//#include "TCanvas.h"

void histCorr(const Bool_t can1 = 1, const Bool_t can2 = 1)
{
	gSystem->Load("../libData.so");
	TFile *f = new TFile("../data/dataDSR4/analysis_07_8.root");
	TTree *t = (TTree*)f->Get("atree");

	if (can1) {
		TCanvas *c1 = new TCanvas("c1", "Correlation pictures: delta t from CFD vs something");
		c1->Divide(2,2);

		TH2F *h1 = new TH2F("h1", "Time difference between two channels vs an integral of the first channel",125, -50., 50., 125, 0., 5e-9);
		TH2F *h2 = new TH2F("h2", "Time difference between two channels vs an integral of the second channel",125, -50., 50.,125, 0e-9, 5e-9);
		TH2F *h3 = new TH2F("h3", "Time difference between two channels vs amplitude of the first channel",125, -100., 100., 125, 0., 0.5);
		TH2F *h4 = new TH2F("h4", "Time difference between two channels vs amplitude of the second channel",125, -100., 100., 125, 0., 0.5);

		c1->cd(1);
		t->Draw("Ach0.fChargeCFD : ( Ach0.fTimeCFD - Ach2.fTimeCFD ) >> h1","","col");
		//x
		h1->GetXaxis()->SetTitle("\\Delta \\tau_{0-2}  [ns]");
		h1->GetXaxis()->CenterTitle();
		//y
		h1->GetYaxis()->SetTitle("Q_{0} [C]");
		h1->GetYaxis()->CenterTitle();

		c1->cd(2);
		t->Draw("Ach2.fChargeCFD : ( Ach0.fTimeCFD - Ach2.fTimeCFD ) >> h2","","col");
		h2->GetXaxis()->SetTitle("\\Delta \\tau_{0-2}  [ns]");
		h2->GetXaxis()->CenterTitle();
		//y
		h2->GetYaxis()->SetTitle("Q_{2} [C]");
		h2->GetYaxis()->CenterTitle();

		c1->cd(3);
		t->Draw("Ach0.fAmpMax: ( Ach0.fTimeCFD - Ach2.fTimeCFD ) >> h3","","col");
		//x
		h3->GetXaxis()->SetTitle("\\Delta \\tau_{0-2}  [ns]");
		h3->GetXaxis()->CenterTitle();
		//y
		h3->GetYaxis()->SetTitle("Max_ampl_{0} [V]");
		h3->GetYaxis()->CenterTitle();

		c1->cd(4);
		t->Draw("Ach2.fAmpMax: ( Ach0.fTimeCFD - Ach2.fTimeCFD ) >> h4","","col");
		//x
		h4->GetXaxis()->SetTitle("\\Delta \\tau_{0-2}  [ns]");
		h4->GetXaxis()->CenterTitle();
		//y
		h4->GetYaxis()->SetTitle("Max_ampl_{2} [V]");
		h4->GetYaxis()->CenterTitle();
		
		c1->Show();
		c1->Update();
	}

	if (can2) {
		TCanvas *c2 = new TCanvas("c2", "Correlation pictures: Integrals and amplitudes");
		c2->Divide(1,2);

		TH2F *h5 = new TH2F("h5", "Integral of the first channel vs integral of the second channel", 300, 0., 2e-9, 300, 0., 2e-9);
		TH2F *h6 = new TH2F("h6", "Amplitude of the first channel vs amplitude of the second channel", 300, 10, 1e-10, 300, 10, 1e-10);

		c2->cd(1);
		t->Draw("Ach0.fChargeCFD : Ach2.fChargeCFD >> h5","","col");
		//x
		h5->GetXaxis()->SetTitle("Q_{2} [C]");
		h5->GetXaxis()->CenterTitle();
		//y
		h5->GetYaxis()->SetTitle("Q_{0} [C]");
		h5->GetYaxis()->CenterTitle();

		c2->cd(2);
		t->Draw("Ach0.fAmpMax : Ach2.fAmpMax >> h6","","col");
		//x
		h6->GetXaxis()->SetTitle("Max_ampl_{2} [V]");
		h6->GetXaxis()->CenterTitle();
		//y
		h6->GetYaxis()->SetTitle("Max_ampl_{0} [V]");
		h6->GetYaxis()->CenterTitle();
	
		c2->Update();
	}

}