Package org.locationtech.proj4j

Class CoordinateReferenceSystem

java.lang.Object

org.locationtech.proj4j.CoordinateReferenceSystem

All Implemented Interfaces:

java.io.Serializable

public class CoordinateReferenceSystem
extends java.lang.Object
implements java.io.Serializable

Represents a projected or geodetic geospatial coordinate system, to which coordinates may be referenced. A coordinate system is defined by the following things:

• an Ellipsoid specifies how the shape of the Earth is approximated
• a Datum provides the mapping from the ellipsoid to actual locations on the earth
• a Projection method maps the ellpsoidal surface to a planar space. (The projection method may be null in the case of geodetic coordinate systems).
• a Unit indicates how the ordinate values of coordinates are interpreted

See Also:

CRSFactory, Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static CoordinateReferenceSystem	CS_GEO
private Datum	datum
private java.lang.String	name
private java.lang.String[]	params
private Projection	proj

Constructor Summary

Constructors

Constructor	Description
CoordinateReferenceSystem(java.lang.String name, java.lang.String[] params, Datum datum, Projection proj)

Method Summary

Modifier and Type	Method	Description
CoordinateReferenceSystem	createGeographic()	Creates a geographic (unprojected) CoordinateReferenceSystem based on the Datum of this CRS.
boolean	equals(java.lang.Object that)
Datum	getDatum()
java.lang.String	getName()
java.lang.String[]	getParameters()
java.lang.String	getParameterString()
Projection	getProjection()
int	hashCode()
java.lang.Boolean	isGeographic()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

CS_GEO

public static final CoordinateReferenceSystem CS_GEO

name

private java.lang.String name

params

private java.lang.String[] params

datum

private Datum datum

proj

private Projection proj

Constructor Detail

CoordinateReferenceSystem

public CoordinateReferenceSystem(java.lang.String name,
                                 java.lang.String[] params,
                                 Datum datum,
                                 Projection proj)

Method Detail

getName

public java.lang.String getName()

getParameters

public java.lang.String[] getParameters()

getDatum

public Datum getDatum()

getProjection

public Projection getProjection()

getParameterString

public java.lang.String getParameterString()

isGeographic

public java.lang.Boolean isGeographic()

createGeographic

public CoordinateReferenceSystem createGeographic()

Creates a geographic (unprojected) CoordinateReferenceSystem based on the Datum of this CRS. This is useful for defining CoordinateTransforms to and from geographic coordinate systems, where no datum transformation is required. The Units of the geographic CRS are set to Units.DEGREES.

Returns:

a geographic CoordinateReferenceSystem based on the datum of this CRS

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object that)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object