# Uses of Package
org.apache.sis.referencing.crs

- Packages that use org.apache.sis.referencing.crs
  Package | Description
  --- | ---
  org.apache.sis.referencing.crs | Coordinate Reference System (CRS) definitions as coordinate systems related to the earth through datum.
  org.apache.sis.referencing.factory | Creates Coordinate Reference System (CRS) objects from given properties or authority codes.

- Classes in org.apache.sis.referencing.crs used by org.apache.sis.referencing.crs
  Class | Description
  --- | ---
  AbstractCRS | Coordinate reference system, defined by a coordinate system and (usually) a datum.
  DefaultCompoundCRS | A CRS describing the position of points through two or more independent coordinate reference systems.
  DefaultDerivedCRS | A coordinate reference system that is defined by its coordinate conversion from another CRS (not by a datum).
  DefaultEngineeringCRS | A 1-, 2- or 3-dimensional contextually local coordinate reference system.
  DefaultGeocentricCRS | A 3-dimensional coordinate reference system with the origin at the approximate centre of mass of the earth.
  DefaultGeographicCRS | A 2- or 3-dimensional coordinate reference system based on an ellipsoidal approximation of the geoid.
  DefaultImageCRS | A 2-dimensional engineering coordinate reference system applied to locations in images.
  DefaultParametricCRS | A 1-dimensional coordinate reference system which uses parameter values or functions.
  DefaultProjectedCRS | A 2-dimensional coordinate reference system used to approximate the shape of the earth on a planar surface.
  DefaultTemporalCRS | A 1-dimensional coordinate reference system used for the recording of time.
  DefaultVerticalCRS | A 1-dimensional coordinate reference system used for recording heights or depths.

- Classes in org.apache.sis.referencing.crs used by org.apache.sis.referencing.factory
  Class | Description
  --- | ---
  DefaultParametricCRS | A 1-dimensional coordinate reference system which uses parameter values or functions.