HCovarianceVSxy Class Reference

#include <Histograms.h>

Inherits Histograms.

Public Member Functions
void	Clear () override
void	Fill (const double &x, const double &y, const double &a, const double &b) override
double	Get (const double &x, const double &y) const
	HCovarianceVSxy (const TString &name, const TString &title, const int totBinsX, const double &xMin, const double &xMax, const int totBinsY, const double &yMin, const double &yMax, TDirectory *dir=0, bool varianceCheck=false)
	HCovarianceVSxy (TFile *inputFile, const TString &name, const TString &dirName)
	Contructor to read histograms from file. More...
void	Write () override
	~HCovarianceVSxy () override

Protected Member Functions
int	getXindex (const double &x) const
int	getYindex (const double &y) const

Protected Attributes
Covariance **	covariances_
double	deltaX_
double	deltaY_
TH2D *	histoCovariance_
TH1D ***	histoVarianceCheck_
bool	readMode_
int	totBinsX_
int	totBinsY_
int	totBinsZ_
bool	varianceCheck_
double	xMin_
double	yMin_

Detailed Description

This class can be used to compute the covariance of two variables with respect to other two variables (to see e.g. how does the covariance of ptVSphi vary with respect to (pt,eta).

Definition at line 1818 of file Histograms.h.

Constructor & Destructor Documentation

HCovarianceVSxy::HCovarianceVSxy ( const TString &  name, const TString &  title, const int  totBinsX, const double &  xMin, const double &  xMax, const int  totBinsY, const double &  yMin, const double &  yMax, TDirectory *  dir = 0, bool  varianceCheck = false  )

inline

Definition at line 1821 of file Histograms.h.

References dir, mps_fire::i, and dataset::name.

                                                                            :
    totBinsX_(totBinsX), totBinsY_(totBinsY),
    xMin_(xMin), deltaX_(xMax-xMin), yMin_(yMin), deltaY_(yMax-yMin),
    readMode_(false),
    varianceCheck_(varianceCheck)
  {
    name_ = name;
    histoDir_ = dir;
    histoCovariance_ = new TH2D(name+"Covariance", title+" covariance", totBinsX, xMin, xMax, totBinsY, yMin, yMax);

    covariances_ = new Covariance*[totBinsX];
    for( int i=0; i<totBinsX; ++i ) {
      covariances_[i] = new Covariance[totBinsY];
    }
    if( varianceCheck_ ) {
      histoVarianceCheck_ = new TH1D**[totBinsX_];
      for( int i=0; i<totBinsX_; ++i ) {
        histoVarianceCheck_[i] = new TH1D*[totBinsY_];
        for( int j=0; j<totBinsY_; ++j ) {
          std::stringstream namei;
          std::stringstream namej;
          namei << i;
          namej << j;
          histoVarianceCheck_[i][j] = new TH1D(name+"_"+namei.str()+"_"+namej.str(), name, 10000, -1, 1);
        }
      }
    }
  }

HCovarianceVSxy::HCovarianceVSxy ( TFile *  inputFile, const TString &  name, const TString &  dirName  )

inline

Contructor to read histograms from file.

Definition at line 1853 of file Histograms.h.

References gather_cfg::cout, and cmsRelvalreport::exit.

                                                                                      :
    readMode_(true)
  {
    histoDir_ = (TDirectory*)(inputFile->Get(dirName.Data()));
    if( histoDir_ == nullptr ) {
      std::cout << "Error: directory not found" << std::endl;
      exit(0);
    }
    histoCovariance_ = (TH2D*)(histoDir_->Get(name));
    totBinsX_ = histoCovariance_->GetNbinsX();
    xMin_ = histoCovariance_->GetXaxis()->GetBinLowEdge(1);
    deltaX_ = histoCovariance_->GetXaxis()->GetBinUpEdge(totBinsX_) - xMin_;
    totBinsY_ = histoCovariance_->GetNbinsY();
    yMin_ = histoCovariance_->GetYaxis()->GetBinLowEdge(1);
    deltaY_ = histoCovariance_->GetYaxis()->GetBinUpEdge(totBinsY_) - yMin_;
  }

HCovarianceVSxy::~HCovarianceVSxy ( )

inlineoverride

Definition at line 1870 of file Histograms.h.

References mps_fire::i.

                              {
    delete histoCovariance_;
    // Free covariances
    for(int i=0; i<totBinsX_; ++i) {
      delete[] covariances_[i];
    }
    delete[] covariances_;
    // Free variance check histograms
    if( varianceCheck_ ) {
      for( int i=0; i<totBinsX_; ++i ) {
        for( int j=0; j<totBinsY_; ++j ) {
          delete histoVarianceCheck_[i][j];
        }
        delete[] histoVarianceCheck_[i];
      }
      delete[] histoVarianceCheck_;
    }
  }

Member Function Documentation

void HCovarianceVSxy::Clear ( )

inlineoverride

Definition at line 1954 of file Histograms.h.

References mps_fire::i.

                        {
    histoCovariance_->Clear();
    if( varianceCheck_ ) {
      for( int i=0; i<totBinsX_; ++i ) {
        for( int j=0; j<totBinsY_; ++j ) {
          histoVarianceCheck_[i][j]->Clear();
        }
      }
    }
  }

void HCovarianceVSxy::Fill ( const double &  x, const double &  y, const double &  a, const double &  b  )

inlineoverride

x and y should be the variables VS which we are computing the covariance (pt and eta) a and b should be the variables OF which we are computing the covariance

Definition at line 1893 of file Histograms.h.

Referenced by ResolutionAnalyzer::analyze().

                                                                                               {
    // Need to convert the (x,y) values to the array indeces
    int xIndex = getXindex(x);
    int yIndex = getYindex(y);
    // Only fill values if they are in the selected range
    if ( 0 <= xIndex && xIndex < totBinsX_ && 0 <= yIndex && yIndex < totBinsY_ ) {
      // if( TString(histoCovariance_->GetName()).Contains("CovarianceCotgTheta_Covariance") )
      covariances_[xIndex][yIndex].fill(a,b);
      // Should be used with the variance, in which case a==b
      if( varianceCheck_ ) histoVarianceCheck_[xIndex][yIndex]->Fill(a);
    }
  }

double HCovarianceVSxy::Get ( const double &  x, const double &  y  ) const

inline

Definition at line 1906 of file Histograms.h.

                                                         {
    // Need to convert the (x,y) values to the array indeces
    int xIndex = getXindex(x);
    int yIndex = getYindex(y);
    // If the values exceed the limits of the histogram, return the border values
    if ( xIndex < 0 ) xIndex = 0;
    if ( xIndex >= totBinsX_ ) xIndex = totBinsX_-1;
    if ( yIndex < 0 ) yIndex = 0;
    if ( yIndex >= totBinsY_ ) yIndex = totBinsY_-1;
    return histoCovariance_->GetBinContent(xIndex+1, yIndex+1);
  }

int HCovarianceVSxy::getXindex ( const double &  x ) const

inlineprotected

Definition at line 1965 of file Histograms.h.

References createfilelist::int.

                                        {
    return int((x-xMin_)/deltaX_*totBinsX_);
  }

int HCovarianceVSxy::getYindex ( const double &  y ) const

inlineprotected

Definition at line 1968 of file Histograms.h.

References createfilelist::int.

                                        {
    return int((y-yMin_)/deltaY_*totBinsY_);
  }

void HCovarianceVSxy::Write ( )

inlineoverride

Definition at line 1918 of file Histograms.h.

References svgfig::canvas(), gather_cfg::cout, and cuy::yBin.

Referenced by ResolutionAnalyzer::writeHistoMap().

                        {
    if( !readMode_ ) {
      std::cout << "writing: " << histoCovariance_->GetName() << std::endl;
      for( int xBin=0; xBin<totBinsX_; ++xBin ) {
        for( int yBin=0; yBin<totBinsY_; ++yBin ) {
          double covariance = covariances_[xBin][yBin].covariance();
          // Histogram bins start from 1
          // std::cout << "covariance["<<xBin<<"]["<<yBin<<"] with N = "<<covariances_[xBin][yBin].getN()<<" is: " << covariance << std::endl;
          histoCovariance_->SetBinContent(xBin+1, yBin+1, covariance);
        }
      }
      if( histoDir_ != nullptr ) histoDir_->cd();
      TCanvas canvas(TString(histoCovariance_->GetName())+"_canvas", TString(histoCovariance_->GetTitle())+" canvas", 1000, 800);
      canvas.Divide(2);
      canvas.cd(1);
      histoCovariance_->Draw("lego");
      canvas.cd(2);
      histoCovariance_->Draw("surf5");
      canvas.Write();
      histoCovariance_->Write();

      TDirectory * binsDir = nullptr;
      if( varianceCheck_ ) {
        if ( histoDir_ != nullptr ) {
          histoDir_->cd();
          if( binsDir == nullptr ) binsDir = histoDir_->mkdir(name_+"Bins");
          binsDir->cd();
        }
        for( int xBin=0; xBin<totBinsX_; ++xBin ) {
          for( int yBin=0; yBin<totBinsY_; ++yBin ) {
            histoVarianceCheck_[xBin][yBin]->Write();
          }
        }
      }
    }
  }

Member Data Documentation

Covariance** HCovarianceVSxy::covariances_

protected

Definition at line 1972 of file Histograms.h.

double HCovarianceVSxy::deltaX_

protected

Definition at line 1974 of file Histograms.h.

double HCovarianceVSxy::deltaY_

protected

Definition at line 1974 of file Histograms.h.

TH2D* HCovarianceVSxy::histoCovariance_

protected

Definition at line 1971 of file Histograms.h.

TH1D*** HCovarianceVSxy::histoVarianceCheck_

protected

Definition at line 1977 of file Histograms.h.

bool HCovarianceVSxy::readMode_

protected

Definition at line 1975 of file Histograms.h.

int HCovarianceVSxy::totBinsX_

protected

Definition at line 1973 of file Histograms.h.

int HCovarianceVSxy::totBinsY_

protected

Definition at line 1973 of file Histograms.h.

int HCovarianceVSxy::totBinsZ_

protected

Definition at line 1973 of file Histograms.h.

bool HCovarianceVSxy::varianceCheck_

protected

Definition at line 1976 of file Histograms.h.

double HCovarianceVSxy::xMin_

protected

Definition at line 1974 of file Histograms.h.

double HCovarianceVSxy::yMin_

protected

Definition at line 1974 of file Histograms.h.