Schema Central > NIEM 2.1 > topology.xsd > gml:AbstractTopoPrimitive
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gml:AbstractTopoPrimitive acts as the base type for all topological primitives. Topology primitives are the atomic (smallest possible) units of a topology complex. 
Each topology primitive may contain references to other topology primitives of codimension 2 or more (gml:isolated). Conversely, nodes may have faces as containers and nodes and edges may have solids as containers (gml:container).

Element information

Type: gml:AbstractTopoPrimitiveType

Properties: Global, Qualified, Abstract



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

Used in

Substitution hierarchy

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