Thanks for the quick response. But what I would like to do is write the
array of histograms as an array, rather than have each individual
histogram appear separately in the root file. I am trying to preserve the
position in the array so that I can compare it to another array. Is this
something that can be done? Thanks again
Jason
On Wed, 14 May 2003, Otto Schaile wrote:
> Hi Jason,
>
> On Wed, 14 May 2003, jrieger wrote:
>
> > Greetings,
> >
> > I have generated an array of TH1F that I now want to write out to a root
> > file. However, I am having difficulty getting this to work. Is it
> > possible? A portion of the code that I used to make this histogram is:
>
>
> just put in front:
>
> TFile * outf = new TFile("xxxx.root", "RECREATE");
> // all new hist will be added to directory of xxxx.root
>
> >
> > TH1F *myhist[1000];
> > char *histname = new char[10];
> > sprintf(histname, "h_x_%d",xx);
> > myhist[xx]=new TH1F(histname,"",100,-0.25,0.25);
> > for (Int_t iii=0;iii<nentries; iii++) {
> > Double_t binx=h_x->GetBinContent(iii);
> > myhist[xx]->SetBinContent(iii,binx);
> > }
>
> // and at the end:
>
> outf->Write(); // all objects in dir of outf (xxxx.root)
> // are written
>
> Cheers
> Otto
>
> --
> Otto Schaile Sektion Physik, LMU Muenchen
> Phone: +49 89 289 14070 Am Coulombwall 1, D-85748 Garching, Germany
> GSM: +49 160 1553598
> FAX: +49 89 289 14072 EMail: Otto.Schaile@Physik.Uni-Muenchen.DE
>
>
>
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