Schema Central > NIEM 3.1 > topology.xsd > gml:TopoSurface
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gml:TopoSurface represents a homogeneous topological expression, a set of directed faces, which if realised are isomorphic to a geometric surface primitive. The intended use of gml:TopoSurface is to appear within a surface feature to express the structural and possibly geometric relationships of this surface feature to other features via the shared face definitions.

Element information

Type: gml:TopoSurfaceType

Properties: Global, Qualified



gml:id [1..1]xsd:IDThe attribute gml:id supports provision of a handle for the XML element representing a GML Object. Its use is mandatory for all GML objects. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs.from type gml:AbstractGMLType
aggregationType [0..1]gml:AggregationTypefrom group gml:AggregationAttributeGroup

Used in

Sample instance

<gml:TopoSurface gml:id="ID">
      <gml:GenericMetaData>Any text, intermingled with:
         <!--any element-->
   <gml:identifier codeSpace="">string</gml:identifier>
      <gml:Face gml:id="ID">
         <gml:identifier codeSpace="">string</gml:identifier>

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