#include <eic-smear/blob/master/include/eicsmear/smear/Distributor.h>

Public Member Functions
	Distributor ()

	Distributor (const TString &formula, double lower, double upper, double minimum=-1.e6, double maximum=1.e6)

virtual	~Distributor ()

virtual double	Generate (double midpoint, double width)

Protected Attributes
double	mPlus

double	mMinus

TF1 *	mDistribution

Detailed Description

Distribution function for random sampling. Used by devices to generate smearing on some distribution. By default, smearing is generated on a Gaussian of which the Monte Carlo value is the mean, and the standard deviation is given by the device parametrization. It is intended that you access this object via the methods provided in the Device class.

Definition at line 32 of file Distributor.h.

View newest version in sPHENIX GitHub at line 32 of file Distributor.h

Constructor & Destructor Documentation

Smear::Distributor::Distributor ( )

Default constructor. Gaussian distribution.

Definition at line 18 of file Distributor.cxx.

View newest version in sPHENIX GitHub at line 18 of file Distributor.cxx

Smear::Distributor::Distributor	(	const TString &	formula,
		double	lower,
		double	upper,
		double	minimum = `-1.e6`,
		double	maximum = `1.e6`
	)

Initialise with a ROOT::TF1-style string. The function should depend on two parameters, the first of which specifies the function midpoint and the second of which species a width. See ROOT::TF1 documentation for details of the string format. For example, for a step function, one could use Distributor("abs(x-[0])<[1]"); where [0] stands for the first parameter (midpoint) and [1] is the second parameter (width). The second and third arguments limit the range of thrown values around the midpoint to [midpoint - lower, midpoint + upper]. Values of <= 0 give no limit. The 4th and 5th arguments define the valid range of the function.

Definition at line 24 of file Distributor.cxx.

View newest version in sPHENIX GitHub at line 24 of file Distributor.cxx

References mDistribution, mMinus, and mPlus.

Smear::Distributor::~Distributor ( )

virtual

Destructor.

Definition at line 38 of file Distributor.cxx.

View newest version in sPHENIX GitHub at line 38 of file Distributor.cxx

References mDistribution.