Re: [ROOT] nt/fill

From: Valeri Fine (Faine) (fine@bnl.gov)
Date: Wed Nov 22 2000 - 23:21:16 MET


> What's the root equivlent to the nt/fill command? 

  There is the method:

  TTree::Fill()
  see:  http://root.cern.ch/root/htmldoc/TTree.html#TTree:Fill

  However I am not sure I did get your question.
  What did you call "nt/fill" ?

  PAW says:

 PAW > nt/fill
 *** Unknown command: nt/fill
 PAW >

> Or, if I do a
> tree->Draw("x:y>>myplot");
> 
> Is there a way of defining the axis of myplot?
> 

 "myplot" is your 2d histogram:
http://root.cern.ch/root/htmldoc/TH2.html

The last os derived from
http://root.cern.ch/root/htmldoc/TH1.html
and inherits  TH1 properties as well.

The method

http://root.cern.ch/root/htmldoc/TH1.html#TH1:SetMaximum

can be used to define z-scale with 2d hisrogram .
x and y scales are defined by "myplot" TH2F class constructor.


> Cheers. Steve.
> 
> 



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