin_ == r.xmin_ &&
               xmax_ == r.xmax_ &&
               binwidth_ == r.binwidth_ &&
               npoints_ == r.npoints_ &&
               leftExtrapolationLinear_ == r.leftExtrapolationLinear_ &&
               rightExtrapolationLinear_ == r.rightExtrapolationLinear_ &&
               data_ == r.data_;
    }

bool fftjetcms::LinInterpolatedTable1D::rightExtrapolationLinear

(

)

const [inline]

Definition at line 66 of file LinInterpolatedTable1D.h.

References rightExtrapolationLinear_.

            {return rightExtrapolationLinear_;}

double fftjetcms::LinInterpolatedTable1D::xmax

(

)

const [inline]

Definition at line 62 of file LinInterpolatedTable1D.h.

References xmax_.

{return xmax_;}

double fftjetcms::LinInterpolatedTable1D::xmin

(

)

const [inline]

Definition at line 61 of file LinInterpolatedTable1D.h.

References xmin_.

{return xmin_;}

---

Member Data Documentation

double fftjetcms::LinInterpolatedTable1D::binwidth_ [private]

Definition at line 101 of file LinInterpolatedTable1D.h.

Referenced by inverse(), LinInterpolatedTable1D(), operator()(), and operator==().

std::vector<double> fftjetcms::LinInterpolatedTable1D::data_ [private]

Definition at line 98 of file LinInterpolatedTable1D.h.

Referenced by data(), inverse(), isMonotonous(), LinInterpolatedTable1D(), operator()(), and operator==().

bool fftjetcms::LinInterpolatedTable1D::leftExtrapolationLinear_ [private]

Definition at line 103 of file LinInterpolatedTable1D.h.

Referenced by leftExtrapolationLinear(), operator()(), and operator==().

bool fftjetcms::LinInterpolatedTable1D::monotonicityKnown_ [mutable, private]

Definition at line 106 of file LinInterpolatedTable1D.h.

Referenced by isMonotonous().

bool fftjetcms::LinInterpolatedTable1D::monotonous_ [mutable, private]

Definition at line 105 of file LinInterpolatedTable1D.h.

Referenced by isMonotonous().

unsigned fftjetcms::LinInterpolatedTable1D::npoints_ [private]

Definition at line 102 of file LinInterpolatedTable1D.h.

Referenced by inverse(), isMonotonous(), LinInterpolatedTable1D(), npoints(), operator()(), and operator==().

bool fftjetcms::LinInterpolatedTable1D::rightExtrapolationLinear_ [private]

Definition at line 104 of file LinInterpolatedTable1D.h.

Referenced by operator()(), operator==(), and rightExtrapolationLinear().

double fftjetcms::LinInterpolatedTable1D::xmax_ [private]

Definition at line 100 of file LinInterpolatedTable1D.h.

Referenced by inverse(), LinInterpolatedTable1D(), operator()(), operator==(), and xmax().

double fftjetcms::LinInterpolatedTable1D::xmin_ [private]

Definition at line 99 of file LinInterpolatedTable1D.h.

Referenced by inverse(), LinInterpolatedTable1D(), operator()(), operator==(), and xmin().