org.opentripplanner.util

Class ElevationUtils

java.lang.Object

org.opentripplanner.util.ElevationUtils

public class ElevationUtils
extends Object

Created by demory on 2/16/17.

Constructor Summary

Constructors

Constructor and Description
ElevationUtils()

Method Summary

Modifier and Type	Method and Description
static double	computeEllipsoidToGeoidDifference(double lat, double lon) Computes the difference between the ellipsoid and geoid at a specified lat/lon using Geotools EarthGravitationalModel.

Methods inherited from class java.lang.Object

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

Constructor Detail

ElevationUtils

public ElevationUtils()

Method Detail

computeEllipsoidToGeoidDifference

public static double computeEllipsoidToGeoidDifference(double lat,
                                                       double lon)
                                                throws org.opengis.referencing.operation.TransformException

Computes the difference between the ellipsoid and geoid at a specified lat/lon using Geotools EarthGravitationalModel. For unknown reasons, this method can produce incorrect results if called at the same time from multiple threads, so the method has been made synchronized.

Parameters:

lat -

lon -

Returns:

difference in meters

Throws:

org.opengis.referencing.FactoryException

org.opengis.referencing.operation.TransformException