C++ TObject::Delete方法代码示例

// specific function for short vectors
TH1* makeDescantHisto(const vector<short> &v, const char *hisName = "vectorHis")
{
  TObject *obj = gROOT->FindObjectAny(hisName);
  if (obj) {
    obj->Delete();
  }
  TH1 *his = new TH1S(hisName, hisName, v.size()-8, 0, v.size()-8);
  
  for (Int_t i=0; i < v.size(); i++) {
     // reorder so that samples 0-7 are: 7,6,1,0,3,2,5,4
     //                                  0,1,2,3,4,5,6,7
     // pairwise swap: 0->1,1->0 => i+1 (1,2) => i+1-(2*i%2) (1,0)
     // 67,01,32,45: shift all by +2, except for the last pair which need to be shifted by -6
     Int_t reordered = i-2;
     reordered = reordered+1-2*(reordered%2);
     if(reordered%8 < 6) {
         //std::cout<<i<<" => "<<reordered+2<<std::endl;
        his->SetBinContent(reordered+3, v.at(i));
     } else {
         //std::cout<<i<<" => "<<reordered-6<<std::endl;
        his->SetBinContent(reordered-5, v.at(i));
     }
  }

  return his;
}

void KVCanvas::ProfileX(TH2* hh)
{
   TObject* pfx = 0;
   if ((pfx = FindObject(Form("%s_pfx", hh->GetName())))) pfx->Delete();
   hh->ProfileX("_pfx", 1, -1, "i,d,same");
   if ((pfx = FindObject(Form("%s_pfx", hh->GetName()))))((TProfile*)pfx)->SetLineColor(kBlack);
   Modified();
   Update();
}

U* makeHistoCommon(const vector<T> &v, const char *hisName = "vectorHis")
{
  TObject *obj = gROOT->FindObjectAny(hisName);
  if (obj) {
    obj->Delete();
  }
  U *his = new U(hisName, hisName, v.size(), 0, v.size());
  
  for (Int_t i=0; i < v.size(); i++) {
    his->SetBinContent(i+1, v.at(i));
  }

  return his;
}

void KVCanvas::ProfileY(TH2* hh)
{
   TObject* obj = 0;
   if ((obj = gROOT->FindObject(Form("%s_pfy", hh->GetName())))) obj->Delete();
   TProfile* pfy = hh->ProfileY("_pfy", 1, -1, "i");
   TGraphErrors* gr = gHistoManipulator->MakeGraphFrom(pfy);
   pfy->Delete();
   TGraph* gg = gHistoManipulator->PermuteAxis(gr);
   gr->Delete();
   gg->SetName(Form("%s_pfy", hh->GetName()));
   gg->SetLineColor(kBlack);
   gg->Draw("PEZ");
   Modified();
   Update();
}

TGraph* makeGraph(const vector<T> &v, const char *name = "vectorGraph")
{
  TObject *obj = gROOT->FindObjectAny(name);
  if (obj) {
    obj->Delete();
  }
  TGraph *graph = new TGraph(v.size());
  graph->SetNameTitle(name, name);

  for (Int_t i=0; i < v.size(); i++) {
    graph->SetPoint(i, i, v.at(i));
  }

  return graph;
}

//.........这里部分代码省略.........
	myfile << BOTHfinal_T;
myfile << "\t S/sqrt(B): ";
myfile << sig2ncut3;
myfile << "\t S: ";
myfile << sigcut3;
myfile << "\t B: ";
myfile << bkgd3;
myfile << "\t EFF: ";
myfile << sigEFF3;
myfile << "\t REJ: ";
myfile << bkgdREJ3;
myfile << "\tmax ratio w/ S>3\n\n";
	
	
	
	myfile << Local_Max_T;
myfile << "\t S/sqrt(B): ";
myfile << sig2ncut4;
myfile << "\t S: ";
myfile << sigcut4;
myfile << "\t B: ";
myfile << bkgd4;
myfile << "\t EFF: ";
myfile << sigEFF4;
myfile << "\t REJ: ";
myfile << bkgdREJ4;
myfile << "\tmax ratio in specified range\n\n";
	
	
	int pointstorage_size = pointstorage_signalEFF.size();
	for (int sindex = 0; sindex < pointstorage_size; ++sindex){
		myfile << "\n\n";
myfile << "Opt: ";
myfile << opt_store[sindex];
myfile << "\tnumberSIGevents:";
myfile << pointstorage_sigcut[sindex];
myfile << "\tSignalEFF: ";
myfile << pointstorage_signalEFF[sindex];
myfile << "\tBackgdREJ: ";
myfile << pointstorage_backgdREJ[sindex];
myfile << "\tSig2Noise: ";
myfile << pointstorage_signal2noise[sindex];
	} 
	
	myfile.close();
	

	const int vectorsize = signalEFF.size();
	float signalEFF_forplot[vectorsize];
	float backgdREJ_forplot[vectorsize];
	float signal2noise_forplot[vectorsize];
	for (int vindex = 0; vindex < vectorsize; ++vindex){
		signalEFF_forplot[vindex] = signalEFF[vindex];
		backgdREJ_forplot[vindex] = backgdREJ[vindex];
		//backgdREJ_forplot[vindex] = 1;
		signal2noise_forplot[vindex] = signal2noise[vindex];
	}

TCanvas *c1 = new TCanvas("c1","Eff and Rej",200,10,700,500);
zzgr = new TGraph(vectorsize, backgdREJ_forplot, signalEFF_forplot);
//zzgr->SetLineColor(2);
//zzgr->SetLineWidth(4);
zzgr->SetMarkerColor(4);
zzgr->SetMarkerStyle(21);
zzgr->SetMarkerSize(.3);
zzgr->SetTitle("Sig Eff vs Bkgd Rej");
zzgr->GetXaxis()->SetTitle("Background Rejection");
zzgr->GetYaxis()->SetTitle("Signal Efficiency");
//zzgr->GetXaxis()->SetRangeUser(0,80);
//zzgr->GetYaxis()->SetRangeUser(0,0.1);
//zzgr->Draw("ACP");
zzgr->Draw("AP");
c1 -> SaveAs("EFFvsREJ_"+OptimizedVariable+"_"+LEPTON_TYPE+".png");


TCanvas *c2 = new TCanvas("c2","Eff and Sig to Noise",200,10,700,500);
zzgr1 = new TGraph(vectorsize, signal2noise_forplot, signalEFF_forplot);
//zzgr1->SetLineColor(2);
//zzgr1->SetLineWidth(4);
zzgr1->SetMarkerColor(4);
zzgr1->SetMarkerStyle(21);
zzgr1->SetMarkerSize(.3);
zzgr1->SetTitle("Sig Eff vs Sig/sqrt(S+B)");
zzgr1->GetXaxis()->SetTitle("Signal/sqrt(Signal+Bkgd)");
zzgr1->GetYaxis()->SetTitle("Signal Efficiency");
//zzgr1->GetXaxis()->SetRangeUser(0,80);
//zzgr1->GetYaxis()->SetRangeUser(0,0.1);
//zzgr1->Draw("ACP");
zzgr1->Draw("AP");
c2 -> SaveAs("EFFvsSOSB_"+OptimizedVariable+"_"+LEPTON_TYPE+".png");

TIter next(gDirectory->GetList()); //Deletes histograms to avoid memory leaks
       TObject* obj;
       while(obj= (TObject*)next()){
               if(obj->InheritsFrom(TH1::Class())){
                       obj->Delete();
               }
       }

}