TopoGeo_AddLineString — Fügt einen Linienzug unter Berücksichtigung eines Toleranzwerts zu einer Topologie hinzu , wobei Kanten/Maschen dabei aufgetrennt werden können.
SETOF bigint TopoGeo_AddLineString(varchar atopology, geometry aline, float8 tolerance, int max_edges);
Adds a linestring to an existing topology and returns a set of signed edge identifiers forming it up (negative identifies mean the edge goes in the opposite direction of the input linestring).
The given line will snap to existing nodes or edges within given tolerance. Existing edges and faces may be split by the line. New nodes and faces may be added, in addition to new edges.
The returned edge identifiers may be either existing edges or newly created edges as needed to fully represent the input line as closely as possible.
The number of newly created edges (either covering space previously uncovered or resulting from split of existing edges) may be limited by the max_edges parameter.
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Die Aktualisierung von Statistiken über Topologien, die über diese Funktion geladen werden, obliegt dem Aufrufer, siehe maintaining statistics during topology editing and population. |
Verfügbarkeit: 2.0.0
Erweitert: In Version 3.2.0 wurde Unterstützung für die Rückgabe signierter Identifikatoren hinzugefügt.
Enhanced: 3.7.0 added support for limiting the number of new edges created in the topology.
TopoGeo_AddPoint, TopoGeo_AddPolygon, TopoGeo_LoadGeometry, AddEdge, CreateTopology