Package org.opengis.referencing

Reference systems.

See:
Description

Interface Summary

AuthorityFactory	Base interface for all authority factories.
Factory	Base interface for all factories of Info objects.
Identifier	An identification of a CRS object.
Info	A base interface for metadata applicable to reference system objects.
ReferenceSystem	Description of a spatial and temporal reference system used by a dataset.
SpatialReferenceSystemUsingGeographicIdentifier	Spatial reference system using geographic identifier, a reference to a feature with a known spatial location.

Exception Summary

FactoryException	Thrown when a factory can't create an instance of the requested object.
NoSuchAuthorityCodeException	Thrown when an authority factory can't find the requested authority code.
NoSuchClassificationException	Thrown when a math transform was requested with an unknow classification name.

Package org.opengis.referencing Description

Reference systems. The following is adapted from OpenGIS® Spatial Referencing by Coordinates (Topic 2) specification.

A reference system contains the metadata required to interpret spatial location information unambiguously. The description of an object's attributes can be done explicitly, by providing all defining parameters, or by identifier, a reference to a recognised source that contains a full description of the object. The Identifier can be used to specify alternative names or aliases of the object defined.

Well-Known Text format

Many entities in this specification can be printed in a well-known text format. This allows objects to be stored in databases (persistence), and transmitted between interoperating computer programs. The definition for WKT is shown using Extended Backus Naur Form (EBNF).