geoMag

Class MagneticVariation

java.lang.Object

geoMag.MagneticVariation

public class MagneticVariation
extends java.lang.Object

Wrapper class around other available magnetic variation models so that I can switch to other models easily should the need arise. Currently just works with the TSAGeoMag class.

Author:

Doug Gillespie

Method Summary

Methods

Modifier and Type	Method and Description
static MagneticVariation	getInstance()
double	getVariation(GpsData gpsData) Get the magnetic variation for a GPS location and time
double	getVariation(long timeMilliseconds, double dLat, double dLong) Return the magnetic variation for a time and place

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static MagneticVariation getInstance()

getVariation

public double getVariation(GpsData gpsData)

Get the magnetic variation for a GPS location and time

Parameters:

gpsData - gps data (contains time and position information)

Returns:

magnetic variation in degrees

getVariation

public double getVariation(long timeMilliseconds,
                  double dLat,
                  double dLong)

Return the magnetic variation for a time and place

Parameters:

timeMilliseconds - time in Java milliseconds

dLat - latitude in decimal degrees

dLong - longitude in decimal degrees

Returns:

magnetic variation in degrees