Re: [ROOT] saving a TGraph

From: Sebastien Greder (greder@in2p3.fr)
Date: Tue Jun 08 2004 - 19:36:40 MEST


 Hi Stephane,

 any object inheriting from TNamed can have a name. You can set
 it by using the method SetName("lkdjskdj") and retrieve it with 
 GetName(). TGraph as well as TH1* inherits from TNAmed so no problem with
 these guys, however if you want to store an object not inheriting from
 TNamed (e.g TMatrixD) you can use myobj->Write("fjdfkhdj") since
 a TKey is written for each object written in a ROOT file and TKey does
 inherit from TNamed.

 seb

On Tue, 8 Jun 2004, Stephane Plaszczynski wrote:

> hello,
> I am creating a TGraph in a piece of code and saving it in a root file.
> However I don't understand how it get recognized after in an intreactive 
> session since it has no name assocaited to it (as a histogram,ntuples 
> etc...)
> However there seems to be somreting in my file...
> thanks for help,
> Stephane
> 
> 

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