Module org.opengis.geoapi

Package org.opengis.referencing.cs

Interface SphericalCS

All Superinterfaces:

CoordinateSystem, IdentifiedObject

@UML(identifier="SphericalCS",
     specification=ISO_19111)
public interface SphericalCS
extends CoordinateSystem

A 2- or 3-dimensional coordinate system with one distance measured from the origin and two angular coordinates. In the two-dimensional case, the radius is omitted and may be implicitly an ellipsoid surface. Not to be confused with an EllipsoidalCS based on an ellipsoid "degenerated" into a sphere.

This type of CS can be used by coordinate reference systems of type GeodeticCRS or EngineeringCRS, potentially in combination with DerivedCRS. The following examples describe some possible set of axes for spherical CS used with the above-cited CRS:

Example 1: used with a Geocentric CRS

Axis name	Abbr.	Direction	Unit
Spherical latitude	Θ	AxisDirection.NORTH	degree
Spherical longitude	Ω	AxisDirection.EAST	degree
Geocentric radius	R	AxisDirection.UP	metre

Example 2: used with an Engineering CRS

Axis name	Abbr.	Direction	Unit
Distance	r	AxisDirection.AWAY_FROM	kilometre
Longitude	φ	AxisDirection.COUNTER_CLOCKWISE	degree
Elevation	Θ	AxisDirection.UP	degree

Since:

1.0

See Also:

• CSAuthorityFactory.createSphericalCS(String)
• CSFactory.createSphericalCS(Map, CoordinateSystemAxis, CoordinateSystemAxis, CoordinateSystemAxis)

Field Summary

Fields inherited from interface org.opengis.referencing.IdentifiedObject

ALIAS_KEY, DOMAINS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Method Summary

Methods inherited from interface org.opengis.referencing.cs.CoordinateSystem

getAxis, getDimension

Methods inherited from interface org.opengis.referencing.IdentifiedObject

getAlias, getDomains, getIdentifiers, getName, getRemarks, toWKT