New tutorial: // This example writes a tree with objects of the class Event. // It is a simplified version of $ROOTSYS/test/MainEvent.cxx to // write the tree, and $ROOTSYS/test/eventb.C // It shows: //   -how to fill a Tree with an event class containing these //    data members: //     char           fType[20]; //     Int_t          fNtrack; //     Int_t          fNseg; //     Int_t          fNvertex; //     UInt_t         fFlag; //     Float_t        fTemperature; //     EventHeader    fEvtHdr; //     TClonesArray  *fTracks;            //-> //     TH1F          *fH;                 //-> //     Int_t          fMeasures[10]; //     Float_t        fMatrix[4][4]; //     Float_t       *fClosestDistance;   //[fNvertex] // //   -the difference in splitting or not splitting a branch //   -how to read selected branches of the tree, //    and print the first entry with less than 587 tracks. //   -how to browse and analyze the Tree via the TBrowser and TTreeViewer
New tutorial:
// This example writes a tree with objects of the class Event.
// It is a simplified version of $ROOTSYS/test/MainEvent.cxx to
// write the tree, and $ROOTSYS/test/eventb.C
// It shows:
//   -how to fill a Tree with an event class containing these
//    data members:
//     char           fType[20];
//     Int_t          fNtrack;
//     Int_t          fNseg;
//     Int_t          fNvertex;
//     UInt_t         fFlag;
//     Float_t        fTemperature;
//     EventHeader    fEvtHdr;
//     TClonesArray  *fTracks;            //->
//     TH1F          *fH;                 //->
//     Int_t          fMeasures[10];
//     Float_t        fMatrix[4][4];
//     Float_t       *fClosestDistance;   //[fNvertex]
//
//   -the difference in splitting or not splitting a branch
//   -how to read selected branches of the tree,
//    and print the first entry with less than 587 tracks.
//   -how to browse and analyze the Tree via the TBrowser and TTreeViewer

// This example can be run in many different ways:
//  way1:  .x tree4.C    using the CINT interpreter
//  way2:  .x tree4.C++  using the automatic compiler interface
//  way3:  .L tree4.C  or .L tree4.C++
//          tree4()
// One can also run the write and read parts in two separate sessions.
// For example following one of the sessions above, one can start the session:
//   .L tree4.C
//   tree4r();


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@1931 27541ba8-7e3a-0410-8455-c3a389f83636

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