Module org.opengis.geoapi

Package org.opengis.referencing.operation

Interface Conversion

All Superinterfaces:

CoordinateOperation, IdentifiedObject, SingleOperation

All Known Subinterfaces:

ConicProjection, CylindricalProjection, PlanarProjection, Projection

@UML(identifier="CC_Conversion",
     specification=ISO_19111)
public interface Conversion
extends SingleOperation

An operation on coordinates that does not include any change of Datum. The best-known example of a coordinate conversion is a map projection. The parameters describing coordinate conversions are defined rather than empirically derived.

Example: conversion from an ellipsoidal coordinate reference system based on the WGS 84 datum to a Cartesian coordinate reference system also based on the WGS 84 datum, or change of units such as from radians to degrees or feet to meters.

Note that some conversions have no parameters.

Since:

1.0

See Also:

• Transformation
• CoordinateOperationFactory.createDefiningConversion(Map, OperationMethod, ParameterValueGroup)

Field Summary

Fields inherited from interface CoordinateOperation

COORDINATE_OPERATION_ACCURACY_KEY, DOMAIN_OF_VALIDITY_KEY, OPERATION_VERSION_KEY, SCOPE_KEY

Fields inherited from interface IdentifiedObject

ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Method Summary

Modifier and Type	Method	Description
default String	getOperationVersion()	This attribute is declared in CoordinateOperation but is not used in a conversion.
CoordinateReferenceSystem	getSourceCRS()	Returns the source CRS.
CoordinateReferenceSystem	getTargetCRS()	Returns the target CRS.

Methods inherited from interface CoordinateOperation

getCoordinateOperationAccuracy, getDomainOfValidity, getMathTransform, getScope

Methods inherited from interface IdentifiedObject

getAlias, getIdentifiers, getName, getRemarks, toWKT

Methods inherited from interface SingleOperation

getMethod, getParameterValues

Method Details

getSourceCRS

@UML(identifier="sourceCRS",
     obligation=OPTIONAL,
     specification=ISO_19111)
CoordinateReferenceSystem getSourceCRS()

Returns the source CRS. Conversions may have a source CRS that is not specified here, but through GeneralDerivedCRS.getBaseCRS() instead.

Specified by:

getSourceCRS in interface CoordinateOperation

Returns:

the source CRS, or null if not available.

See Also:

• getSourceCRS()
• Transformation.getSourceCRS()

getTargetCRS

@UML(identifier="targetCRS",
     obligation=OPTIONAL,
     specification=ISO_19111)
CoordinateReferenceSystem getTargetCRS()

Returns the target CRS. Conversions may have a target CRS that is not specified here, but through GeneralDerivedCRS instead.

Specified by:

getTargetCRS in interface CoordinateOperation

Returns:

the target CRS, or null if not available.

See Also:

• getTargetCRS()
• Transformation.getTargetCRS()

getOperationVersion

@UML(identifier="operationVersion",
     obligation=FORBIDDEN,
     specification=ISO_19111)
default String getOperationVersion()

This attribute is declared in CoordinateOperation but is not used in a conversion.

Specified by:

getOperationVersion in interface CoordinateOperation

Returns:

usually null.