Example macro to read AOD with HF candidates (Andrea)

[u/mrichter/AliRoot.git] / PWG0 / AliCorrection.cxx

diff --git a/PWG0/AliCorrection.cxx b/PWG0/AliCorrection.cxx
index 46b76c363a243fee71ca80c4b0d58bec53f50830..c4739e17365f8a433ce2aa6873d891939a9a93a2 100644 (file)
--- a/PWG0/AliCorrection.cxx
+++ b/PWG0/AliCorrection.cxx
@@ -30,7 +30,7 @@ AliCorrection::AliCorrection() : TNamed(),
 }
 
 //____________________________________________________________________
-AliCorrection::AliCorrection(const Char_t* name, const Char_t* title, const char* analysis) : TNamed(name, title),
+AliCorrection::AliCorrection(const Char_t* name, const Char_t* title, AliPWG0Helper::AnalysisMode analysisMode) : TNamed(name, title),
   fEventCorr(0),
   fTrackCorr(0)
 {
@@ -40,14 +40,15 @@ AliCorrection::AliCorrection(const Char_t* name, const Char_t* title, const char
   Int_t nBinsPt = 0;
 
   // different binnings, better solution could be anticipated...
-  if (TString(analysis).CompareTo("tpc", TString::kIgnoreCase) == 0)
+  if (analysisMode == AliPWG0Helper::kTPC || analysisMode == AliPWG0Helper::kTPCITS)
   {
     static Float_t binLimitsPtTmp[] = {0.0, 0.05, 0.1, 0.125, 0.15, 0.175, 0.2, 0.225, 0.25, 0.275, 0.3, 0.325, 0.35, 0.375, 0.4, 0.425, 0.45, 0.475, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2.0, 5.0, 10.0, 100.0};
     binLimitsPt = (Float_t*) binLimitsPtTmp;
     nBinsPt = 28;
-  } else if (TString(analysis).CompareTo("spd", TString::kIgnoreCase) == 0)
+  } 
+  else if (analysisMode == AliPWG0Helper::kSPD)
   {
-    static Float_t binLimitsPtTmp[] = {-0.5, 0.5};
+    static Float_t binLimitsPtTmp[] = {-0.5, 100.0};
     binLimitsPt = (Float_t*) binLimitsPtTmp;
     nBinsPt = 1;
   }
@@ -184,7 +185,7 @@ void AliCorrection::Divide()
   fEventCorr->Divide();
   fTrackCorr->Divide();
 
-  Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 9.9);
+  Int_t emptyBins = fTrackCorr->CheckEmptyBins(-9.99, 9.99, -0.79, 0.79, 0.3, 4.9);
   printf("INFO: In the central region the track correction of %s has %d empty bins\n", GetName(), emptyBins);
 }
 
@@ -284,6 +285,39 @@ void AliCorrection::DrawHistograms(const Char_t* name)
     fTrackCorr->DrawHistograms(Form("%s track", name));
 }
 
+void AliCorrection::DrawOverview(const char* canvasName)
+{
+  // draw projection of the corrections
+  //   to the 3 axis of fTrackCorr and 2 axis of fEventCorr
+
+  TString canvasNameTmp(GetName());
+  if (canvasName)
+    canvasNameTmp = canvasName;
+
+  TCanvas* canvas = new TCanvas(canvasNameTmp, canvasNameTmp, 1200, 800);
+  canvas->Divide(3, 2);
+
+  if (fTrackCorr) {
+    canvas->cd(1);
+    fTrackCorr->Get1DCorrectionHistogram("x", 0.3, 5, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
+
+    canvas->cd(2);
+    fTrackCorr->Get1DCorrectionHistogram("y", 0.3, 5, 0, 0)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
+
+    canvas->cd(3);
+    fTrackCorr->Get1DCorrectionHistogram("z", 0, -1, -1, 1)->DrawCopy()->GetYaxis()->SetRangeUser(0, 10);
+  }
+
+  if (fEventCorr)
+  {
+    canvas->cd(4);
+    fEventCorr->Get1DCorrectionHistogram("x")->DrawCopy();
+
+    canvas->cd(5);
+    fEventCorr->Get1DCorrectionHistogram("y")->DrawCopy()->GetXaxis()->SetRangeUser(0, 30);
+  }
+}
+
 //____________________________________________________________________
 void AliCorrection::SetCorrectionToUnity()
 {
@@ -313,3 +347,52 @@ void AliCorrection::Multiply()
   if (fTrackCorr)
     fTrackCorr->Multiply();
 }
+
+//____________________________________________________________________
+void AliCorrection::Scale(Double_t factor)
+{
+  // scales the two contained corrections
+
+  fEventCorr->Scale(factor);
+  fTrackCorr->Scale(factor);
+}
+
+//____________________________________________________________________
+void AliCorrection::PrintInfo(Float_t ptCut)
+{
+  // prints some stats
+
+  TH3* measured = GetTrackCorrection()->GetMeasuredHistogram();
+  TH3* generated = GetTrackCorrection()->GetGeneratedHistogram();
+
+  TH2* measuredEvents = GetEventCorrection()->GetMeasuredHistogram();
+  TH2* generatedEvents = GetEventCorrection()->GetGeneratedHistogram();
+
+  Printf("AliCorrection::PrintInfo: Whole phasespace:");
+
+  Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %1.f, events generated %1.f", measured->Integral(), generated->Integral(), measuredEvents->Integral(), generatedEvents->Integral());
+
+  Printf("AliCorrection::PrintInfo: Values in |eta| < 0.8, |vtx-z| < 10 and pt > %.2f:", ptCut);
+
+  Float_t tracksM = measured->Integral(measured->GetXaxis()->FindBin(-9.9), measured->GetXaxis()->FindBin(9.9), measured->GetYaxis()->FindBin(-0.79), measured->GetYaxis()->FindBin(0.79), measured->GetZaxis()->FindBin(ptCut), measured->GetZaxis()->GetNbins());
+  Float_t tracksG = generated->Integral(generated->GetXaxis()->FindBin(-9.9), generated->GetXaxis()->FindBin(9.9), generated->GetYaxis()->FindBin(-0.79), generated->GetYaxis()->FindBin(0.79), generated->GetZaxis()->FindBin(ptCut), generated->GetZaxis()->GetNbins());
+
+  Float_t eventsM = measuredEvents->Integral(measuredEvents->GetXaxis()->FindBin(-9.9), measuredEvents->GetXaxis()->FindBin(9.9), 1, measuredEvents->GetNbinsY());
+  Float_t eventsG = generatedEvents->Integral(generatedEvents->GetXaxis()->FindBin(-9.9), generatedEvents->GetXaxis()->FindBin(9.9), 1, generatedEvents->GetNbinsY());
+
+  Printf("tracks measured: %.1f tracks generated: %.1f, events measured: %1.f, events generated %1.f", tracksM, tracksG, eventsM, eventsG);
+
+  if (tracksM > 0)
+    Printf("Effective average correction factor for TRACKS: %.3f", tracksG / tracksM);
+  if (eventsM > 0)
+  Printf("Effective average correction factor for EVENTS: %.3f", eventsG / eventsM);
+
+  if (eventsM > 0 && eventsG > 0)
+  {
+    // normalize to number of events;
+    tracksM /= eventsM;
+    tracksG /= eventsG;
+
+    Printf("%.2f tracks/event measured, %.2f tracks/event after correction --> effective average correction factor is %.3f (pt cut %.2f GeV/c)", tracksM, tracksG, tracksG / tracksM, ptCut);
+  }
+}