Topology Relation Table

Each PostGIS topology contains a "relation" table which defines the composition of every TopoGeometry bound to the topology. For each TopoGeometry you have a set of element_type/element_id components. Interpretation of "element_type" depends on layer definition: it is 1:Node, 2:Edge, 3:Face for non-hierarchical layers and a layer identifier for hierarchical layers.

Last modified 12 years ago Last modified on Apr 9, 2012, 8:02:46 AM
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