Module org.opengis.geoapi

Package org.opengis.referencing.crs

Interface SingleCRS

All Superinterfaces:

CoordinateReferenceSystem, IdentifiedObject, ReferenceSystem

All Known Subinterfaces:

DerivedCRS, EngineeringCRS, GeneralDerivedCRS, GeocentricCRS, GeodeticCRS, GeographicCRS, ImageCRS, ParametricCRS, ProjectedCRS, TemporalCRS, VerticalCRS

All Known Implementing Classes:

SimpleCRS, SimpleCRS.Geographic, SimpleCRS.Temporal, SimpleCRS.Vertical

@Classifier(ABSTRACT)
@UML(identifier="SC_SingleCRS",
     specification=ISO_19111)
public interface SingleCRS
extends CoordinateReferenceSystem

Base type of coordinate systems related to an object by a datum. For geodetic and vertical datums, the object will be the Earth.

The valid coordinate system type and the datum type are constrained by the CRS type. For example, GeographicCRS can be associated only to EllipsoidalCS and GeodeticDatum.

Since:

2.0

See Also:

• CoordinateSystem
• Datum

Field Summary

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Fields inherited from interface ReferenceSystem

DOMAIN_OF_VALIDITY_KEY, SCOPE_KEY

Method Summary

Modifier and Type	Method	Description
CoordinateSystem	getCoordinateSystem()	Returns the coordinate system associated to this CRS.
Datum	getDatum()	Returns the datum associated directly or indirectly to this CRS.

Methods inherited from interface IdentifiedObject

getAlias, getIdentifiers, getName, getRemarks, toWKT

Methods inherited from interface ReferenceSystem

getDomainOfValidity, getScope

Method Details

getCoordinateSystem

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

Returns the coordinate system associated to this CRS.

Specified by:

getCoordinateSystem in interface CoordinateReferenceSystem

Returns:

the coordinate system.

getDatum

@UML(identifier="datum",
     obligation=CONDITIONAL,
     specification=ISO_19111)
Datum getDatum()

Returns the datum associated directly or indirectly to this CRS. In the case of GeneralDerivedCRS, this method returns the datum of the base CRS.

Returns:

the datum.

Departure from OGC/ISO abstract specification:

Extension for convenience without introduction of new functionality

The ISO specification declares the datum as absent when the association is indirect. GeoAPI recommends to follow the link to the base CRS for users convenience.