RooBinIntegrator Class Reference

Computes the integral over a binned distribution by summing the bin contents of all bins.

Definition at line 24 of file RooBinIntegrator.h.

Public Member Functions
	RooBinIntegrator (const RooAbsFunc &function, const RooNumIntConfig &config)
	Construct integrator on given function binding binding.
	RooBinIntegrator (const RooAbsFunc &function, int numBins=100)
	Construct integrator on given function binding binding.
bool	checkLimits () const override
	Check that our integration range is finite and otherwise return false.
double	integral (const double *yvec=nullptr) override
	Calculate numeric integral at given set of function binding parameters.
virtual bool	setLimits (double *, double *)
bool	setLimits (double *xmin, double *xmax) override
	Change our integration limits.
virtual bool	setLimits (double xmin, double xmax)
	Interface to set limits on integration.
bool	setUseIntegrandLimits (bool flag) override
	Interface function that allows to defer limit definition to integrand definition.
Public Member Functions inherited from RooAbsIntegrator
	RooAbsIntegrator ()
	RooAbsIntegrator (const RooAbsFunc &function, bool printEvalCounter=false)
	Copy constructor.
virtual	~RooAbsIntegrator ()=default
double	calculate (const double *yvec=nullptr)
	Calculate integral value with given array of parameter values.
const RooAbsFunc *	integrand () const
	Return integrand function binding.
double	integrand (const double x[]) const
	Return value of integrand at given observable values.
bool	isValid () const
	Is integrator in valid state.
bool	printEvalCounter () const
void	setPrintEvalCounter (bool value)

Protected Member Functions
	RooBinIntegrator (const RooBinIntegrator &)
double *	xvec (double xx)
double *	xvec (double xx, double yy)
double *	xvec (double xx, double yy, double zz)

Static Protected Member Functions
static void	registerIntegrator (RooNumIntFactory &fact)
	Register RooBinIntegrator, is parameters and capabilities with RooNumIntFactory.

Protected Attributes
std::vector< std::vector< double > >	_binb
	! list of bin boundaries
Int_t	_numBins = 0
	! Size of integration range
bool	_useIntegrandLimits = false
	If true limits of function binding are ued.
std::vector< double >	_x
	! do not persist
std::vector< double >	_xmax
	! Upper integration bound
std::vector< double >	_xmin
	! Lower integration bound
Protected Attributes inherited from RooAbsIntegrator
const RooAbsFunc *	_function = nullptr
	Pointer to function binding of integrand.
bool	_printEvalCounter = false
	If true print number of function evaluation required for integration.
bool	_valid = false
	Is integrator in valid state?

Friends
class	RooNumIntFactory

#include </home/sftnight/build/workspace/root-makedoc-master/rootspi/rdoc/src/master/roofit/roofitcore/src/RooBinIntegrator.h>

Inheritance diagram for RooBinIntegrator:

Constructor & Destructor Documentation

RooBinIntegrator() [1/3]

RooBinIntegrator::RooBinIntegrator	(	const RooAbsFunc &	function,
		int	numBins = 100
	)

Construct integrator on given function binding binding.

Definition at line 73 of file RooBinIntegrator.cxx.

RooBinIntegrator() [2/3]

RooBinIntegrator::RooBinIntegrator	(	const RooAbsFunc &	function,
		const RooNumIntConfig &	config
	)

Construct integrator on given function binding binding.

Definition at line 110 of file RooBinIntegrator.cxx.

RooBinIntegrator() [3/3]

RooBinIntegrator::RooBinIntegrator ( const RooBinIntegrator &  )

protected

Member Function Documentation

checkLimits()

bool RooBinIntegrator::checkLimits ( ) const

overridevirtual

Check that our integration range is finite and otherwise return false.

Update the limits from the integrand if requested.

Reimplemented from RooAbsIntegrator.

Definition at line 137 of file RooBinIntegrator.cxx.

integral()

double RooBinIntegrator::integral ( const double *  yvec = nullptr )

overridevirtual

Calculate numeric integral at given set of function binding parameters.

Implements RooAbsIntegrator.

Definition at line 164 of file RooBinIntegrator.cxx.

registerIntegrator()

void RooBinIntegrator::registerIntegrator ( RooNumIntFactory &  fact )

staticprotected

Register RooBinIntegrator, is parameters and capabilities with RooNumIntFactory.

Definition at line 50 of file RooBinIntegrator.cxx.

setLimits() [1/3]

virtual bool RooAbsIntegrator::setLimits ( double *  , double *    )

inlinevirtual

Reimplemented from RooAbsIntegrator.

Definition at line 54 of file RooAbsIntegrator.h.

setLimits() [2/3]

bool RooBinIntegrator::setLimits ( double *  xmin, double *  xmax  )

overridevirtual

Change our integration limits.

Return true if the new limits are ok, or otherwise false. Always returns false and does nothing if this object was constructed to always use our integrand's limits.

Reimplemented from RooAbsIntegrator.

Definition at line 121 of file RooBinIntegrator.cxx.

setLimits() [3/3]

bool RooAbsIntegrator::setLimits ( double  xmin, double  xmax  )

virtual

Interface to set limits on integration.

Reimplemented from RooAbsIntegrator.

Definition at line 55 of file RooAbsIntegrator.cxx.

setUseIntegrandLimits()

bool RooBinIntegrator::setUseIntegrandLimits ( bool  flag )

inlineoverridevirtual

Interface function that allows to defer limit definition to integrand definition.

Reimplemented from RooAbsIntegrator.

Definition at line 36 of file RooBinIntegrator.h.

xvec() [1/3]

double * RooBinIntegrator::xvec ( double  xx )

inlineprotected

Definition at line 55 of file RooBinIntegrator.h.

xvec() [2/3]

double * RooBinIntegrator::xvec ( double  xx, double  yy  )

inlineprotected

Definition at line 60 of file RooBinIntegrator.h.

xvec() [3/3]

double * RooBinIntegrator::xvec ( double  xx, double  yy, double  zz  )

inlineprotected

Definition at line 66 of file RooBinIntegrator.h.

Friends And Related Symbol Documentation

RooNumIntFactory

friend class RooNumIntFactory

friend

Definition at line 43 of file RooBinIntegrator.h.

Member Data Documentation

_binb

std::vector<std::vector<double> > RooBinIntegrator::_binb

protected

! list of bin boundaries

Definition at line 50 of file RooBinIntegrator.h.

_numBins

Int_t RooBinIntegrator::_numBins = 0

mutableprotected

! Size of integration range

Definition at line 51 of file RooBinIntegrator.h.

_useIntegrandLimits

bool RooBinIntegrator::_useIntegrandLimits = false

protected

If true limits of function binding are ued.

Definition at line 53 of file RooBinIntegrator.h.

_x

std::vector<double> RooBinIntegrator::_x

protected

! do not persist

Definition at line 74 of file RooBinIntegrator.h.

_xmax

std::vector<double> RooBinIntegrator::_xmax

mutableprotected

! Upper integration bound

Definition at line 49 of file RooBinIntegrator.h.

_xmin

std::vector<double> RooBinIntegrator::_xmin

mutableprotected

! Lower integration bound

Definition at line 48 of file RooBinIntegrator.h.