[u/mrichter/AliRoot.git] / RALICE / icepack / iceconvert / macros / open.cc

////////////////////////////////////////////////////////
// Macro to attach and open an IceCube event file
// for interactive investigation.
//
// To run this macro, just do
//
// root> .x open.cc
//
//--- NvE 18-jun-2004 Utrecht University
/////////////////////////////////////////////
{
 gSystem->Load("ralice");
 gSystem->Load("icepack");

 // Access to the input data
 TFile* f=new TFile("events.root");
 TTree* data=(TTree*)f->Get("T");

 // Provide overview of Tree contents
 cout << endl;
 data->Print();

 // Define a pointer for an event
 IceEvent* evt=0;

 // Branch in the tree for the event input
 data->SetBranchAddress("IceEvent",&evt);

 cout << endl;
 cout << " *READ* nentries : " << data->GetEntries() << endl;
 cout << endl;

 cout << " Use data->GetEntry(i) to load the i-th entry." << endl;
 cout << " The event object is called evt " << endl;
 cout << endl;
}
Commit	Line	Data
f67e2651	1	////////////////////////////////////////////////////////
	2	// Macro to attach and open an IceCube event file
	3	// for interactive investigation.
	4	//
	5	// To run this macro, just do
	6	//
	7	// root> .x open.cc
	8	//
	9	//--- NvE 18-jun-2004 Utrecht University
	10	/////////////////////////////////////////////
	11	{
	12	gSystem->Load("ralice");
	13	gSystem->Load("icepack");
	14
	15	// Access to the input data
	16	TFile* f=new TFile("events.root");
	17	TTree* data=(TTree*)f->Get("T");
	18
	19	// Provide overview of Tree contents
	20	cout << endl;
	21	data->Print();
	22
	23	// Define a pointer for an event
	24	IceEvent* evt=0;
	25
	26	// Branch in the tree for the event input
	27	data->SetBranchAddress("IceEvent",&evt);
	28
	29	cout << endl;
	30	cout << " READ nentries : " << data->GetEntries() << endl;
	31	cout << endl;
	32
	33	cout << " Use data->GetEntry(i) to load the i-th entry." << endl;
	34	cout << " The event object is called evt " << endl;
	35	cout << endl;
	36	}