Hi Rene,
Sorry, I forgot !
I use root 3.04/02 on RH Linux 7.3.
I can add that GetEntry in the Loop function returns 0, so it's just
like my entry does not exist, but I can see it and plot histograms from
the Tree viewer and with the command line :
root [0] TFile f("1-02.root") // the file containing the tree 'h1'
root [1] h1->Draw("dir[0][2]")
Thanks again,
Julien
On Fri, 17 Oct 2003, Rene Brun wrote:
> Hi Julien,
>
> I cannot reproduce this problem. Unfortunately, you do not indicate
> which version of ROOT and which machine.
>
> Rene Brun
>
>
> On Fri,
> 17 Oct 2003, Julien Bolmont wrote:
>
> >
> >
> > Hello rooters,
> >
> > I used TTree::MakeClass to generate a skeleton class for my tree.
> > This tree contains simple variables, some 1D arrays and some 2D arrays.
> >
> > All works well when I try to use simple variables or 1D arrays, ie I get
> > the right numbers.
> >
> > But it doesn't work with 2D arrays. For example, I got a table:
> > Float_t dir[100][3];
> > which coresponds to the branch
> > TBranch *b_dir;
> >
> > In Init(..) we have :
> > fChain->SetBranchAddress("dir", dir);
> >
> > In Notify() :
> > b_dir = fChain->GetBranch("dir");
> >
> >
> > And now, if I have a Loop function with
> >
> > for (Int_t jentry = 0 ; jentry < nentries ; jentry++) {
> >
> > Int_t ientry = LoadTree(jentry);
> > if (ientry < 0) break;
> >
> > nb1 += b_dir->GetEntry(ientry);
> >
> >
> > cout << dir[0][2] << endl;
> >
> > }
> >
> > All I got is a lot's of 0.
> >
> >
> > I think it's probably a problem of adress, but how to solve it ??
> >
> > Thanks for your help !
> >
> > JB.
> >
> >
> >
> >
>
--
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Julien Bolmont | julien.bolmont@gamum2.in2p3.fr
Ingénieur diplômé, doctorant | Tél. bureau: +33 4 67 14 41 91
Groupe d'Astroparticules de Montpellier | Fax: +33 4 67 14 41 90
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