Trk::VectorNtupleBranch Struct Reference

This class provides a simple interface to write Vectors to a root tree The size of the vectors cannot exceed ROWMAX. More...

#include <VectorNtupleBranch.h>

Collaboration diagram for Trk::VectorNtupleBranch:

Public Member Functions
bool	initForWrite (TTree &tree, const std::string &varname, int nrow, const std::string &prefix="")
	initialize class for writing
bool	initForRead (TTree &tree, const std::string &varname, int nrow, const std::string &prefix="")
	initialize class for reading
bool	fill (const Amg::VectorX &matrix)
	fill a vector
bool	fill (const CLHEP::HepVector &vec)
	fill a vector
bool	fill (const CLHEP::Hep3Vector &vec)
	fill a vector
bool	fill (const HepGeom::Point3D< double > &vec)
	fill a vector
bool	fill (const HepGeom::Vector3D< double > &vec)
	fill a vector

Public Attributes
int	m_nrows {-1}
float	m_vector [ROWMAX] {}

Static Public Attributes
static const int	ROWMAX = 10
	maximum size of the vector

Detailed Description

This class provides a simple interface to write Vectors to a root tree The size of the vectors cannot exceed ROWMAX.

The class requires all vectors to have the same size

Usage:

TTree* myTree = new TTree("data","data"); VectorNtupleBranch branch; branch.initForWrite(*myTree,"vec",3,"");

for(int i=0;i<n;++i){ branch.fill( ); myTree->Fill(); }

Definition at line 34 of file VectorNtupleBranch.h.

Member Function Documentation

fill() [1/5]

bool Trk::VectorNtupleBranch::fill

(

const Amg::VectorX &

matrix

)

fill a vector

Definition at line 34 of file VectorNtupleBranch.cxx.

                                                          {
    if( m_nrows == -1 ) return false;
    if( vector.rows() > m_nrows ) return false; 
 
    for( int i=0;i<m_nrows;++i ){
    if( i < vector.rows() ) m_vector[i] = vector[i];
    else                    m_vector[i] = 0.;
    }
    return true;
  }

fill() [2/5]

bool Trk::VectorNtupleBranch::fill

(

const CLHEP::Hep3Vector &

vec

)

fill a vector

Definition at line 62 of file VectorNtupleBranch.cxx.

                                                               {
    if( m_nrows == -1 ) return false;
    if( m_nrows != 3 ) return false; 
    for( int i=0;i<m_nrows;++i ) m_vector[i] = vector[i];
    return true;
  }

fill() [3/5]

bool Trk::VectorNtupleBranch::fill

(

const CLHEP::HepVector &

vec

)

fill a vector

Definition at line 45 of file VectorNtupleBranch.cxx.

                                                              {
    if( m_nrows == -1 ) return false;
    if( vector.num_row() > m_nrows ) return false; 
    for( int i=0;i<m_nrows;++i ){
    if( i < vector.num_row() ) m_vector[i] = vector[i];
    else                       m_vector[i] = 0.;
    }    
    return true;
  }

fill() [4/5]

bool Trk::VectorNtupleBranch::fill

(

const HepGeom::Point3D< double > &

vec

)

fill a vector

Definition at line 55 of file VectorNtupleBranch.cxx.

                                                                      {
    if( m_nrows == -1 ) return false;
    if( m_nrows != 3 ) return false; 
    for( int i=0;i<m_nrows;++i ) m_vector[i] = vector[i];
    return true;
  }

fill() [5/5]

bool Trk::VectorNtupleBranch::fill

(

const HepGeom::Vector3D< double > &

vec

)

fill a vector

Definition at line 69 of file VectorNtupleBranch.cxx.

                                                                       {
    if( m_nrows == -1 ) return false;
    if( m_nrows != 3 ) return false; 
    for( int i=0;i<m_nrows;++i ) m_vector[i] = vector[i];
    return true;
  }

initForRead()

bool Trk::VectorNtupleBranch::initForRead	(	TTree &	tree,
		const std::string &	varname,
		int	nrow,
		const std::string &	prefix = "" )

initialize class for reading

Definition at line 22 of file VectorNtupleBranch.cxx.

                                                                                                                { 
    if( nrow >= ROWMAX ) return false;
    m_nrows = nrow;
    for( int i=0;i<nrow;++i ){
      TString bname = prefix.c_str();
      bname += varname;
      bname += i;
      tree.SetBranchAddress(bname,&m_vector[i]);
    }
    return true;
  }

initForWrite()

bool Trk::VectorNtupleBranch::initForWrite	(	TTree &	tree,
		const std::string &	varname,
		int	nrow,
		const std::string &	prefix = "" )

initialize class for writing

Definition at line 10 of file VectorNtupleBranch.cxx.

                                                                                                                 {
    if( nrow >= ROWMAX ) return false;
    m_nrows = nrow;
    for( int i=0;i<nrow;++i ){
      TString bname = prefix.c_str();
      bname += varname;
      bname += i;
      tree.Branch(bname,&m_vector[i]);
    }
    return true;
  }

Member Data Documentation

m_nrows

int Trk::VectorNtupleBranch::m_nrows {-1}

Definition at line 59 of file VectorNtupleBranch.h.

{-1};

m_vector

float Trk::VectorNtupleBranch::m_vector[ROWMAX] {}

Definition at line 60 of file VectorNtupleBranch.h.

{}; 

ROWMAX

const int Trk::VectorNtupleBranch::ROWMAX = 10

static

maximum size of the vector

Definition at line 58 of file VectorNtupleBranch.h.

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The documentation for this struct was generated from the following files:

• VectorNtupleBranch.h
• VectorNtupleBranch.cxx