PWGCF/FLOW/macros/plotQAflow.C

   1
   2 void plotQAflow(const char* filename="")
   3 {
   4  TFile f(filename,"read");
   5  TKey* key = f.GetListOfKeys()->At(0);
   6  if (!key) return;
   7  TObjArray* flowQA = dynamic_cast<TObjArray*>(f.Get(key->GetName()));
   8  if (!flowQA) return;
   9  TObjArray* before = dynamic_cast<TObjArray*>(flowQA->At(0));
  10  TObjArray* after = dynamic_cast<TObjArray*>(flowQA->At(1));
  11  for (Int_t i=0; i<before->GetEntries(); i++)
  12  {
  13    TH1* hbefore = dynamic_cast<TH1*>(before->At(i));
  14    TH1* hafter = dynamic_cast<TH1*>(after->At(i));
  15    TCanvas* canvas = new TCanvas(hbefore->GetName(), hbefore->GetTitle());
  16    canvas->SetLogy();
  17    TLegend* legend = new TLegend(0.8,0.8,1.0,1.0);
  18    hbefore->SetAxisRange(0.1,hbefore->GetBinContent(hbefore->GetMaximumBin()),"Y");
  19    hbefore->Draw();
  20    legend->AddEntry(hbefore,"before cuts","l");
  21    hafter->SetLineColor(2);
  22    legend->AddEntry(hafter,"after cuts","l");
  23    hafter->Draw("same");
  24    legend->Draw();
  25  }
  26 }