Helper struct to hold the sum over pileup objects and its covariance. More...

#include <PufitUtils.h>

Collaboration diagram for HLT::MET::PufitUtils::CovarianceSum:

Public Member Functions
	CovarianceSum ()
	Default constructor - zero initialize everything.
	CovarianceSum (const Eigen::Vector2d &sum, const Eigen::Matrix2d &covariance)
	Construct with an existing sum and matrix.
CovarianceSum &	add (const SignedKinematics &kin, double sigma)
	Add a new contribution to the sum.

Public Attributes
Eigen::Vector2d	sum
	The sum.
Eigen::Matrix2d	covariance
	The covariance matrix.

Detailed Description

Helper struct to hold the sum over pileup objects and its covariance.

Definition at line 28 of file PufitUtils.h.

Constructor & Destructor Documentation

◆ CovarianceSum() [1/2]

HLT::MET::PufitUtils::CovarianceSum::CovarianceSum ( )

Default constructor - zero initialize everything.

Definition at line 16 of file PufitUtils.cxx.

                                   : sum(Eigen::Vector2d::Zero()),
                                       covariance(Eigen::Matrix2d::Zero())
      {
      }

◆ CovarianceSum() [2/2]

HLT::MET::PufitUtils::CovarianceSum::CovarianceSum	(	const Eigen::Vector2d &	sum,
		const Eigen::Matrix2d &	covariance )

Construct with an existing sum and matrix.

Definition at line 21 of file PufitUtils.cxx.

23 : sum(sum), covariance(covariance) {}

Member Function Documentation

◆ add()

CovarianceSum & HLT::MET::PufitUtils::CovarianceSum::add	(	const SignedKinematics &	kin,
		double	sigma )

Add a new contribution to the sum.

kin The kinematics of the contribution

sigma The resolution of the contribution

Definition at line 25 of file PufitUtils.cxx.

      {
        Eigen::Vector2d cosSin(kin.cosPhi(), kin.sinPhi());
        sum += Eigen::Vector2d(kin.px(), kin.py());
        covariance += sigma * cosSin * cosSin.transpose();
        return *this;
      }

Member Data Documentation

◆ covariance

Eigen::Matrix2d HLT::MET::PufitUtils::CovarianceSum::covariance

The covariance matrix.

Definition at line 43 of file PufitUtils.h.

◆ sum

Eigen::Vector2d HLT::MET::PufitUtils::CovarianceSum::sum

The sum.

Definition at line 41 of file PufitUtils.h.

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

Public Member Functions

Public Attributes