Hello,
I don't understand why the following scripts fail (I patterned it off of
tree3.C). If the statements which refer to px2 are removed, it runs just
fine. But I want to be able to have multiple 2 dimensional branches
within the same tree. Is this possible? I'm running version 3.02/00 (as
of August 29th) on an updated RedHat 7.1 x86 machine.
Thanks,
Glen
void twodw() {
const Int_t kMaxDim = 50;
Int_t nx;
Int_t ny;
Double_t px1[kMaxDim][kMaxDim];
Double_t px2[kMaxDim][kMaxDim];
TFile f("twod.root","recreate");
TTree *twod = new TTree("twod","Reconst ntuple");
twod->Branch("nx",&nx,"nx/I");
twod->Branch("ny",&ny,"ny/I");
twod->Branch("px1",px1,"px1[nx][ny]/D");
twod->Branch("px2",px2,"px2[nx][ny]/D");
nx = gRandom->Rndm()*(kMaxDim-1);
ny = gRandom->Rndm()*(kMaxDim-1);
for (Int_t i=0;i<100;i++) {
for (Int_t j=0;j<nx;j++) {
for (Int_t k=0;k<ny;k++) {
px1[j][k] = gRandom->Gaus(0,1);
px2[j][k] = gRandom->Gaus(0,1);
}
}
twod->Fill();
}
twod->Print();
f.cd();
twod->Write();
}
void twodr()
{
TFile *f = new TFile("twod.root");
TTree *twod = (TTree*)f->Get("twod");
twod->Draw("px1");
}
void twod()
{
twodw();
twodr();
}
This archive was generated by hypermail 2b29 : Tue Jan 01 2002 - 17:50:59 MET