testShowGraphs.cxx

void testShowGraphs()
{

	gSystem->Load("../libData.so");

	const Long64_t kFirstEvent = 128;

	TFile fr("../data/dataDSR4/analysis_07_1.root");
	TTree *tr = (TTree*)fr.Get("atree");

	AEvent *revent = new AEvent();
	cout << tr->SetBranchAddress("Ach0.",&revent) << endl;

	TGraph *gr[10];

	cout << "warning" << endl;

	cout << tr->GetEntries() << endl;

	//loop over events
	for (Long64_t i = 0; i < 10; i++) {
		gr[i] = 0;
	cout << "warning 1" << endl;
		cout << i+kFirstEvent << endl;
//		tr->GetEntry(i+kFirstEvent);
		tr->GetEntry(i);
	cout << "warning 2" << endl;
		gr[i] = new TGraph(*revent->GetGraphSignal());
	}//for over events

	cout << "warning 3" << endl;

	TCanvas *c1 = new TCanvas("c1","test",10,10,1000,600);
	c1->Divide(3,2);

	for (Int_t k = 0; k < 6; k++) {
		c1->cd(k+1);
		gr[k]->Draw();
	}

//	c1->cd(2);
//	tr->Draw("gAmp.Draw()","","goff",1,124);
}