Package org.geotoolkit.referencing.datum

Datum implementations.

See:
Description

Class Summary

AbstractDatum	Specifies the relationship of a coordinate system to the earth, thus creating a coordinate reference system.
BursaWolfParameters	Parameters for a geographic transformation between two datum.
DefaultEllipsoid	Geometric figure that can be used to describe the approximate shape of the earth.
DefaultEngineeringDatum	Defines the origin of an engineering coordinate reference system.
DefaultGeodeticDatum	Defines the location and precise orientation in 3-dimensional space of a defined ellipsoid (or sphere) that approximates the shape of the earth.
DefaultImageDatum	Defines the origin of an image coordinate reference system.
DefaultPrimeMeridian	A prime meridian defines the origin from which longitude values are determined.
DefaultTemporalDatum	A temporal datum defines the origin of a temporal coordinate reference system.
DefaultVerticalDatum	A textual description and/or a set of parameters identifying a particular reference level surface used as a zero-height surface.

Package org.geotoolkit.referencing.datum Description

Datum implementations. An explanation for this package is provided in the OpenGIS® javadoc. The remaining discussion on this page is specific to the Geotk implementation.

Some useful constants defined in this package are:

Geodetic datum:	WGS84
Vertical datum:	GEOIDAL, ELLIPSOIDAL
Temporal datum:	JULIAN, MODIFIED_JULIAN, TRUNCATED_JULIAN, DUBLIN_JULIAN, UNIX
Other datum:	UNKNOWN
Ellipsoids:	WGS84, GRS80, INTERNATIONAL_1924, CLARKE_1866, SPHERE
Prime meridians:	GREENWICH

Some worthy methods defined in this package are:

• DefaultEllipsoid.orthodromicDistance(java.awt.geom.Point2D, java.awt.geom.Point2D)
• DefaultGeodeticDatum.getAffineTransform(org.opengis.referencing.datum.GeodeticDatum, org.opengis.referencing.datum.GeodeticDatum)

Since:

1.2

Version:

3.18

Author:

Martin Desruisseaux (IRD, Geomatys), Cédric Briançon (Geomatys)

Module:

referencing/geotk-referencing (download)