C++ TAxis::GetFirst方法代码示例

//________________________________________________________________
void KVCanvas::DynamicZoom(Int_t Sign, Int_t px, Int_t py)
{
   // Zoom in or out of histogram with mouse wheel

   //    Info("DynamicZoom","px=%d py=%d",px,py);

   if (!fSelected) return;
   TH2* TheHisto = (TH2*) FindHisto();//fSelected;

   Double_t percent = 0.15 - Sign * 0.05;

   Int_t dX = 0;
   Int_t dY = 0;

   Double_t ppx = AbsPixeltoX(px);
   Double_t ppy = AbsPixeltoY(py);

   TAxis* ax = TheHisto->GetXaxis();
   Int_t NbinsXtmp = ax->GetNbins();
   Int_t X0tmp = ax->GetFirst();
   Int_t X1tmp = ax->GetLast();
   Int_t step = TMath::Min(TMath::Max(1, (Int_t)(percent * (X1tmp - X0tmp))), NbinsXtmp / 2);
   step *= Sign;
   X0tmp = TMath::Min(TMath::Max(X0tmp + step, 1), X1tmp - step);
   X1tmp = TMath::Max(TMath::Min(X1tmp - step, NbinsXtmp), X0tmp);
   if (X0tmp >= X1tmp) X0tmp = X1tmp - 1;
   if (Sign > 0) dX = (Int_t)(X0tmp + (X1tmp - X0tmp) * 0.5 - ax->FindBin(ppx));
   if ((X0tmp - dX) < 0) ax->SetRange(0, X1tmp - X0tmp);
   else if ((X1tmp - dX) > ax->GetNbins()) ax->SetRange(ax->GetNbins() - (X1tmp - X0tmp), ax->GetNbins());
   else ax->SetRange(X0tmp - dX, X1tmp - dX);

   ax = TheHisto->GetYaxis();
   Int_t NbinsYtmp = ax->GetNbins();
   Int_t Y0tmp = ax->GetFirst();
   Int_t Y1tmp = ax->GetLast();
   step = TMath::Min(TMath::Max(1, (Int_t)(percent * (Y1tmp - Y0tmp))), NbinsYtmp / 2);
   step *= Sign;
   Y0tmp = TMath::Min(TMath::Max(Y0tmp + step, 1), Y1tmp - step);
   Y1tmp = TMath::Max(TMath::Min(Y1tmp - step, NbinsYtmp), Y0tmp);
   if (Y0tmp >= Y1tmp) Y0tmp = Y1tmp - 1;
   if (Sign > 0) dY = (Int_t)(Y0tmp + (Y1tmp - Y0tmp) * 0.5 - ax->FindBin(ppy));
   if ((Y0tmp - dY) < 0) ax->SetRange(0, Y1tmp - Y0tmp);
   else if ((Y1tmp - dY) > ax->GetNbins()) ax->SetRange(ax->GetNbins() - (Y1tmp - Y0tmp), ax->GetNbins());
   else ax->SetRange(Y0tmp - dY, Y1tmp - dY);

   Modified();
   Update();
   return;
}

//________________________________________________________________
void KVCanvas::DynamicZoomTH1(Int_t Sign, Int_t px, Int_t)
{
   // Zoom in or out of histogram with mouse wheel

   if (!fSelected) return;
   TH1* TheHisto = (TH1*) FindHisto();//fSelected;

   Double_t percent = 0.15 - Sign * 0.05;

   Int_t dX = 0;

   px = AbsPixeltoX(px);

   TAxis* ax = TheHisto->GetXaxis();
   Int_t NbinsXtmp = ax->GetNbins();
   Int_t X0tmp = ax->GetFirst();
   Int_t X1tmp = ax->GetLast();
   Int_t step = TMath::Min(TMath::Max(1, (Int_t)(percent * (X1tmp - X0tmp))), NbinsXtmp / 2);
   step *= Sign;
   X0tmp = TMath::Min(TMath::Max(X0tmp + step, 1), X1tmp - step);
   X1tmp = TMath::Max(TMath::Min(X1tmp - step, NbinsXtmp), X0tmp);
   if (X0tmp >= X1tmp) X0tmp = X1tmp - 1;
   if (Sign > 0) dX = (Int_t)(X0tmp + (X1tmp - X0tmp) * 0.5 - ax->FindBin(px));
   if ((X0tmp - dX) < 0) ax->SetRange(0, X1tmp - X0tmp);
   else if ((X1tmp - dX) > ax->GetNbins()) ax->SetRange(ax->GetNbins() - (X1tmp - X0tmp), ax->GetNbins());
   else ax->SetRange(X0tmp - dX, X1tmp - dX);


   Modified();
   Update();
   return;
}

double computeHistoMedian(TH1F * histo) {
  // Get the x axis
  TAxis * ax = histo->GetXaxis();
  // Get the number of bins
  const int nBins = histo->GetNbinsX();

  double cont[nBins];
  double x[nBins];

  // Loop over all the bins
  for (int bin=ax->GetFirst(); bin<=ax->GetLast(); bin++){
    x[bin] = histo->GetBinCenter(bin);
    cont[bin] = histo->GetBinContent(bin);
  }

  return  TMath::Median(nBins, x, cont);


}

double computePValue(TH1F * histo, double s) {
  // Get the x axis
  TAxis * ax = histo->GetXaxis();

  double integ = histo->Integral();
  double nAboveS = 0;

  // Loop over all the bins
  for (int bin=ax->GetFirst(); bin<=ax->GetLast(); bin++){
    if(histo->GetBinCenter(bin) > s) {
      nAboveS += histo->GetBinContent(bin);
    }
  }
  double old = nAboveS/integ;
  TString gName = "gaus_"+TString(histo->GetName());

  TF1 *gaus = new TF1(gName.Data(),"gaus",0.2,100);
  histo->Fit(gaus,"Q","",0.2,100);
  double pvalue = gaus->Integral(s,10)/gaus->Integral(-10,10);
  cout << "        p-value computation for S: " << s << " with histo: " << old
       << " with fit: " << pvalue << endl;
  return  pvalue;
}

//______________________________________________________________________________
void KVCanvas::HandleInput(EEventType event, Int_t px, Int_t py)
{
   // Handle Input Events.
   //
   //  Handle input events, like button up/down in current canvas.

   if (fFreezed) return;

   TPad*    pad;
   TPad*    prevSelPad = (TPad*) fSelectedPad;
   TObject* prevSelObj = fSelected;

   fPadSave = (TPad*)gPad;
   cd();        // make sure this canvas is the current canvas

   fEvent  = event;
   fEventX = px;
   fEventY = py;

   Int_t sign = 0;
   Bool_t sendOrder = true;

   if (fHasDisabledClasses && fSelected) {
      if (fDisabledClasses.Contains(fSelected->ClassName())) sendOrder = false;
   }

   if (fHasDisabledObject && fSelected) {
      if (fDisabledObjects.Contains(fSelected)) sendOrder = false;
   }

   switch (event) {

      case kMouseMotion:
         // highlight object tracked over
         pad = Pick(px, py, prevSelObj);
         if (!pad) return;

         EnterLeave(prevSelPad, prevSelObj);

         gPad = pad;   // don't use cd() we will use the current
         // canvas via the GetCanvas member and not via
         // gPad->GetCanvas

         if (sendOrder) fSelected->ExecuteEvent(event, px, py);

         RunAutoExec();

         if (fAgeOfEmpire && (fSelected->InheritsFrom("TH2"))) {
            TH2* TheHisto = (TH2*) FindHisto();//fSelected;

            Double_t size = 0.4 - 0.35 * fVenerMode;

            Int_t dX = 0;
            Int_t dY = 0;

            Double_t ppx = AbsPixeltoX(px);
            Double_t ppy = AbsPixeltoY(py);

            TAxis* ax = TheHisto->GetXaxis();
            Int_t X0 = ax->GetFirst();
            Int_t X1 = ax->GetLast();
            Int_t NbinsX = ax->GetNbins();
            px = ax->FindBin(ppx);

            Double_t ddX   = (X1 + X0) * 0.5 - px;
            Double_t distX = TMath::Abs(ddX) / (X1 - X0);
            if (distX >= 0.5) return;

            TAxis* ay = TheHisto->GetYaxis();
            Int_t Y0 = ay->GetFirst();
            Int_t Y1 = ay->GetLast();
            Int_t NbinsY = ay->GetNbins();
            py = ay->FindBin(ppy);

            Double_t ddY   = (Y1 + Y0) * 0.5 - py;
            Double_t distY = TMath::Abs(ddY) / (Y1 - Y0);
            if (distY >= 0.5) return;

            if ((distX <= size) && (distY <= size)) return;
            dX = TMath::Nint(ddX * (0.05 + 0.05 * fVenerMode));
            dY = TMath::Nint(ddY * (0.05 + 0.05 * fVenerMode));

            if (TMath::Abs(dX) < 1) dX = TMath::Sign(1., ddX);
            if (TMath::Abs(dY) < 1) dY = TMath::Sign(1., ddY);


            Bool_t up = false;
            if ((X0 - dX > 0) && (X1 - dX < NbinsX)) {
               ax->SetRange(X0 - dX, X1 - dX);
               up = true;
            }
            if ((Y0 - dY > 0) && (Y1 - dY < NbinsY)) {
               ay->SetRange(Y0 - dY, Y1 - dY);
               up = true;
            }
            if (up) {
               Modified();
               Update();
            }
//.........这里部分代码省略.........

TauAnalysisSelector::TauAnalysisSelector(const std::string& puWeight, bool isEmbedded,
                                         const std::string& embeddingWTauMuFile, const std::string& embeddingWTauMuPath,
                                         const std::string& mcTauMultiplicity, const std::string& mcTauMode,
                                         const std::string& embeddingNormalizationMode,
                                         TH1 *embeddingMuonWeights):
  BaseSelector(),
  //fMuons("Emb"),
  fGenTaus(isEmbedded ? "gentausOriginal" : "gentaus", true),
  fGenTausEmbedded("gentausEmbedded", true),
  fPuWeightName(puWeight),
  fIsEmbedded(isEmbedded),
  fEmbeddingWTauMuWeights(0),
  fMCTauMultiplicity(parseMCTauMultiplicity(mcTauMultiplicity)),
  fMCTauMode(parseMCTauMode(mcTauMode)),
  fEmbeddingNormalizationMode(parseEmbeddingNormalizationMode(embeddingNormalizationMode)),
  fEmbeddingMuonWeights(embeddingMuonWeights),
  cAll(fEventCounter.addCounter("All events")),
  //cElectronVeto(fEventCounter.addCounter("Electron veto")),
  cGeneratorWeight(fEventCounter.addCounter("Vis. pt weight")),
  cTauBRWeight(fEventCounter.addCounter("Tau BR weighting")),
  cGenTauFound(fEventCounter.addCounter("Gen tau found")),
  cTauMCSelection(fEventCounter.addCounter("Tau MC requirement")),
  cOnlyWMu(fEventCounter.addCounter("Only W->mu")),
  cWTauMuWeight(fEventCounter.addCounter("W->tau->mu weighting")),
  cTriggerEffWeight(fEventCounter.addCounter("Muon trigger eff weighting")),
  cIdEffWeight(fEventCounter.addCounter("Muon ID eff weighting")),
  cMuonWeight(fEventCounter.addCounter("Muon corr weighting (from argument)")),
  cJetSelection(fEventCounter.addCounter("Jet selection")),
  cPrimaryVertex(fEventCounter.addCounter("Primary vertex")),
  cAllTauCandidates(fEventCounter.addCounter(">= 1 tau candidate")),
  cPrePtCut(fEventCounter.addCounter("Pre Pt cut")),
  cDecayModeFinding(fEventCounter.addCounter("Decay mode finding")),
  cEtaCut(fEventCounter.addCounter("Eta cut")),
  cPtCut(fEventCounter.addCounter("Pt cut")),
  cLeadingTrackPtCut(fEventCounter.addCounter("Leading track pt")),
  cEcalCracks(fEventCounter.addCounter("ECAL fiducial: cracks")),
  cEcalGap(fEventCounter.addCounter("ECAL fiducial: gap")),
  cAgainstElectron(fEventCounter.addCounter("Against electron")),
  cAgainstMuon(fEventCounter.addCounter("Against muon")),
  cIsolation(fEventCounter.addCounter("Isolation")),
  cOneProng(fEventCounter.addCounter("One prong")),
  cRtau(fEventCounter.addCounter("Rtau")),
  cMuTrigger(fEventCounter.addCounter("Mu trigger"))
{
  if(isEmbedded && !embeddingWTauMuFile.empty()) {
    TFile *file = TFile::Open(embeddingWTauMuFile.c_str());
    TEfficiency *eff = dynamic_cast<TEfficiency *>(file->Get(embeddingWTauMuPath.c_str()));
    TAxis *xaxis = eff->GetPassedHistogram()->GetXaxis();
    fEmbeddingWTauMuWeights = new TH1F("weights", "weights", xaxis->GetNbins(), xaxis->GetBinLowEdge(xaxis->GetFirst()), xaxis->GetBinUpEdge(xaxis->GetLast()));
    fEmbeddingWTauMuWeights->SetDirectory(0);
    for(int bin=1; bin <= xaxis->GetNbins(); ++bin) {
      fEmbeddingWTauMuWeights->SetBinContent(bin, eff->GetEfficiency(bin));
      std::cout << "Bin " << bin << " low edge " << fEmbeddingWTauMuWeights->GetXaxis()->GetBinLowEdge(bin) << " value " << fEmbeddingWTauMuWeights->GetBinContent(bin) << std::endl;
    }
    fEmbeddingWTauMuWeights->SetBinContent(xaxis->GetNbins()+1, fEmbeddingWTauMuWeights->GetBinContent(xaxis->GetNbins()));
    file->Close();
  }

  if(isEmbedded) {
    fMuons.setIdEfficiencyName("efficiency_Run2011AB");
    fMuons.setTriggerEfficiencyName("efficiency_trigger");
  }
}