[ROOT] TNtuple::Draw question....

From: Ray Fliller III (rfliller@bnl.gov)
Date: Wed Jul 30 2003 - 15:56:27 MEST


  Hello Rooters,


    I have a class that looks like

    class foo: public TNtuple{
	protected:
        
       Double_t value;
	
	public:
	foo(char *name, char *title, char *varlist): 
		TNtuple(name,title,varlist)
          ....
       Double_t GetValue() const {return value;}
         ....
    }

  Assume that the TNtuple have columns x,y,z, how can I do

  foo *onyou= new foo("foo","onyou","x:y:z");
  onyou->Draw("x:y/GetValue()") 

  or some such thing.


-- 

 RAINMAN
      "How much does a piece of gum cost Ray?"
      "About $100."
      "How much does a new car cost Ray?"
      "`Bout $100."
      "There goes working for NASA!"

==================================================================
Ray Fliller: rfliller@bnl.gov      Office Phone: (631)-344-6124 
C-A Accelerator Physics            Dept. Fax: (631)-344-5954
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Upton, NY 11973                    Office: Room 211

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