[ROOT] zoom problem

From: ivan brida (brida@fmph.uniba.sk)
Date: Wed Oct 23 2002 - 16:55:46 MEST 

hi rooters

I have problem with zooming the y-axis. I do this:

{ TGraph *g=new TGraph(10);
  for (int i=0 ; i<10 ; i++) {g->SetPoint(i,i,i);}
  g -> SetMarkerStyle(20);
  TCanvas *c = new TCanvas("c","c");
  TH1F *hframe = new TH1F ("hframe","",10,1,10);
  hframe -> SetMinimum(0);
  hframe -> SetMaximum(10);
  hframe -> SetStats(0);
  g->SetHistogram(hframe);
  g -> Draw("ap");
  c -> Modified();
}

the y-maximum is 10. if I zoom the y-axis interactively (e.g. y=2..5) 
and then unzoom, the hframe->GetMaximum() returns the value 1.
this problem doesn't occur for x-axis.

I use root version 3.03/08 20.8.2002, win 2000.

could anybody help me?

thanks

            ivan

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