void pedestal_width_amplitude(void)
{

 char string[256];
 Int_t layer=4;       // data from layer 4


//=========Macro generated from canvas: c3/c3
//=========  (Mon Apr 20 17:47:56 2015) by ROOT version5.34/09
   TCanvas *c3 = new TCanvas("c3", "c3",200,32,700,700);
   gStyle->SetOptFit(1);
   c3->Range(0,0,1,1);
   c3->SetFillColor(0);
   c3->SetBorderMode(0);
   c3->SetBorderSize(2);
   c3->SetGridx();
   c3->SetGridy();
   c3->SetLeftMargin(0.15);
   c3->SetRightMargin(0.15);
   c3->SetBottomMargin(0.15);
   c3->SetFrameBorderMode(0);

   gStyle->SetOptStat(kFALSE);
   gStyle->SetOptFit(kFALSE);
   // gStyle->SetOptFit(1111);
  
// ------------>Primitives in pad: c3_3
   
   TH1D *h2_samples_4_10 = new TH1D("h2_samples_4_10","",11,0,2.2);
   h2_samples_4_10->SetBinContent(1,1.199894);
   h2_samples_4_10->SetBinContent(2,1.207158);
   h2_samples_4_10->SetBinContent(3,1.217556);
   h2_samples_4_10->SetBinContent(4,1.226875);
   h2_samples_4_10->SetBinContent(5,1.277582);
   h2_samples_4_10->SetBinContent(6,1.338804);
   h2_samples_4_10->SetBinContent(7,1.381932);
   h2_samples_4_10->SetBinContent(8,1.464386);
   h2_samples_4_10->SetBinContent(9,1.580163);
   h2_samples_4_10->SetBinContent(10,1.770427);
   h2_samples_4_10->SetBinContent(11,1.909945);
   h2_samples_4_10->SetBinError(1,0.008603802);
   h2_samples_4_10->SetBinError(2,0.008334468);
   h2_samples_4_10->SetBinError(3,0.008691162);
   h2_samples_4_10->SetBinError(4,0.008653266);
   h2_samples_4_10->SetBinError(5,0.008867018);
   h2_samples_4_10->SetBinError(6,0.009636698);
   h2_samples_4_10->SetBinError(7,0.0100516);
   h2_samples_4_10->SetBinError(8,0.009991336);
   h2_samples_4_10->SetBinError(9,0.01093789);
   h2_samples_4_10->SetBinError(10,0.01292918);
   h2_samples_4_10->SetBinError(11,0.01315615);
   h2_samples_4_10->SetMinimum(1);
   h2_samples_4_10->SetMaximum(3);
   h2_samples_4_10->SetEntries(11);
   
   TF1 *fit = new TF1("fit","[0]+[1]*x*x",0,2.4);
   fit->SetFillColor(19);
   fit->SetFillStyle(0);
   fit->SetLineColor(2);
   fit->SetLineWidth(2);
   fit->SetChisquare(122.9222);
   fit->SetNDF(9);
   fit->GetXaxis()->SetLabelFont(42);
   fit->GetXaxis()->SetLabelSize(0.035);
   fit->GetXaxis()->SetTitleSize(0.035);
   fit->GetXaxis()->SetTitleFont(42);
   fit->GetYaxis()->SetLabelFont(42);
   fit->GetYaxis()->SetLabelSize(0.035);
   fit->GetYaxis()->SetTitleSize(0.035);
   fit->GetYaxis()->SetTitleFont(42);
   fit->SetParameter(0,1.16697);
   fit->SetParError(0,0.004058886);
   fit->SetParLimits(0,0,0);
   fit->SetParameter(1,0.1530768);
   fit->SetParError(1,0.002300519);
   fit->SetParLimits(1,0,0);
   h2_samples_4_10->GetListOfFunctions()->Add(fit);
   

   ci = TColor::GetColor("#000099");
   h2_samples_4_10->SetLineColor(ci);
   h2_samples_4_10->SetMarkerColor(2);
   h2_samples_4_10->SetMarkerStyle(20);
   h2_samples_4_10->GetXaxis()->SetTitle("Vover (V)");
   h2_samples_4_10->GetXaxis()->SetRange(1,12);
   h2_samples_4_10->GetXaxis()->SetNdivisions(505);
   h2_samples_4_10->GetXaxis()->SetLabelFont(42);
   h2_samples_4_10->GetXaxis()->SetLabelSize(0.05);
   h2_samples_4_10->GetXaxis()->SetTitleSize(0.05);
   h2_samples_4_10->GetXaxis()->SetTitleFont(42);
   h2_samples_4_10->GetYaxis()->SetTitle("Width (counts)");
   h2_samples_4_10->GetYaxis()->SetLabelFont(42);
   h2_samples_4_10->GetYaxis()->SetLabelSize(0.05);
   h2_samples_4_10->GetYaxis()->SetTitleSize(0.05);
   h2_samples_4_10->GetYaxis()->SetTitleOffset(1.5);
   h2_samples_4_10->GetYaxis()->SetTitleFont(42);
   h2_samples_4_10->GetZaxis()->SetLabelFont(42);
   h2_samples_4_10->GetZaxis()->SetLabelSize(0.035);
   h2_samples_4_10->GetZaxis()->SetTitleSize(0.035);
   h2_samples_4_10->GetZaxis()->SetTitleFont(42);
   h2_samples_4_10->Draw("");


   TH1D *h2_samples_4_20 = new TH1D("h2_samples_4_20","",11,0,2.2);
   h2_samples_4_20->SetBinContent(1,1.19675);
   h2_samples_4_20->SetBinContent(2,1.220366);
   h2_samples_4_20->SetBinContent(3,1.252845);
   h2_samples_4_20->SetBinContent(4,1.311393);
   h2_samples_4_20->SetBinContent(5,1.447083);
   h2_samples_4_20->SetBinContent(6,1.665245);
   h2_samples_4_20->SetBinContent(7,1.82228);
   h2_samples_4_20->SetBinContent(8,2.03347);
   h2_samples_4_20->SetBinContent(9,2.365167);
   h2_samples_4_20->SetBinContent(10,2.83616);
   h2_samples_4_20->SetBinContent(11,3.170636);
   h2_samples_4_20->SetBinError(1,0.008404909);
   h2_samples_4_20->SetBinError(2,0.008623235);
   h2_samples_4_20->SetBinError(3,0.00874654);
   h2_samples_4_20->SetBinError(4,0.009153502);
   h2_samples_4_20->SetBinError(5,0.01018942);
   h2_samples_4_20->SetBinError(6,0.01248719);
   h2_samples_4_20->SetBinError(7,0.01285668);
   h2_samples_4_20->SetBinError(8,0.014661);
   h2_samples_4_20->SetBinError(9,0.01777352);
   h2_samples_4_20->SetBinError(10,0.02127159);
   h2_samples_4_20->SetBinError(11,0.0244498);
   h2_samples_4_20->SetMinimum(1);
   h2_samples_4_20->SetMaximum(3);
   h2_samples_4_20->SetEntries(11);
   
   TF1 *fit = new TF1("fit","[0]+[1]*x*x",0,2.4);
   fit->SetFillColor(19);
   fit->SetFillStyle(0);
   fit->SetLineColor(2);
   fit->SetLineWidth(2);
   fit->SetChisquare(209.9795);
   fit->SetNDF(9);
   fit->GetXaxis()->SetLabelFont(42);
   fit->GetXaxis()->SetLabelSize(0.035);
   fit->GetXaxis()->SetTitleSize(0.035);
   fit->GetXaxis()->SetTitleFont(42);
   fit->GetYaxis()->SetLabelFont(42);
   fit->GetYaxis()->SetLabelSize(0.035);
   fit->GetYaxis()->SetTitleSize(0.035);
   fit->GetYaxis()->SetTitleFont(42);
   fit->SetParameter(0,1.145032);
   fit->SetParError(0,0.004378842);
   fit->SetParLimits(0,0,0);
   fit->SetParameter(1,0.4296834);
   fit->SetParError(1,0.003344592);
   fit->SetParLimits(1,0,0);
   h2_samples_4_20->GetListOfFunctions()->Add(fit);
   h2_samples_4_20->SetMarkerColor(4);
   h2_samples_4_20->SetMarkerStyle(21);
   h2_samples_4_20->Draw("same");

   TH1D *h2_samples_4_05 = new TH1D("h2_samples_4_05","",11,0,2.2);
   h2_samples_4_05->SetBinContent(1,1.200593);
   h2_samples_4_05->SetBinContent(2,1.200635);
   h2_samples_4_05->SetBinContent(3,1.206912);
   h2_samples_4_05->SetBinContent(4,1.203156);
   h2_samples_4_05->SetBinContent(5,1.233281);
   h2_samples_4_05->SetBinContent(6,1.238301);
   h2_samples_4_05->SetBinContent(7,1.235116);
   h2_samples_4_05->SetBinContent(8,1.270343);
   h2_samples_4_05->SetBinContent(9,1.31556);
   h2_samples_4_05->SetBinContent(10,1.369107);
   h2_samples_4_05->SetBinContent(11,1.407935);
   h2_samples_4_05->SetBinError(1,0.008676325);
   h2_samples_4_05->SetBinError(2,0.008204418);
   h2_samples_4_05->SetBinError(3,0.008481807);
   h2_samples_4_05->SetBinError(4,0.008581952);
   h2_samples_4_05->SetBinError(5,0.008652181);
   h2_samples_4_05->SetBinError(6,0.008921214);
   h2_samples_4_05->SetBinError(7,0.008865895);
   h2_samples_4_05->SetBinError(8,0.008768538);
   h2_samples_4_05->SetBinError(9,0.009211602);
   h2_samples_4_05->SetBinError(10,0.009995362);
   h2_samples_4_05->SetBinError(11,0.009547176);
   h2_samples_4_05->SetMinimum(1);
   h2_samples_4_05->SetMaximum(3);
   h2_samples_4_05->SetEntries(11);
   
   TF1 *fit = new TF1("fit","[0]+[1]*x*x",0,2.4);
   fit->SetFillColor(19);
   fit->SetFillStyle(0);
   fit->SetLineColor(2);
   fit->SetLineWidth(2);
   fit->SetChisquare(29.28425);
   fit->SetNDF(9);
   fit->GetXaxis()->SetLabelFont(42);
   fit->GetXaxis()->SetLabelSize(0.035);
   fit->GetXaxis()->SetTitleSize(0.035);
   fit->GetXaxis()->SetTitleFont(42);
   fit->GetYaxis()->SetLabelFont(42);
   fit->GetYaxis()->SetLabelSize(0.035);
   fit->GetYaxis()->SetTitleSize(0.035);
   fit->GetYaxis()->SetTitleFont(42);
   fit->SetParameter(0,1.187608);
   fit->SetParError(0,0.003902848);
   fit->SetParLimits(0,0,0);
   fit->SetParameter(1,0.04597433);
   fit->SetParError(1,0.001924654);
   fit->SetParLimits(1,0,0);
   h2_samples_4_05->GetListOfFunctions()->Add(fit);
   h2_samples_4_05->SetMarkerColor(1);
   h2_samples_4_05->SetMarkerStyle(22);
   h2_samples_4_05->Draw("same");
   

 
   TH1D *h2_samples_4_25 = new TH1D("h2_samples_4_25","",11,0,2.2);
   h2_samples_4_25->SetBinContent(1,1.200243);
   h2_samples_4_25->SetBinContent(2,1.202409);
   h2_samples_4_25->SetBinContent(3,1.20928);
   h2_samples_4_25->SetBinContent(4,1.20306);
   h2_samples_4_25->SetBinContent(5,1.217005);
   h2_samples_4_25->SetBinContent(6,1.205173);
   h2_samples_4_25->SetBinContent(7,1.193015);
   h2_samples_4_25->SetBinContent(8,1.21517);
   h2_samples_4_25->SetBinContent(9,1.239836);
   h2_samples_4_25->SetBinContent(10,1.24549);
   h2_samples_4_25->SetBinContent(11,1.26268);
   h2_samples_4_25->SetBinError(1,0.008681049);
   h2_samples_4_25->SetBinError(2,0.008210151);
   h2_samples_4_25->SetBinError(3,0.008639821);
   h2_samples_4_25->SetBinError(4,0.008616372);
   h2_samples_4_25->SetBinError(5,0.008394628);
   h2_samples_4_25->SetBinError(6,0.008609493);
   h2_samples_4_25->SetBinError(7,0.008372868);
   h2_samples_4_25->SetBinError(8,0.008429712);
   h2_samples_4_25->SetBinError(9,0.008765894);
   h2_samples_4_25->SetBinError(10,0.009086254);
   h2_samples_4_25->SetBinError(11,0.008874492);
   h2_samples_4_25->SetMinimum(1);
   h2_samples_4_25->SetMaximum(3);
   h2_samples_4_25->SetEntries(11);
   
   TF1 *fit = new TF1("fit","[0]+[1]*x*x",0,2.4);
   fit->SetFillColor(19);
   fit->SetFillStyle(0);
   fit->SetLineColor(2);
   fit->SetLineWidth(2);
   fit->SetChisquare(16.07031);
   fit->SetNDF(9);
   fit->GetXaxis()->SetLabelFont(42);
   fit->GetXaxis()->SetLabelSize(0.035);
   fit->GetXaxis()->SetTitleSize(0.035);
   fit->GetXaxis()->SetTitleFont(42);
   fit->GetYaxis()->SetLabelFont(42);
   fit->GetYaxis()->SetLabelSize(0.035);
   fit->GetYaxis()->SetTitleSize(0.035);
   fit->GetYaxis()->SetTitleFont(42);
   fit->SetParameter(0,1.196991);
   fit->SetParError(0,0.003867216);
   fit->SetParLimits(0,0,0);
   fit->SetParameter(1,0.01266473);
   fit->SetParError(1,0.001838095);
   fit->SetParLimits(1,0,0);
   h2_samples_4_25->GetListOfFunctions()->Add(fit);
   h2_samples_4_25->SetMarkerColor(3);
   h2_samples_4_25->SetMarkerStyle(23);
   h2_samples_4_25->Draw("same");
   
   // add Legend

   sprintf (string,"Layer = %d\n",layer);
   printf("string=%s",string);

  TLegend *leg = new TLegend(0.2,0.65,0.5,0.9,string);
   leg->AddEntry(h2_samples_4_20,"Amplitude x 2","p");
   leg->AddEntry(h2_samples_4_10,"Amplitude x 1","p");
   leg->AddEntry(h2_samples_4_05,"Amplitude x 0.5","p");
   leg->AddEntry(h2_samples_4_25,"Amplitude x 0.25","p");
   leg->Draw();


   sprintf (string,"pedestal_width_amplitude.pdf");
   c3->SaveAs(string);

}