// This macro is to be used on a root file produced with the
// event.C selector.


#include "StandardLabels.C"

void NdarkhitsSum3(void)
{
	TColor::CreateColorWheel();

	char fname[256];
	sprintf(fname,"darkhits.root");
	TFile *f = new TFile(fname);
	TH1D *NdarkhitsSum3 = (TH1D*)gROOT->FindObject("NdarkhitsSum3");	

	TCanvas *c1 = new TCanvas();
	c1->SetTicks();
	c1->SetGrid();
	
	NdarkhitsSum3->SetStats(0);
	NdarkhitsSum3->GetXaxis()->SetRangeUser(-0.5, 30.5);
	NdarkhitsSum3->SetFillColor(kSpring-4);
	NdarkhitsSum3->SetFillStyle(3000);
	NdarkhitsSum3->SetLineColor(kBlack);
	NdarkhitsSum3->SetLineWidth(2.0);
	NdarkhitsSum3->Draw();
	
	double xmean = NdarkhitsSum3->GetMean();
	double ymax = NdarkhitsSum3->GetMaximum();
	char str[256];
	sprintf(str, "mean: %3.1f PE", xmean);
	TPaveText *txt = new TPaveText(20.0, 0.5*ymax, 30.0, 0.75*ymax);
	txt->AddText(str);
	txt->Draw();
	
	TLine *l = new TLine(xmean, 0.0, xmean, 1.05*ymax);
	l->SetLineStyle(2);
	l->SetLineWidth(4);
	l->Draw();

	StandardLabels1D(NdarkhitsSum3, "From mcsmear");

	c1->SaveAs("NdarkhitsSum3.png");
	c1->SaveAs("NdarkhitsSum3.pdf");
}