Re: [ROOT] checking a root file

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Dec 14 2001 - 15:02:12 MET


Hi Gernot,

The message "Error in <TTree::Write>: No file open" is printed if you have
no file connected at the time you call Write. I do not understand how
you can read your Tree on Linux ?

Please check your setup.

Rene Brun



Gernot Maier wrote:
> 
> Hej Rooters,
> 
> I was trying to write a simple tree to a file. During that I get following error message:
> Error in <TTree::Write>: No file open
> 
> Despite this error message, the output file is created and the tree is written to that.
> 
> Now my problem: with Linux everything works well, with Alpha OSF, root crashes with any comment
> after opening the file and doing a command like tree->Print().
> 
> Is there a possibility to check root-files? How can I avoid the error quoted?
> 
> I'm using root 3.02/05 with Suse Linux 7.2 and 3.02/05 with OSF V4.0F.
> 
> thanks
> 
> Gernot
> 
> -----
> Gernot Maier                    KASCADE Collaboration
> Institut fuer Kernphysik        Tel. +49 (0) 7247 82-4174
> Forschungszentrum Karlsruhe     gernot.maier@ik.fzk.de



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