Re: use TTree in g++

Dan,

see the simple example below

compile and link it with

g++ -o dan dan.cxx `root-config --cflags --libs`

//file dan.cxx

#include "TFile.h"
#include "TTree.h"
#include "TRandom3.h"

int main()
{

   TFile hfile("dan.root","RECREATE");

   double px,py;
   TTree *T = new TTree("T","Demo");
   T->Branch("px",&px,"px/D");
   T->Branch("py",&py,"py/D");

   TRandom3 r(0);
   for ( int i=0; i<10000; i++) {

      r.Rannor(px,py); //px and py will be two gaussian random numbers
      T->Fill();

   T->Print();
   T->Write();
   return 0;
}

Rene

On
Mon, 15 May 2006, Dan
Holmes wrote:

> ..what do i have to do to be able to use a TTree is a standalone g++ on slc3
> compiled executable?
>
> ..is it as simple as including TTree.h in the header and the libTree.so in
> the library path?
>
> ..maybe you have some doc on it somewhere that i have missed..?
>
> cheers,
>
> Dan.
>
Received on Mon May 15 2006 - 12:44:08 MEST