Tim Miller wrote: > Howdy all! > > Before I go out and write this code, I was wondering > if there is any "ROOT official" code for the (in)famous > lundtogeant FORTRAN code? It's trivial to write but I > was just wondering if that functionality is lying > around. > > Also, since I'm referring to dreaded Fortran routines, > any ROOT abilities to read namelists from ASCII files? > The Root class TPythia is an interface between Root and the Pythia/Jetset generators. This interface uses a TClonesArray of TMCParticle to import the data from the Lund/Jetset format. An example of use of this interface is also given in our recently released ATLFAST package (the ATLAS fast Monte-Carlo). See Root news for more details. We are now polishing a new tool "gh2root" gh2root generates automatically C++ classes based on Root from the GEANT3 kinematics and hits structures. The generated code can be used to automatically convert a GEANT Zebra/FZ file with KINE and HITS structures into a Root Tree. The Root Tree has the following advantages compared to the traditional storage with Zebra or equivalent. - direct access to any event on the file - selective reading of event subsets - histogramming facility. - The generated Root file is much smaller (typically by a factor 2). We will announce this tool in the coming days. People interested by this facility can contact me directly. I am looking for more examples and data. Rene Brun
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