MultipleScatteringX0Data Class Reference

#include <MultipleScatteringX0Data.h>

Inheritance diagram for MultipleScatteringX0Data:

Public Member Functions
float	maxEta () const
float	minEta () const
	MultipleScatteringX0Data ()
int	nBinsEta () const
virtual float	sumX0atEta (float eta, float r) const
virtual	~MultipleScatteringX0Data ()

Private Member Functions
std::string	fileName ()

Private Attributes
TH2F *	theData
TFile *	theFile

Detailed Description

Definition at line 17 of file MultipleScatteringX0Data.h.

Constructor & Destructor Documentation

MultipleScatteringX0Data::MultipleScatteringX0Data

(

)

Definition at line 16 of file MultipleScatteringX0Data.cc.

References edm::hlt::Exception, lut2db_cfg::filename, fileName(), theData, and theFile.

  : theFile(0), theData(0)
{
  string filename = fileName(); 
  theFile = new TFile(filename.c_str(),"READ");
  if (theFile) {
    theData = dynamic_cast<TH2F*> (theFile->GetKey("h100")->ReadObj());
  }
  if (!theData)  {
    throw cms::Exception("Data not found")  
         << " ** MultipleScatteringX0Data ** file: "
         << filename 
         <<" <-- no data found!!!";
  }
}

MultipleScatteringX0Data::~MultipleScatteringX0Data ( )

virtual

Definition at line 32 of file MultipleScatteringX0Data.cc.

References theFile.

{
  if(theFile) {
    theFile->Close();
    delete theFile;
  }
}

Member Function Documentation

string MultipleScatteringX0Data::fileName ( )

private

Definition at line 40 of file MultipleScatteringX0Data.cc.

References f, and edm::FileInPath::fullPath().

Referenced by MultipleScatteringX0Data().

{
  string defName="RecoTracker/TkMSParametrization/data/MultipleScatteringX0Data.root";
  edm::FileInPath f(defName);
  return f.fullPath();
} 

float MultipleScatteringX0Data::maxEta

(

)

const

Definition at line 59 of file MultipleScatteringX0Data.cc.

References theData.

Referenced by MSLayersKeeperX0AtEta::init().

{
  if (theData) return theData->GetXaxis()->GetXmax();
  else return 0;
}

float MultipleScatteringX0Data::minEta

(

)

const

Definition at line 53 of file MultipleScatteringX0Data.cc.

References theData.

{
  if (theData) return theData->GetXaxis()->GetXmin();
  else return 0;
}

int MultipleScatteringX0Data::nBinsEta

(

)

const

Definition at line 47 of file MultipleScatteringX0Data.cc.

References theData.

Referenced by MSLayersKeeperX0AtEta::init().

{
  if (theData) return theData->GetNbinsX();
  else return 0;
}

float MultipleScatteringX0Data::sumX0atEta ( float  eta, float  r  ) const

virtual

Implements SumX0AtEtaDataProvider.

Definition at line 65 of file MultipleScatteringX0Data.cc.

References theData.

{
  if(!theData) return 0.;
  eta = fabs(eta);

  int ieta = theData->GetXaxis()->FindBin(eta);
  int irad = theData->GetYaxis()->FindBin(r);

  if (irad < theData->GetNbinsY()) { 
    return theData->GetBinContent(ieta,irad);
  } 
  else {
    float sumX0 = 0;
    for(int ir = theData->GetNbinsY(); ir > 0; ir--) {
      float val = theData->GetBinContent(ieta, ir);
      if (val > sumX0) sumX0 = val;
    }
    return sumX0;
  }
}

Member Data Documentation

TH2F* MultipleScatteringX0Data::theData

private

Definition at line 31 of file MultipleScatteringX0Data.h.

Referenced by maxEta(), minEta(), MultipleScatteringX0Data(), nBinsEta(), and sumX0atEta().

TFile* MultipleScatteringX0Data::theFile

private

Definition at line 30 of file MultipleScatteringX0Data.h.

Referenced by MultipleScatteringX0Data(), and ~MultipleScatteringX0Data().