Hi Frank,
You can do:
TFile *file = TFile::Open(...);
if (file->IsZombie()) {
//file is overwritten, invalid, etc
}
Rene Brun
On Thu, 10 Oct 2002, Frank Laue wrote:
> Hi:
>
> When opening a corrupted file (maybe not closed properly) with
> TFile::Open(...) ROOT does open the file and prints some warnings on the
> screen. Is there any other means to identify that files as bad.
>
> Is there a return value or a flag that one can easily check on in a
> program ?
>
> Thanks.
>
> Cheers,
> Frank
>
>
>
> > -----Original Message-----
> > From: owner-roottalk@pcroot.cern.ch
> > [mailto:owner-roottalk@pcroot.cern.ch] On Behalf Of Rene Brun
> > Sent: Thursday, October 10, 2002 11:16 AM
> > To: Avdhesh Chandra
> > Cc: roottalk@pcroot.cern.ch
> > Subject: Re: [ROOT] graph array problem
> >
> >
> > Hi,
> >
> > I do not understand if what you try to do is:
> > - an array of TGraphErrors
> > - or one single TGraphErrors build with an array of points
> > and associated errors.
> >
> > Please clarify by sending a complete running script.
> >
> > Rene Brun
> >
> >
> >
> > On Thu, 10 Oct 2002, Avdhesh Chandra wrote:
> >
> > >
> > > Hi,
> > > I am trying to make graph array, so i can use it.
> > >
> > > programe looks like(where i am defining graph array)
> > >
> > > for(int i = 0 ; i < nent ; i++)
> > > {
> > > cout << " Col[i] " << Col[i] << endl;
> > > gr[i] = new TGraphErrors(n,Z,Ent[i],Ez,Eent[i]);
> > > gr[i]->SetMarkerColor(Col[i]);
> > > gr[i]->SetMarkerStyle(Sty[i]);
> > > }
> > >
> > > when i am running my code i am getting following message
> > >
> > > ---------------------------------------------------
> > > Col[i] 7
> > > Col[i] 6
> > > Error: Array index out of range gr -> [1] valid upto gr FILE:test.C
> > > LINE:156
> > >
> > > *** Break *** segmentation violation
> > > ---------------------------------------------------
> > >
> > >
> > > Which shows that when it goes secound time in the loop it
> > having problem.
> > > Please let me know what i am doing worng.
> > >
> > > Thanks for any help
> > > Avdhesh
> > >
> >
>
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