hep.aida.ref.dataSet.binner
Class PoissonBinError

java.lang.Object
  hep.aida.ref.dataSet.binner.PoissonBinError

All Implemented Interfaces:

BinError

public class PoissonBinError

extends Object

implements BinError

This class calculates the error on the bin assuming a Poisson distribution. The error is calculated using the approximation ~ 1 + sqrt( h + 0.75 ) where h is the height of the bin.

Author:

The FreeHEP team @ SLAC.

Source Code:

PoissonBinError.java

Constructor Summary

PoissonBinError()

Method Summary

double	minusError(int entries, double height) Get the minus error on a bin.
double	plusError(int entries, double height) Get the plus error on a bin.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PoissonBinError

public PoissonBinError()

Method Detail

minusError

public double minusError(int entries,
                         double height)

Get the minus error on a bin.

Specified by:

minusError in interface BinError

Parameters:

entries - The entries in the bin.

height - The height of the bin.

Returns:

The minus error.

plusError

public double plusError(int entries,
                        double height)

Get the plus error on a bin.

Specified by:

plusError in interface BinError

Parameters:

entries - The entries in the bin.

height - The height of the bin.

Returns:

The plus error.