Package org.geotools.jackson.datatype.projjson.model

Class GeographicCRS

Object

AbstractCRS

GeographicCRS

All Implemented Interfaces:

CoordinateReferenceSystem

public class GeographicCRS
extends AbstractCRS

Represents a Geographic Coordinate Reference System in PROJJSON.

A geographic CRS is a coordinate reference system based on an ellipsoidal approximation of the Earth's surface. Coordinates are expressed in angular units (degrees or radians).

Example PROJJSON representation:

 {
   "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
   "type": "GeographicCRS",
   "name": "WGS 84",
   "datum": {
     "type": "GeodeticReferenceFrame",
     "name": "World Geodetic System 1984",
     "ellipsoid": {
       "name": "WGS 84",
       "semi_major_axis": 6378137,
       "inverse_flattening": 298.257223563
     }
   },
   "coordinate_system": {
     "type": "ellipsoidal",
     "axes": [
       {
         "name": "Geodetic latitude",
         "abbreviation": "Lat",
         "direction": "north",
         "unit": "degree"
       },
       {
         "name": "Geodetic longitude",
         "abbreviation": "Lon",
         "direction": "east",
         "unit": "degree"
       }
     ]
   },
   "id": {
     "authority": "EPSG",
     "code": 4326
   }
 }
 

Constructor Summary

Constructors

Constructor	Description
GeographicCRS()	Creates a new GeographicCRS with default values.

Method Summary

Modifier and Type	Method	Description
CoordinateSystem	getCoordinateSystem()	Gets the coordinate system that describes how coordinates are expressed.
GeodeticReferenceFrame	getDatum()	Gets the geodetic datum defining this geographic CRS.
String	getType()	Gets the type of coordinate reference system.
void	setCoordinateSystem(CoordinateSystem coordinateSystem)	Sets the coordinate system that describes how coordinates are expressed.
void	setDatum(GeodeticReferenceFrame datum)	Sets the geodetic datum defining this geographic CRS.

Methods inherited from class AbstractCRS

getArea, getBbox, getId, getName, getRemarks, getScope, setArea, setBbox, setId, setName, setRemarks, setScope

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GeographicCRS

public GeographicCRS()

Creates a new GeographicCRS with default values.

Method Details

getType

public String getType()

Gets the type of coordinate reference system.

Returns:

Always "GeographicCRS" for this implementation

getDatum

public GeodeticReferenceFrame getDatum()

Gets the geodetic datum defining this geographic CRS.

Returns:

The geodetic reference frame

setDatum

public void setDatum(GeodeticReferenceFrame datum)

Sets the geodetic datum defining this geographic CRS.

Parameters:

datum - The geodetic reference frame

getCoordinateSystem

public CoordinateSystem getCoordinateSystem()

Gets the coordinate system that describes how coordinates are expressed.

Returns:

The coordinate system

setCoordinateSystem

public void setCoordinateSystem(CoordinateSystem coordinateSystem)

Sets the coordinate system that describes how coordinates are expressed.

Parameters:

coordinateSystem - The coordinate system