[ROOT] Re: Can I take the ratio of two TH2D?

From: Rene Brun (Rene.Brun@cern.ch)
Date: Wed May 08 2002 - 23:32:52 MEST


Hi Xiaorong,

Suppose TH2D *h1, *h2
If you want to keep h1 and h2 unmodified, do
  TH2D *h3 = (TH2D*)h1->Clone("h3");
  h3->Divide(h2);

Now h3 is teh result of dividing h1 by h2

All the histogram operations are in the base class TH1

Rene Brun

On Wed, 8 May 2002, Xiaorong Wang wrote:

> Dear Rooter expert,
> 
> I have two two dimensional histograms, can I get the ratio between them
> then get another one two dimensional histogram? 
> 
> I tried to take the ratio individually, so i got two one dimensional
> histogram, but I lost the correlation between these two axes.
> so, how can I take the ratio and at same time keep the correlation
> between two axes?
> 
> Thanks in advance,
> 
> Xiaorong Wang
> 
> 
> 



This archive was generated by hypermail 2b29 : Sat Jan 04 2003 - 23:50:52 MET