org.openstreetmap.josm.data.projection.datum

Class SevenParameterDatum

java.lang.Object

org.openstreetmap.josm.data.projection.datum.AbstractDatum

org.openstreetmap.josm.data.projection.datum.SevenParameterDatum

All Implemented Interfaces:

Datum

public class SevenParameterDatum
extends AbstractDatum

Datum provides general conversion from one ellipsoid to another. Seven parameters can be specified: - 3D offset - general rotation - scale This method is described by EPSG as EPSG::9606. Also known as Bursa-Wolf.

Field Summary

Fields

Modifier and Type	Field and Description
protected double	dx
protected double	dy
protected double	dz
protected double	rx
protected double	ry
protected double	rz
protected double	s

Fields inherited from class org.openstreetmap.josm.data.projection.datum.AbstractDatum

ellps, name, proj4Id

Constructor Summary

Constructors

Constructor and Description
SevenParameterDatum(java.lang.String name, java.lang.String proj4Id, Ellipsoid ellps, double dx, double dy, double dz, double rx, double ry, double rz, double s)

Method Summary

Modifier and Type	Method and Description
LatLon	fromWGS84(LatLon ll) Convert lat/lon from WGS84 to this datum.
LatLon	toWGS84(LatLon ll) Convert lat/lon from this datum to WGS84 datum.

Methods inherited from class org.openstreetmap.josm.data.projection.datum.AbstractDatum

getEllipsoid, getName, getProj4Id

Methods inherited from class java.lang.Object

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

Field Detail

dx

protected double dx

dy

protected double dy

dz

protected double dz

rx

protected double rx

ry

protected double ry

rz

protected double rz

s

protected double s

Constructor Detail

SevenParameterDatum

public SevenParameterDatum(java.lang.String name,
                           java.lang.String proj4Id,
                           Ellipsoid ellps,
                           double dx,
                           double dy,
                           double dz,
                           double rx,
                           double ry,
                           double rz,
                           double s)

Parameters:

name - name of the datum

proj4Id - Proj.4 identifier for this datum (or null)

ellps - the ellipsoid used

dx - x offset in meters

dy - y offset in meters

dz - z offset in meters

rx - rotational parameter in seconds of arc

ry - rotational parameter in seconds of arc

rz - rotational parameter in seconds of arc

s - scale change in parts per million

Method Detail

toWGS84

public LatLon toWGS84(LatLon ll)

Description copied from interface: Datum

Convert lat/lon from this datum to WGS84 datum.

fromWGS84

public LatLon fromWGS84(LatLon ll)

Description copied from interface: Datum

Convert lat/lon from WGS84 to this datum.