6
Copyright © 2014 Open Geospatial Consortium
Educational facility type a
b ]]
displayName value
[CDATA[ a href=https:www.dgiwg.orgFADfddview?i=103456Schoola
a href=b3Building-3a ]]
value Data
ExtendedData
Advantages: - no schema required
- easy to parse - display information available for KML clients CDATA-wrapped
Disadvantages: - only simple types
- display names have to be repeated for every feature instance - no type information
5.1.1.3 Building-2: Test feature using kml:Schema and kml:SchemaData
Similar four data elements to the ones in Bulding-1 above have been specified, in addition some elements which are in the substitution group of kml:SchemaDataExtension
in the instance or kml:SchemaExtension in the schema description are added. These are just name-value-pairs without any differentiation of types. An optional display name
can be provided with HTML tag to show how the data element should be presented.
ExtendedData SchemaData schemaUrl=BuildingTypeId
xmlns:test=http:www.opengis.netows7test SimpleData name=type
[CDATA[ a href=https:www.dgiwg.orgFADfddview?i=111415Buildinga
]] SimpleData
SimpleData name=height54 ftSimpleData SimpleData name=stories3SimpleData
SimpleData name=building type [CDATA[
a href=https:www.dgiwg.orgFADfddview?i=103456Schoola a href=b3Building-3a
]]
SimpleData test:element1Testtest:element1
test:element2 attribut=test
Copyright © 2014 Open Geospatial Consortium
7
test:element3 test:element4 uom=m45.2test:element4
test:element3 test:refhttp:www.opengeospatial.orgtest:ref
SchemaData ExtendedData
where the schema referenced from schemaUrl is specified as
Schema name=Building id=BuildingTypeId xmlns:test=http:www.opengis.netows7test
SimpleField type=string name=type displayName[CDATA[bTypeb]]displayName
SimpleField SimpleField type=string name=height
displayName[CDATA[bHeightb]]displayName SimpleField
SimpleField type=double name=stories displayName[CDATA[bStoriesb]]displayName
SimpleField SimpleField type=string name=building type
displayName [CDATA[
ba href=https:www.dgiwg.orgFADfddview?i=100853Educational facility typeab
]] displayName
SimpleField test:TestField name=element1
test:TestField name=element2 test:TestField name=element3
test:TestField name=ref Schema
Advantages: - no external schema required
- display information only needs to be provided once in kml:Schema - easy to parse
- display information available for KML clients CDATA-wrapped - can be extended
Disadvantages: - only simple types
- limited type information
5.1.1.4 Building-3: Test feature using predefined elements
Finally, we encoded XML elements from an existing schema in an instance:
ExtendedData xmlns:test=http:www.opengis.netows7test test:element1Testtest:element1
