Schema Central > NIEM 2.1 > temporalTopology.xsd > gml:TimeTopologyComplex
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A temporal topology complex shall be the connected acyclic directed graph composed of temporal topological primitives, i.e. time nodes and time edges. Because a time edge may not exist without two time nodes on its boundaries, static features have time edges from a temporal topology complex as the values of their temporal properties, regardless of explicit declarations.
A temporal topology complex expresses a linear or a non-linear graph. A temporal linear graph, composed of a sequence of time edges, provides a lineage described only by "substitution" of feature instances or feature element values. A time node as the start or the end of the graph connects with at least one time edge. A time node other than the start and the end shall connect to at least two time edges: one of starting from the node, and another ending at the node.
A temporal topological complex is a set of connected temporal topological primitives. The member primtives are indicated, either by reference or by value, using the primitive property.

Element information



gml:id [1..1]xsd:IDfrom type gml:AbstractGMLType

Used in

Substitution hierarchy

Sample instance

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

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