Package org.opengis.referencing.crs
Interface DerivedCRS
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- All Superinterfaces:
CoordinateReferenceSystem
,GeneralDerivedCRS
,IdentifiedObject
,ReferenceSystem
,SingleCRS
@UML(identifier="SC_DerivedCRS", specification=ISO_19111) public interface DerivedCRS extends GeneralDerivedCRS
A coordinate reference system that is defined by its coordinate conversion from another CRS but is not a projected CRS. This category includes coordinate reference systems derived from a projected CRS.A
DerivedCRS
instance may also implement one of the interfaces listed below, provided that the conditions in the right column are meet:Derived CRS types Type Conditions GeodeticCRS
Base CRS is also a GeodeticCRS
.VerticalCRS
Base CRS is also a VerticalCRS
.TemporalCRS
Base CRS is also a TemporalCRS
.EngineeringCRS
Base CRS is a GeodeticCRS
,ProjectedCRS
orEngineeringCRS
.- Since:
- 1.0
- See Also:
CRSAuthorityFactory.createDerivedCRS(String)
,CRSFactory.createDerivedCRS(Map, CoordinateReferenceSystem, Conversion, CoordinateSystem)
Departure from OGC/ISO specification:
ISO 19111 defines aSC_DerivedCRSType
code list with the following values:geodetic
,vertical
,engineering
andimage
. But ISO 19162 takes a slightly different approach without such code list. Instead, ISO 19162 writes the derived CRS using the WKT keyword of the corresponding CRS type (“GeodCRS”
,“VertCRS”
,“TimeCRS”
or“EngCRS”
). GeoAPI follows a similar path by not providing aDerivedCRSType
code list. Instead, we recommend to implement the corresponding interface as documented in the above table. Then, Java expressions like(baseCRS instanceof FooCRS)
provides the same capability than the code list with more flexibility. For example it allows to use a derived CRS of type “vertical” with API expecting an instance ofVerticalCRS
.
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Field Summary
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Fields inherited from interface IdentifiedObject
ALIAS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY
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Fields inherited from interface ReferenceSystem
DOMAIN_OF_VALIDITY_KEY, SCOPE_KEY
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Method Summary
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Methods inherited from interface GeneralDerivedCRS
getBaseCRS, getConversionFromBase
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Methods inherited from interface IdentifiedObject
getAlias, getIdentifiers, getName, getRemarks, toWKT
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Methods inherited from interface ReferenceSystem
getDomainOfValidity, getScope
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Methods inherited from interface SingleCRS
getCoordinateSystem, getDatum
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