Re: TNtuple doesn't fill after upgrading from ROOT version v5.22 to ROOT version v5.24

Hi Arne,

I can _not_ reproduce this problem. Can you provide a complete running example?

Cheers,
Philippe.

Arne Vandenbroucke wrote:
> Hi,
>
> I upgraded to ROOT v5.24 today and ran into some problems with the
> TNtuple Class. The problem is that my TNtuple does not seem to get
> filled when using v5.24. If I am using v5.22 the Ntuple gets filled.
> Below is the simple code I am using, compiled with both libraries. The
> program's output is given too. For comparison I also fill a Tree, the
> filling of the Tree seems to happen without problem.
>
> This is the relevant piece of my code::
> cout<< "Reading file :: "<< filename<<endl;
> datafile = new TFile(outfile,"RECREATE");
> datantuple = new TNtuple("datantuple",filebase,"a1");
> dattree = new TTree("dattree",filebase);
> dattree->Branch("a1",&a1);
> nlines=0;
> in.open(filename);
> while (1) {
> in>> a1 ;
> if (!in.good()) break;
> datantuple->Fill(a1);
> dattree->Fill();
> nlines++;
> }
> printf(" found %d points\n",nlines);
> cout<< dattree->GetEntries()<< " Tree entries"<<endl;
> cout<< datantuple->GetEntries()<< " Ntuple entries"<<endl;
>
>
> I compile it using:
> g++ -Wall -W -g -DDEBUG -fPIC -Wall -W -g -DDEBUG -fPIC -pthread
> -m64 -I/home/products/root/root_v5.24.00/include -O3
> -L/home/products/root/root_v5.24.00/lib -lCore -lCint -lRIO -lNet -lHist
> -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics
> -lMathCore -lThread -lGui -pthread -lm -ldl -rdynamic readdata_deb.C -o
> readdata_deb
>
> The output then gives:
> ./readdata_deb -f ./testt.txt
> Reading file :: ./testt.txt
> found 1000 points
> 1000 Tree entries
> 0 Ntuple entries
>
> --> The Ntuple is empty !
>
>
> If I compile it using the v5.22 libs::
> g++ -Wall -W -g -DDEBUG -fPIC -Wall -W -g -DDEBUG -fPIC -pthread
> -m64 -I/home/products/ROOT/new/include/root -O3
> -L/home/products/ROOT/new/lib/root -lCore -lCint -lRIO -lNet -lHist
> -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics
> -lMathCore -lThread -lGui -pthread -lm -ldl -rdynamic readdata_deb.C -o
> readdata_deb
>
> The output now is:
> Reading file :: ./testt.txt
> found 1000 points
> 1000 Tree entries
> 1000 Ntuple entries
>
> --> The Ntuple has 1000 entries
>
> Could somebody explain what is going on ?
>
>
> Thanks a lot for your time,
>
> Arne.
>
>
Received on Fri Jul 10 2009 - 21:02:23 CEST