Name
TopoGeo_AddLineString — 許容差を使って既存のトポロジにラインストリングを追加し、可能ならエッジ/フェイスを分割します。
Synopsis
SETOF bigint TopoGeo_AddLineString(varchar atopology, geometry aline, float8 tolerance, int max_edges);
説明
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.
![[Note]](../images/note.png)
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この関数を介してロードされたトポロジの統計情報の更新は呼び出し元次第です。maintaining statistics during topology editing and populationをご覧下さい。 |
Availability: 2.0.0
Enhanced: 3.2.0 符号付き識別子を返す機能が追加されました。
Enhanced: 3.7.0 added support for limiting the number of new edges created in the topology.