polygonize

描述

¥Description

将 (多个)LineString(s) 多边形化为 多边形。

¥Polygonizes (Multi)LineString(s) into Polygons.

GEOSPolygonize 函数 (geos::operation::polygonize::Polygonizer) 的实现。

¥Implementation of GEOSPolygonize function (geos::operation::polygonize::Polygonizer).

将表示平面图中边的一组线多边形化。边必须正确节点化，即它们只能在其端点相交。

¥Polygonizes a set of lines that represents edges in a planar graph. Edges must be correctly noded, i.e., they must only meet at their endpoints.

实现正确处理：

¥The implementation correctly handles:

• 悬垂线：一端或两端不与另一端点重合的边。

  ¥Dangles: edges which have one or both ends which are not incident on another edge endpoint.

• 切边（桥）：两端相连但不构成多边形的边。

  ¥Cut Edges (bridges): edges that are connected at both ends but which do not form part of a polygon.

参数

¥Parameters

名称	类型	描述
geoJson	FeatureCollection | 几何图形 | 特性<LineString | MultiLineString>	多边形化所需的线段

返回

¥Returns

FeatureCollection<多边形> 创建的多边形

¥FeatureCollection<Polygon> Polygons created

安装

¥Installation

$ npm install @turf/polygonize

import { polygonize } from "@turf/polygonize";
const result = polygonize(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.polygonize(...);