//*CMZ : 2.20/00 03/03/99 14.18.31 by Rene Brun
//*CMZ : 2.00/12 14/09/98 20.18.09 by Rene Brun
//*CMZ : 1.03/09 08/12/97 13.46.10 by Fons Rademakers
//*-- Author : Rene Brun 06/04/96
//*KEEP,CopyRight,T=C.
/*************************************************************************
* Copyright(c) 1995-1999, The ROOT System, All rights reserved. *
* Authors: Rene Brun, Fons Rademakers. *
* For list of contributors see $ROOTSYS/AA_CREDITS. *
* *
* Permission to use, copy, modify and distribute this software and its *
* documentation for non-commercial purposes is hereby granted without *
* fee, provided that the above copyright notice appears in all copies *
* and that both the copyright notice and this permission notice appear *
* in the supporting documentation. The authors make no claims about the *
* suitability of this software for any purpose. It is provided "as is" *
* without express or implied warranty. *
*************************************************************************/
//*KEND.
//////////////////////////////////////////////////////////////////////////
// //
// TNtuple //
// //
// A simple tree restricted to a list of float variables only. //
// //
// Each variable goes to a separate branch. //
// //
// A Ntuple is created via //
// TNtuple(name,title,varlist,bufsize) //
// It is filled via: //
// TNtuple::Fill(*x) or //
// TNtuple::Fill(v1,v2,v3.....) //
// //
//////////////////////////////////////////////////////////////////////////
//*KEEP,TNtuple,T=C++.
#include "TNtuple.h"
//*KEEP,TTree.
#include "TTree.h"
//*KEEP,TBranch,T=C++.
#include "TBranch.h"
//*KEEP,TLeaf,T=C++.
#include "TLeaf.h"
//*KEEP,TBrowser.
#include "TBrowser.h"
//*KEND.
ClassImp(TNtuple)
//______________________________________________________________________________
TNtuple::TNtuple(): TTree()
{
//*-*-*-*-*-*Default constructor for Ntuple*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ==============================
fNvar = 0;
fArgs = 0;
}
//______________________________________________________________________________
TNtuple::TNtuple(const Text_t *name, const Text_t *title, const Text_t *varlist, Int_t bufsize)
:TTree(name,title)
{
//*-*-*-*-*-*-*-*-*-*-*-*-*Create an Ntuple*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* ================
// The parameter varlist describes the list of the ntuple variables
// separated by a colon:
// example: "x:y:z:energy"
// For each variable in the list a separate branch is created.
//
// Use TTree to create branches with variables of different data types.
//*-*
Int_t i;
fNvar = 0;
fArgs = 0;
// Count number of variables (separated by :)
Int_t nch = strlen(varlist);
if (nch == 0) return;
char *vars = new char[nch+1];
strcpy(vars,varlist);
Int_t *pvars = new Int_t[1000];
fNvar = 1;
pvars[0] = 0;
for (i=1;i<nch;i++) {
if (vars[i] == ':') {
pvars[fNvar] = i+1;
vars[i] = 0;
fNvar++;
}
}
fArgs = new Float_t[fNvar];
// Create one branch for each variable
for (i=0;i<fNvar;i++) {
Int_t pv = pvars[i];
TTree::Branch(&vars[pv],&fArgs[i],&vars[pv],bufsize);
}
delete [] vars;
delete [] pvars;
}
//______________________________________________________________________________
TNtuple::~TNtuple()
{
//*-*-*-*-*-*Default destructor for an Ntuple*-*-*-*-*-*-*-*-*-*-*-*
//*-* ================================
delete [] fArgs;
fArgs = 0;
}
//______________________________________________________________________________
void TNtuple::Browse(TBrowser *b)
{
fLeaves.Browse( b );
}
//______________________________________________________________________________
Int_t TNtuple::Fill()
{
//*-*-*-*-*-*-*-*-*Fill a Ntuple with current values in fArgs*-*-*-*-*-*-*
//*-* ==========================================
// Note that this function is protected.
// Currently called only by TChain::Merge
return TTree::Fill();
}
//______________________________________________________________________________
Int_t TNtuple::Fill(Float_t *x)
{
//*-*-*-*-*-*-*-*-*Fill a Ntuple with an array of floats*-*-*-*-*-*-*-*-*-*
//*-* =====================================
//*-*- Store array x into buffer
for (Int_t i=0;i<fNvar;i++) {
fArgs[i] = x[i];
}
return TTree::Fill();
}
//______________________________________________________________________________
Int_t TNtuple::Fill(Float_t x0,Float_t x1,Float_t x2,Float_t x3,Float_t x4
,Float_t x5,Float_t x6,Float_t x7,Float_t x8,Float_t x9
,Float_t x10,Float_t x11,Float_t x12,Float_t x13,Float_t x14)
{
//*-*-*-*-*-*-*-*-*Fill a Ntuple: Each Ntuple item is an argument*-*-*-*-*-*-*
//*-* ==============================================
if (fNvar > 0) fArgs[0] = x0;
if (fNvar > 1) fArgs[1] = x1;
if (fNvar > 2) fArgs[2] = x2;
if (fNvar > 3) fArgs[3] = x3;
if (fNvar > 4) fArgs[4] = x4;
if (fNvar > 5) fArgs[5] = x5;
if (fNvar > 6) fArgs[6] = x6;
if (fNvar > 7) fArgs[7] = x7;
if (fNvar > 8) fArgs[8] = x8;
if (fNvar > 9) fArgs[9] = x9;
if (fNvar > 10) fArgs[10] = x10;
if (fNvar > 11) fArgs[11] = x11;
if (fNvar > 12) fArgs[12] = x12;
if (fNvar > 13) fArgs[13] = x13;
if (fNvar > 14) fArgs[14] = x14;
return TTree::Fill();
}
//_______________________________________________________________________
void TNtuple::Streamer(TBuffer &b)
{
//*-*-*-*-*-*-*-*-*Stream a class object*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//*-* =========================================
if (b.IsReading()) {
b.ReadVersion(); //Version_t v = b.ReadVersion();
TTree::Streamer(b);
b >> fNvar;
if (fNvar <= 0) return;
fArgs = new Float_t[fNvar];
for (Int_t i=0;i<fNvar;i++) {
TBranch *branch = (TBranch*)fBranches.UncheckedAt(i);
if (branch) branch->SetAddress(&fArgs[i]);
}
} else {
b.WriteVersion(TNtuple::IsA());
TTree::Streamer(b);
b << fNvar;
}
}
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