Problems with Histograms

From: Robert Willson (willson@pacific.mps.ohio-state.edu)
Date: Fri Dec 11 1998 - 23:15:06 MET 

I'm just beginning with root, so please excuse the ignorance.  Here's my 
file:

void newprog() {

  c1 = new TCanvas("c1", "Stupid", 20, 10, 800, 600);
  pad1 = new TPad("pad1", "First", 0.02, 0.7, 0.97, 0.97, 17, 3);
  pad2 = new TPad("pad2", "Second", 0.02, 0.4, 0.97, 0.65, 17, 3);
  pad3 = new TPad("pad3", "Third", 0.02, 0.02, 0.97, 0.35, 17, 3);

  pad1.Draw();
  pad2.Draw();
  pad3.Draw();

  TH1F *histo1 = new TH1F("Num1", "0.0001", 100, 0.0, 100.0);
  TH1F *histo2 = new TH1F("Num2", "0.00001", 100, 0.0, 100.0);
  TH1F *histo3 = new TH1F("Num3", "0.000001", 100, 0.0, 100.0);
  Double_t x, w1, w2, w3;

  for (x=0.0; x<100.0; x=x+1.0) {

    w1 = 3.0 - x*x + 10.0*x + 0.01*x*x*x - 0.0001*x*x*x*x;
    w2 = 3.0 - x*x + 10.0*x + 0.01*x*x*x - 0.00001*x*x*x*x;
    w3 = 3.0 - x*x + 10.0*x + 0.01*x*x*x - 0.000001*x*x*x*x;
   
    histo1.Fill(x,w1);
    histo2.Fill(x,w2);
    histo3.Fill(x,w3);

  }

  pad1.cd();
  histo1.Draw("C");
  pad2.cd();
  histo2.Draw("C");
  pad3.cd();
  histo3.Draw("C");
}


The first histogram is plotting, but the second and third are not.  Any 
suggestions?

Thanks,

Robert Willson
willson@pacific.mps.ohio-state.edu

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