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C++ TGraphErrors::Set方法代码示例

本文整理汇总了C++中TGraphErrors::Set方法的典型用法代码示例。如果您正苦于以下问题:C++ TGraphErrors::Set方法的具体用法?C++ TGraphErrors::Set怎么用?C++ TGraphErrors::Set使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在TGraphErrors的用法示例。


在下文中一共展示了TGraphErrors::Set方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: bestFit

TGraphErrors bestFit(TTree *tree, TString alphaName, TString constTermName){
  Double_t alpha, constTerm;
  alphaName.ReplaceAll("-","_");
  constTermName.ReplaceAll("-","_");

  tree->SetBranchAddress(alphaName,&alpha);
  tree->SetBranchAddress(constTermName,&constTerm);

  //Long64_t nEntries=genTree->GetEntries();

  TGraphErrors graph;
  Int_t iPoint=0;

  tree->GetEntry(0);
  graph.SetPoint(0, constTerm, alpha);
  graph.SetPointError(0,0, 0);
  iPoint++;

  graph.Set(iPoint);
  tree->ResetBranchAddresses();
  graph.Draw("A P");
//   graph.SetFillColor(kBlue);
//   graph.SetLineColor(kYellow);
//   graph.GetXaxis()->SetTitle("Energy [GeV]");
//   graph.GetYaxis()->SetTitle("Additional smearing [%]");
  return graph;
}
开发者ID:alexeyfinkel,项目名称:ECALELF,代码行数:27,代码来源:mcmcDraw.C

示例2: g

TGraphErrors g(TTree *tree, TString alphaName, TString constTermName){
  Double_t alpha, constTerm;
  alphaName.ReplaceAll("-","_");
  constTermName.ReplaceAll("-","_");

  tree->SetBranchAddress(alphaName,&alpha);
  tree->SetBranchAddress(constTermName,&constTerm);

  //Long64_t nEntries=genTree->GetEntries();

  TGraphErrors graph;
  Int_t iPoint=0;

  tree->GetEntry(0);
  std::cout << alpha << "\t" << constTerm << std::endl;
  Double_t alpha2=alpha*alpha;
  Double_t const2=constTerm*constTerm;
  for(Double_t energy=20; energy<150; energy+=10){
    Double_t addSmearing = (sqrt(alpha2/energy+const2));
    
    graph.SetPoint(iPoint, energy, addSmearing);
    graph.SetPointError(iPoint,0, 0);
    iPoint++;
  }

  graph.Set(iPoint);
  tree->ResetBranchAddresses();
  graph.Draw("A L");
  graph.SetFillColor(kBlue);
  graph.SetLineColor(kYellow);
  graph.GetXaxis()->SetTitle("Energy [GeV]");
  graph.GetYaxis()->SetTitle("Additional smearing [%]");
  return graph;
}
开发者ID:alexeyfinkel,项目名称:ECALELF,代码行数:34,代码来源:mcmcDraw.C


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