Re: TNtuple or TTree Selection.

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Oct 23 1997 - 14:42:45 MEST

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In reply to: Patrice Lebrun: "TNtuple or TTree Selection."
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Patrice Lebrun wrote:
> 
> Hi,
> 
> TTree::Draw or TNtuple::Draw seems to be not easy to used with very
> large Text_t or TCut expression
> 
> example:
> ntuple.Draw("Very big expression ....","Very complicated cuts");
> 
> Is any other ways to do that and how to use these ?
> 

You have the choice in creating a char *selection string yourself
via sprintf or equivalent or use the TCut class 
   see http://root.cern.ch/root/html/TCut.html

You can use the && and ||, etc operators with TCut objects (or
graphical cuts defined with TCutG objects).

Rene Brun

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