Re: [ROOT] Obtaining the range of a zoomed X-axis

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Aug 09 2001 - 18:50:38 MEST

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Hi Chris,

Get the pointer to the axis, eg
TAxis *xaxis = h2->GetXaxis();

then get the axis bin range
  Int_t binmin = xaxis->GetFirst();
  Int_t binmax = xaxis->GetLast()

The range with:
  Double_t xmin = xaxis->GetBinLowEdge(binmin);
  Double_t xmax = xaxis->GetBinUpEdge(binmax);

same for the y axis

Rene Brun

Chris Milne wrote:
> 
> Hi there,
> 
> I was wondering if anyone could help me find the range of the x-axis of a TH2F
> Histogram, I can obtain the unzoomed range, however I want to obtain the zoomed
> range in order to the set the range of another graph.
> 
> Thanks
> Chris Milne
> ----------------------
> Heriot-Watt University
> c.milne@hw.ac.uk

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