[u/mrichter/AliRoot.git] / PWG1 / PWG1README.txt



How to make a comparison using MC information:


0. Build the MC info tree

gSystem->Load("libPWG1.so")
AliGenInfoMaker *t = new AliGenInfoMaker("galice.root","genTracks.root",0,0)
t->Exec();


1. Build the reconstructed info tree


gSystem->Load("libPWG1.so");
//
AliRecInfoMaker *t2 = new AliRecInfoMaker("genTracks.root","cmpESDTracks.root","galice.root",0,0);
t2->Exec();


2. Make a chain of the information tree

gSystem->Load("libPWG1.so");

//GSI example
.x ~/rootlogon.C
.L /u/miranov/macroxrdproof64/AliXRDPROOFtoolkit.cxx+
 AliXRDPROOFtoolkit tool;
 TChain * chain = tool.MakeChain("comp.txt","ESDcmpTracks",0,1000)
 chain->Lookup();
 .L $ALICE_ROOT/PWG1/AliComparisonSelector.cxx+

 
3. 

a.) Use AliTreeDraw for fast prototyping the queries - analysis type:

gSystem->Load("libPWG1.so");
AliTreeDraw comp;
comp.SetTree(tree)


b.) Or use Selector

chain->Process("$ALICE_ROOT/PWG1/AliComparisonSelector.cxx+")


TFile f("Output.root");
Commit	Line	Data
36f9c31d	1
	2
	3	How to make a comparison using MC information:
	4
	5
	6	0. Build the MC info tree
	7
	8	gSystem->Load("libPWG1.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
	16	gSystem->Load("libPWG1.so");
	17	//
	18	AliRecInfoMaker *t2 = new AliRecInfoMaker("genTracks.root","cmpESDTracks.root","galice.root",0,0);
	19	t2->Exec();
	20
	21
	22	2. Make a chain of the information tree
	23
	24	gSystem->Load("libPWG1.so");
	25
	26	//GSI example
	27	.x ~/rootlogon.C
	28	.L /u/miranov/macroxrdproof64/AliXRDPROOFtoolkit.cxx+
	29	AliXRDPROOFtoolkit tool;
	30	TChain * chain = tool.MakeChain("comp.txt","ESDcmpTracks",0,1000)
	31	chain->Lookup();
	32	.L $ALICE_ROOT/PWG1/AliComparisonSelector.cxx+
	33
	34
	35	3.
	36
	37	a.) Use AliTreeDraw for fast prototyping the queries - analysis type:
	38
	39	gSystem->Load("libPWG1.so");
	40	AliTreeDraw comp;
	41	comp.SetTree(tree)
	42
	43
	44	b.) Or use Selector
	45
	46	chain->Process("$ALICE_ROOT/PWG1/AliComparisonSelector.cxx+")
	47
	48
	49	TFile f("Output.root");