PWGPP/PWGPPREADME.txt

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   3 How to make a comparison using MC information:
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   5
   6 0. Build the MC info tree
   7 gSystem->Load("libANALYSIS.so");
   8 gSystem->Load("libPWGPP.so")
   9 AliGenInfoMaker *t = new AliGenInfoMaker("galice.root","genTracks.root",0,0)
  10 t->Exec();
  11
  12
  13 1. Build the reconstructed info tree
  14
  15 gSystem->Load("libANALYSIS.so");
  16 gSystem->Load("libPWGPP.so");
  17 //
  18 AliRecInfoMaker *t2 = new AliRecInfoMaker("genTracks.root","cmpESDTracks.root","galice.root",0,0);
  19 t2->Exec();
  20
  21
  22
  23 2. Make a chain of the information tree
  24 gSystem->Load("libANALYSIS.so");
  25
  26 gSystem->Load("libPWGPP.so");
  27
  28 //GSI example
  29 .x ~/rootlogon.C
  30  gSystem->AddIncludePath("-I$ALICE_ROOT/TPC/macros")
  31   gROOT->LoadMacro("$ALICE_ROOT/TPC/macros/AliXRDPROOFtoolkit.cxx+")
  32
  33  AliXRDPROOFtoolkit tool;
  34  TChain * chain = tool.MakeChain("cmp.txt","ESDcmpTracks",0,1000)
  35  chain->Lookup();
  36  .L $ALICE_ROOT/PWGPP/AliComparisonSelector.cxx+
  37
  38
  39 3.
  40
  41 a.) Use AliTreeDraw for fast prototyping the queries - analysis type:
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  43 gSystem->Load("libPWGPP.so");
  44 AliTreeDraw comp;
  45 comp.SetTree(tree)
  46
  47
  48 b.) Or use Selector
  49
  50 chain->Process("$ALICE_ROOT/PWGPP/AliComparisonSelector.cxx+")
  51
  52
  53 TFile f("Output.root");