THbookTree
class description - source file - inheritance tree (.pdf)
public:
THbookTree()
THbookTree(const char* name, Int_t id)
virtual ~THbookTree()
static TClass* Class()
virtual Int_t GetEntry(Long64_t entry = 0, Int_t getall = 0)
THbookFile* GetHbookFile()
virtual Int_t GetID()
virtual Int_t GetType()
Float_t* GetX()
virtual void InitBranches(Long64_t entry)
virtual TClass* IsA() const
char* MakeX(Int_t nvars)
virtual void Print(Option_t* option = "") const
virtual Long64_t SetEntries(Long64_t n = -1)
virtual void SetHbookFile(THbookFile* file)
virtual void SetType(Int_t atype)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
protected:
Int_t fID Hbook identifier
Int_t fType RWN (0) or CWN (1)
char* fX storage area for RWN
Bool_t fInit flag to know if branches computed
THbookFile* fFile pointer to Hbook file
THbookTree
A wrapper class supporting Hbook ntuples (CWN and RWN).
The normal TTree calls can be used, including TTree::Draw().
Data read directly from the Hbook file via THbookFile.
IMPORTANT NOTE
When setting the branch address (via THbookTree::SetBranchAddress)
for a branch in an Hbook block containing several names, eg
Hbook block SELEVN with the following variables:
******************************************************************
* 1 * R*4 * * * SELEVN * WGGS
* 2 * R*4 * * * SELEVN * AM12
* 3 * R*4 * * * SELEVN * AM34
* 4 * R*4 * * * SELEVN * AM14
* 5 * R*4 * * * SELEVN * AM32
* 6 * R*4 * * * SELEVN * PtPI(4)
* 7 * R*4 * * * SELEVN * PHIPI(4)
* 8 * R*4 * * * SELEVN * THTPI(4)
one must define a C struct like:
struct {
Float_t Wggs;
Float_t Am12;
Float_t Am34;
Float_t Am14;
Float_t Am32;
Float_t Ptpi[4];
Float_t Phipi[4];
Float_t Thtpi[4];
} event;
and set ONLY the first variable address with:
h96->SetBranchAddress("Wggs",&event.Wggs);
THbookTree(): TTree()
THbookTree(const char *name,Int_t id)
:TTree(name,name)
~THbookTree()
Int_t GetEntry(Long64_t entry, Int_t /*getall*/)
void InitBranches(Long64_t entry)
void Print(Option_t *option) const
Long64_t SetEntries(Long64_t n)
Inline Functions
THbookFile* GetHbookFile()
Int_t GetID()
Int_t GetType()
Float_t* GetX()
char* MakeX(Int_t nvars)
void SetHbookFile(THbookFile* file)
void SetType(Int_t atype)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
Author: Rene Brun 18/02/2002
Last update: root/hbook:$Name: $:$Id: THbookTree.cxx,v 1.10 2005/01/12 10:51:00 brun Exp $
Copyright (C) 1995-2002, Rene Brun and Fons Rademakers. *
ROOT page - Class index - Class Hierarchy - Top of the page
This page has been automatically generated. If you have any comments or suggestions about the page layout send a mail to ROOT support, or contact the developers with any questions or problems regarding ROOT.