程序包 org.locationtech.proj4j

类 CoordinateReferenceSystem

java.lang.Object

org.locationtech.proj4j.CoordinateReferenceSystem

所有已实现的接口:

Serializable

public class CoordinateReferenceSystem
extends Object
implements 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

作者:

Martin Davis

另请参阅:

CRSFactory, 序列化表格

字段概要

字段

限定符和类型	字段	说明
static CoordinateReferenceSystem	CS_GEO

构造器概要

构造器

构造器	说明
CoordinateReferenceSystem(String name, String[] params, Datum datum, Projection proj)

方法概要

限定符和类型	方法	说明
CoordinateReferenceSystem	createGeographic()	Creates a geographic (unprojected) CoordinateReferenceSystem based on the Datum of this CRS.
Datum	getDatum()
String	getName()
String[]	getParameters()
String	getParameterString()
Projection	getProjection()
Boolean	isGeographic()
String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

CS_GEO

public static final CoordinateReferenceSystem CS_GEO

构造器详细资料

CoordinateReferenceSystem

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

方法详细资料

getName

public String getName()

getParameters

public String[] getParameters()

getDatum

public Datum getDatum()

getProjection

public Projection getProjection()

getParameterString

public String getParameterString()

isGeographic

public 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.

返回:

a geographic CoordinateReferenceSystem based on the datum of this CRS

toString

public String toString()

覆盖:

toString 在类中 Object