Interface GeographicCRS

All Superinterfaces:

Coordinate­Reference­System, Geodetic­CRS, Identified­Object, Reference­System, Single­CRS

All Known Implementing Classes:

Default­Geographic­CRS

@UML(identifier="SC_GeographicCRS",
     specification=ISO_19111)
public interface GeographicCRS
extends GeodeticCRS

A coordinate reference system based on an ellipsoidal approximation of the geoid; this provides an accurate representation of the geometry of geographic features for a large portion of the earth's surface.

A Geographic CRS is not suitable for mapmaking on a planar surface, because it describes geometry on a curved surface. It is impossible to represent such geometry in a Euclidean plane without introducing distortions. The need to control these distortions has given rise to the development of the science of map projections.

Used with CS type(s)
Ellipsoidal

Since:

1.0

Field Summary

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Modifier and Type	Field	Description
static final String	ALIAS_KEY	Key for the "alias" property to be given to the object factory create­Foo(…) methods.
static final String	IDENTIFIERS_KEY	Key for the "identifiers" property to be given to the object factory create­Foo(…) methods.
static final String	NAME_KEY	Key for the "name" property to be given to the object factory create­Foo(…) methods.
static final String	REMARKS_KEY	Key for the "remarks" property to be given to the object factory create­Foo(…) methods.

Fields inherited from interface ReferenceSystem

DOMAIN_OF_VALIDITY_KEY, SCOPE_KEY

Modifier and Type	Field	Description
static final String	DOMAIN_OF_VALIDITY_KEY	Key for the "domain­Of­Validity" property to be given to the object factory create­Foo(…) methods.
static final String	SCOPE_KEY	Key for the "scope" property to be given to the object factory create­Foo(…) methods.

Method Summary

Modifier and Type	Method	Description
Ellipsoidal­CS	get­Coordinate­System()	Returns the coordinate system, which must be ellipsoidal.

Methods inherited from interface GeodeticCRS

get­Datum

Modifier and Type	Method	Description
Geodetic­Datum	get­Datum()	Returns the datum, which must be geodetic.

Methods inherited from interface IdentifiedObject

get­Alias, get­Identifiers, get­Name, get­Remarks, to­WKT

Modifier and Type	Method	Description
Collection<Generic­Name>	get­Alias()	An alternative name by which this object is identified.
Set<Reference­Identifier>	get­Identifiers()	An identifier which references elsewhere the object's defining information.
Reference­Identifier	get­Name()	The primary name by which this object is identified.
International­String	get­Remarks()	Comments on or information about this object, including data source information.
String	to­WKT()	Returns a Well Known Text (WKT) for this object.

Methods inherited from interface ReferenceSystem

get­Domain­Of­Validity, get­Scope

Modifier and Type	Method	Description
Extent	get­Domain­Of­Validity()	Area or region or timeframe in which this (coordinate) reference system is valid.
International­String	get­Scope()	Description of domain of usage, or limitations of usage, for which this Reference System object is valid.

Method Details

getCoordinateSystem

@UML(identifier="coordinateSystem",
     obligation=MANDATORY,
     specification=ISO_19111)
EllipsoidalCS getCoordinateSystem()

Returns the coordinate system, which must be ellipsoidal.

Specified by:

get­Coordinate­System in interface Coordinate­Reference­System

Specified by:

get­Coordinate­System in interface Single­CRS

Returns:

The coordinate system.