{
   const Int_t N1 = 10;
   const Int_t N2 = 6;
   Int_t NMax, in;
   Float_t x1[N1], x2[N2], y1[N1], y2[N2],x3[N1], x4[N2], y3[N1], y4[N2], step, dir;

   y1[0] = 5.0;
   y2[0] = 0.1;
   y3[0] = 2.6;
   y4[0] = 0.7;
   step  = 0.5;
   x1[0]  = 0.0;
   x2[0]  = 1.5;
   x3[0]  = 0.5;
   x4[0]  = 1.0;

   dir = 1.0;
   for (in=1; in<N1; in++) {
      if (in>N1/2) dir = -1.0;
      x1[in]  = (Float_t) in;
      y1[in] = y1[in-1]+(2.0*step*dir);
   }
   dir = 1.0;
   for (in=1; in<N2; in++) {
      if (in<N2/2) dir = -1.0;
      else dir = 1.0;
      x2[in]   = in+1.5;
      y2[in]   = y2[in-1]+(-0.1*step*dir);
   }
   dir = 1.0;
   for (in=1; in<N2; in++) {
      if (in<N2/2) dir = -1.0;
      else dir = 1.0;
      x3[in]   = in+2.5;
      y3[in]   = y3[in-1]+(0.3*step*dir);
   }
   dir = 1.0;
   for (in=1; in<N2; in++) {
      if (in<N2/2) dir = -1.0;
      else dir = 1.0;
      x4[in]   = in+3.5;
      y4[in]   = y4[in-1]+(-0.5*step*dir);
   }

   TGraph *inputSpec  = new TGraph(N1, x1, y1);
   TGraph *inputSpec2 = new TGraph(N2, x2, y2);
   TGraph *inputSpec3 = new TGraph(N2, x3, y3);
   TGraph *inputSpec4 = new TGraph(N2, x4, y4);
   
   inputSpec2->GetYaxis()->SetLabelOffset(0.04);
   inputSpec3->GetYaxis()->SetLabelOffset(0.08);
   inputSpec2->GetYaxis()->SetLabelSize(0.02);
   inputSpec3->GetYaxis()->SetLabelSize(0.02);
   inputSpec4->GetYaxis()->SetLabelSize(0.02);

   TH1F *h1 = inputSpec->GetHistogram();
   h1->Scale(0.1);
   h1->SetXTitle("X title");
   h1->SetYTitle("Y title");

   TCanvas *c1 = new TCanvas("c1", "Intensity of LED 1",0,  0, 800, 600);
   TPad *pad1 = new TPad("pad1","",0,0,1,1);
   TPad *pad2 = new TPad("pad2","",0,0,1,1);
   pad2->SetFillStyle(4000);
   pad2->SetFrameFillStyle(0);
   TPad *pad3 = new TPad("pad3","",0,0,1,1);
   pad3->SetFillStyle(4000);
   pad3->SetFrameFillStyle(0);
   TPad *pad4 = new TPad("pad4","",0,0,1,1);
   pad4->SetFillStyle(4000);
   pad4->SetFrameFillStyle(0);
   pad1->Draw();
   pad1->cd();

   inputSpec->SetMarkerStyle(29);
   inputSpec->SetMarkerColor(kBlack+2);
   inputSpec->SetLineColor(kBlack);
   inputSpec->GetXaxis()->SetLimits(0.,9.);
    
   inputSpec->Draw("ALP");

   TH1F *h2 = inputSpec2->GetHistogram();
   TAxis *Ay2 = h2->GetYaxis();
   Ay2->SetRangeUser(0.0, 0.5);
   TH1F *h3 = inputSpec3->GetHistogram();
   TAxis *Ay3 = h3->GetYaxis();
   Ay3->SetRangeUser(0.0, 10);
   TH1F *h4 = inputSpec4->GetHistogram();
   TAxis *Ay4 = h4->GetYaxis();
   Ay4->SetRangeUser(0.0, 5);

   pad2->Draw();
   pad2->cd();
    
   inputSpec2->SetMarkerStyle(29);
   inputSpec2->SetMarkerColor(kRed+2);
   inputSpec2->SetLineColor(kRed);
   inputSpec2->GetXaxis()->SetLimits(0.,9.);
   inputSpec2->GetXaxis()->SetAxisColor(kRed);
   inputSpec2->GetXaxis()->SetLabelColor(kRed);
   inputSpec2->GetYaxis()->SetAxisColor(kRed);
   inputSpec2->GetYaxis()->SetLabelColor(kRed);  
   inputSpec2->Draw("LPAY+");
   pad3->Draw();
   pad3->cd();
    
   inputSpec3->SetMarkerStyle(29);
   inputSpec3->SetMarkerColor(kGreen+2);
   inputSpec3->SetLineColor(kGreen);
   inputSpec3->GetXaxis()->SetLimits(0.,9.);
   inputSpec3->GetXaxis()->SetAxisColor(kGreen);
   inputSpec3->GetXaxis()->SetLabelColor(kGreen);
   inputSpec3->GetYaxis()->SetAxisColor(kGreen);
   inputSpec3->GetYaxis()->SetLabelColor(kGreen);
   inputSpec3->Draw("LPAY+");
    
   pad4->Draw();
   pad4->cd();
    
   inputSpec4->SetMarkerStyle(29);
   inputSpec4->SetMarkerColor(kBlue+2);
   inputSpec4->SetLineColor(kBlue);
   //mg2->Add(inputSpec4,"LPY+");
   inputSpec4->GetXaxis()->SetLimits(0.,9.);
   inputSpec4->GetXaxis()->SetAxisColor(kBlue);
   inputSpec4->GetXaxis()->SetLabelColor(kBlue);
   inputSpec4->GetYaxis()->SetAxisColor(kBlue);
   inputSpec4->GetYaxis()->SetLabelColor(kBlue);
   inputSpec4->Draw("LPAY+");
}