polygonize

Description

Polygonizes (Multi)LineString(s) into Polygons.

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

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.

The implementation correctly handles:

• Dangles: edges which have one or both ends which are not incident on another edge endpoint.
• Cut Edges (bridges): edges that are connected at both ends but which do not form part of a polygon.

Parameters

Name	Type	Description
geoJson	FeatureCollection | Geometry | Feature<LineString | MultiLineString>	Lines in order to polygonize

Returns

FeatureCollection<Polygon> Polygons created

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(...);