void testShowGraphs()
{

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

	const Long64_t kFirstEvent = 50;

	TFile fr("../data/dataDSR4/analysis_08_2.root");
//	TFile fr("../data/dataDSR4/analysis_07_8.root");
//	TFile fr("../data/dataTektronix/exp18.root");
//	TFile fr("../data/dataTektronix/analysisExp7.root");
	TTree *tr = (TTree*)fr.Get("atree");

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

	TGraph *gr[10];
	Double_t t10[10];
	Double_t t90[10];

//	cout << "warning" << endl;

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

	//loop over events
	for (Long64_t i = 0; i < 10; i++) {
		gr[i] = 0;
		t10[i] = 0;
		t90[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());
		t10[i] = revent->GetT_10();
		t90[i] = revent->GetT_90();

//		cout << t10[i] << "\t" << t90[i] << endl;
//		cout << revent->GetEdgeSlope() << endl;


	}//for over events

//	cout << "warning 3" << endl;

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

	TF1 *f1 = new TF1("f1name", "[0]+x*[1]");
//	TF1 *f1 = new TF1("pol1", );

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

		cout << t10[k] << "\t" << t90[k] << endl;
		f1->SetRange(t10[k], t90[k]);
		gr[k]->Fit(f1, "RQ");
	}

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