fact.features

Class TimeGradient

java.lang.Object

fact.features.TimeGradient

All Implemented Interfaces:

stream.Processor

public class TimeGradient
extends Object
implements stream.Processor

This processor calculates the timing gradient along the longitudinal and the transversal axis of the shower. Therefore the ellipse coordinates ({l,t}) are calculated and the function arrTime(l)=s_l*l + i_l and arrTime(t)=s_t*t + i_t are fitted. The parameters (s_l,i_l,s_t,i_t) of the fits, their standard deviation and the sum squared errors of the fits are pushed in the data item.

Author:

Fabian Temme

Field Summary

Fields

Modifier and Type	Field and Description
String	arrivalTimeKey
String	cogKey
String	deltaKey
String	outputKeyIntercept
String	outputKeySlope
String	outputKeySumSquaredErrors
String	pixelSetKey

Constructor Summary

Constructors

Constructor and Description
TimeGradient()

Method Summary

Modifier and Type	Method and Description
stream.Data	process(stream.Data item)

Methods inherited from class java.lang.Object

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

Field Detail

pixelSetKey

@Parameter(required=true,
           description="key to the shower pixels")
public String pixelSetKey

arrivalTimeKey

@Parameter(required=true,
           description="key to the arrival times of all pixels")
public String arrivalTimeKey

cogKey

@Parameter(required=true,
           description="key to the xvalue of the cog of the shower")
public String cogKey

deltaKey

@Parameter(required=true,
           description="key to the delta angle of the shower")
public String deltaKey

outputKeySlope

@Parameter(description="outputKey for the calculated timegradient slopes")
public String outputKeySlope

outputKeyIntercept

@Parameter(description="outputKey for the calculated timegradient intercepts")
public String outputKeyIntercept

outputKeySumSquaredErrors

@Parameter(description="outputKey for the sum squared errors of the linear fits")
public String outputKeySumSquaredErrors

Constructor Detail

TimeGradient

public TimeGradient()

Method Detail

process

public stream.Data process(stream.Data item)

Specified by:

process in interface stream.Processor