JFIT::JFit Class Reference

Data structure for track fit results with history and optional associated values. More...

#include <JEvt.hh>

Inheritance diagram for JFIT::JFit:

Public Member Functions
	JFit ()
	Default constructor. More...
	JFit (const JHistory &history, const double x, const double y, const double z, const double dx, const double dy, const double dz, const double t, const double Q, const int NDF, const double E=0.0, const int status=-1)
	Constructor. More...
	JFit (const JHistory &history, const double x, const double y, const double z, const int status=-1)
	Constructor for storing position only. More...
JFit &	add (const int type)
	Add event to history. More...
double	getX () const
	Get X-position. More...
double	getY () const
	Get Y-position. More...
double	getZ () const
	Get Z-position. More...
double	getDX () const
	Get X-slope. More...
double	getDY () const
	Get Y-slope. More...
double	getDZ () const
	Get Z-slope. More...
double	getT () const
	Get time. More...
double	getQ () const
	Get quality. More...
int	getNDF () const
	Get number of degrees of freedom. More...
double	getE () const
	Get energy. More...
int	getStatus () const
	Get status of the fit; negative values should refer to a bad fit. More...
void	move (const double step, const double velocity)
	Move vertex along this track with given velocity. More...
void	setE (const double E)
	Set energy. More...
size_t	getDimensionOfErrorMatrix () const
	Get dimension of error matrix. More...
const std::vector< double > &	getV () const
	Get error matrix. More...
double	getV (const size_t row, const size_t col) const
	Get element of error matrix. More...
template<class T >
void	setV (const size_t size, const T &data)
	Set error matrix. More...
const std::vector< double > &	getW () const
	Get associated values. More...
void	setW (const std::vector< double > &W)
	Set associated values. More...
int	getN () const
	Get number of associated values. More...
bool	hasW (const int i) const
	Check availability of value. More...
double	getW (const int i) const
	Get associated value. More...
double	getW (const int i, const double value) const
	Get associated value. More...
void	setW (const int i, const double value)
	Set associated value. More...
	ClassDef (JFit, 6)
const JHistory &	getHistory () const
	Get history. More...
JHistory &	getHistory ()
	Get history. More...
	ClassDef (JHistory, 1)

Protected Attributes
double	__x
double	__y
double	__z
double	__dx
double	__dy
double	__dz
double	__t
double	__Q
int	__NDF
std::vector< double >	V
std::vector< double >	W
double	__E
int	__status

Detailed Description

Data structure for track fit results with history and optional associated values.

Definition at line 33 of file JReconstruction/JEvt.hh.

Constructor & Destructor Documentation

JFIT::JFit::JFit ( )

inline

Default constructor.

Parameters are initialized with non physical values.

Definition at line 43 of file JReconstruction/JEvt.hh.

          :
      __x(std::numeric_limits<double>::lowest()),
      __y(std::numeric_limits<double>::lowest()),
      __z(std::numeric_limits<double>::lowest()),
      __dx(0.0),
      __dy(0.0),
      __dz(0.0),
      __t(std::numeric_limits<double>::lowest()),
      __Q(std::numeric_limits<double>::lowest()),
      __NDF(-1),
      __E(0.0),
      __status(-1)
    {}

JFIT::JFit::JFit ( const JHistory &  history, const double  x, const double  y, const double  z, const double  dx, const double  dy, const double  dz, const double  t, const double  Q, const int  NDF, const double  E = 0.0, const int  status = -1  )

inline

Constructor.

Parameters

history	history
x	X-position
y	Y-position
z	Z-position
dx	X-slope
dy	Y-slope
dz	Z-slope
t	time
Q	quality
NDF	number of degrees of freedom
E	energy
status	status

Definition at line 74 of file JReconstruction/JEvt.hh.

                                   :
      JHistory(history)
    {
      __x      = x;
      __y      = y;
      __z      = z;
      __dx     = dx;
      __dy     = dy;
      __dz     = dz;
      __t      = t;
      __Q      = Q;
      __NDF    = NDF;
      __E      = E;
      __status = status;
    }

JFIT::JFit::JFit ( const JHistory &  history, const double  x, const double  y, const double  z, const int  status = -1  )

inline

Constructor for storing position only.

Note that the type of fit can be obtained via the history information.

Parameters

history	history
x	X-position
y	Y-position
z	Z-position
status	status

Definition at line 113 of file JReconstruction/JEvt.hh.

                                  :
      JHistory(history)
    {
      __x      = x;
      __y      = y;
      __z      = z;
      __dx     = 0.0;
      __dy     = 0.0;
      __dz     = 0.0;
      __t      = 0.0;
      __Q      = 0.0;
      __NDF    = -1;
      __E      = 0.0;
     __status  = status;
    }

Member Function Documentation

JFit& JFIT::JFit::add ( const int  type )

inline

Add event to history.

Parameters

type	application type

Returns

this fit

Definition at line 140 of file JReconstruction/JEvt.hh.

    {
      getHistory().add(type);

      return *this;
    }

double JFIT::JFit::getX ( ) const

inline

Get X-position.

Definition at line 148 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getY ( ) const

inline

Get Y-position.

Definition at line 149 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getZ ( ) const

inline

Get Z-position.

Definition at line 150 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getDX ( ) const

inline

Get X-slope.

Definition at line 151 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getDY ( ) const

inline

Get Y-slope.

Definition at line 152 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getDZ ( ) const

inline

Get Z-slope.

Definition at line 153 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getT ( ) const

inline

Get time.

Definition at line 154 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getQ ( ) const

inline

Get quality.

Definition at line 155 of file JReconstruction/JEvt.hh.

int JFIT::JFit::getNDF ( ) const

inline

Get number of degrees of freedom.

Definition at line 156 of file JReconstruction/JEvt.hh.

double JFIT::JFit::getE ( ) const

inline

Get energy.

Definition at line 157 of file JReconstruction/JEvt.hh.

int JFIT::JFit::getStatus ( ) const

inline

Get status of the fit; negative values should refer to a bad fit.

Definition at line 158 of file JReconstruction/JEvt.hh.

void JFIT::JFit::move ( const double  step, const double  velocity  )

inline

Move vertex along this track with given velocity.

Parameters

step	step
velocity	velocity

Definition at line 167 of file JReconstruction/JEvt.hh.

    {
      __x += step * __dx;
      __y += step * __dy;
      __z += step * __dz;
      __t += step / velocity;
    }

void JFIT::JFit::setE ( const double  E )

inline

Set energy.

Parameters

E

energy

Definition at line 181 of file JReconstruction/JEvt.hh.

    {
      __E = E;
    }

size_t JFIT::JFit::getDimensionOfErrorMatrix ( ) const

inline

Get dimension of error matrix.

Returns

dimension

Definition at line 192 of file JReconstruction/JEvt.hh.

    {
      return ((size_t) sqrt(1.0 + 8.0*V.size()) - 1) / 2;
    }

const std::vector<double>& JFIT::JFit::getV ( ) const

inline

Get error matrix.

Note that only the lower-half of the matrix is returned.

Returns

error matrix

Definition at line 205 of file JReconstruction/JEvt.hh.

    {
      return V;
    }

double JFIT::JFit::getV ( const size_t  row, const size_t  col  ) const

inline

Get element of error matrix.

Parameters

row	row (0 <= row < dimension)
col	col (0 <= col < dimension)

Returns

value

Definition at line 218 of file JReconstruction/JEvt.hh.

    {
      using namespace std;

      const size_t __row = max(row, col) + 1;
      const size_t __col = min(row, col);

      return V.at((__row * (__row + 1)) / 2 - __row + __col);
    }

template<class T >

void JFIT::JFit::setV ( const size_t  size, const T &  data  )

inline

Set error matrix.

The given size corresponds to the dimension of a 2D-array of which the elements should be accessible via the usual array operators.
Note that only the lower-half of the given matrix is stored.

Parameters

size	size
data	matrix

Definition at line 240 of file JReconstruction/JEvt.hh.

    {
      V.clear();

      for (size_t row = 0; row != size; ++row) {
        for (size_t col = 0; col <= row; ++col) {
          V.push_back(data[row][col]);
        }
      }
    }

const std::vector<double>& JFIT::JFit::getW ( ) const

inline

Get associated values.

Returns

values

Definition at line 257 of file JReconstruction/JEvt.hh.

    {
      return this->W;
    }

void JFIT::JFit::setW ( const std::vector< double > &  W )

inline

Set associated values.

Parameters

W

values

Definition at line 268 of file JReconstruction/JEvt.hh.

    {
      this->W = W;
    }

int JFIT::JFit::getN ( ) const

inline

Get number of associated values.

Returns

number of values

Definition at line 279 of file JReconstruction/JEvt.hh.

    { 
      return W.size();
    }

bool JFIT::JFit::hasW ( const int  i ) const

inline

Check availability of value.

Parameters

i

index

Returns

true if available; else false

Definition at line 291 of file JReconstruction/JEvt.hh.

    { 
      return (i >= 0 && i < (int) W.size());
    }

double JFIT::JFit::getW ( const int  i ) const

inline

Get associated value.

Parameters

i

index

Returns

value

Definition at line 303 of file JReconstruction/JEvt.hh.

    { 
      return W.at(i);
    }

double JFIT::JFit::getW ( const int  i, const double  value  ) const

inline

Get associated value.

Parameters

i	index
value	default value

Returns

value

Definition at line 316 of file JReconstruction/JEvt.hh.

    { 
      if (hasW(i))
        return W.at(i);
      else
        return value;
    }

void JFIT::JFit::setW ( const int  i, const double  value  )

inline

Set associated value.

Parameters

i	index
value	value

Definition at line 331 of file JReconstruction/JEvt.hh.

    { 
      if (i >= (int) W.size()) {
        W.resize(i + 1, 0.0);
      }

      W[i] = value;
    }

JFIT::JFit::ClassDef	(	JFit	,
		6
	)

const JHistory& JFIT::JHistory::getHistory ( ) const

inlineinherited

Get history.

Returns

histtory

Definition at line 228 of file JHistory.hh.

    {
      return static_cast<const JHistory&>(*this);
    }

JHistory& JFIT::JHistory::getHistory ( )

inlineinherited

Get history.

Returns

histtory

Definition at line 239 of file JHistory.hh.

    {
      return static_cast<JHistory&>(*this);
    }

JFIT::JHistory::ClassDef ( JHistory  , 1    )

inherited

Member Data Documentation

double JFIT::JFit::__x

protected

Definition at line 344 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__y

protected

Definition at line 345 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__z

protected

Definition at line 346 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__dx

protected

Definition at line 347 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__dy

protected

Definition at line 348 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__dz

protected

Definition at line 349 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__t

protected

Definition at line 350 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__Q

protected

Definition at line 351 of file JReconstruction/JEvt.hh.

int JFIT::JFit::__NDF

protected

Definition at line 352 of file JReconstruction/JEvt.hh.

std::vector<double> JFIT::JFit::V

protected

Definition at line 353 of file JReconstruction/JEvt.hh.

std::vector<double> JFIT::JFit::W

protected

Definition at line 354 of file JReconstruction/JEvt.hh.

double JFIT::JFit::__E

protected

Definition at line 355 of file JReconstruction/JEvt.hh.

int JFIT::JFit::__status

protected

Definition at line 356 of file JReconstruction/JEvt.hh.

---

The documentation for this class was generated from the following file:

• JReconstruction/JEvt.hh