convex

Description

Takes a Feature or a FeatureCollection and returns a convex hull Polygon.

Internally this uses the convex-hull module that implements a monotone chain hull.

Parameters

Name	Type	Description
geojson	GeoJSON	input Feature or FeatureCollection
options?	Object	Optional parameters (default {})
options.concavity?	number	1 - thin shape. Infinity - convex hull. (default Infinity)
options.properties?	Object	Translate Properties to Feature (default {})

Returns

Feature<Polygon> a convex hull

Examples

var points = turf.featureCollection([
  turf.point([10.195312, 43.755225]),
  turf.point([10.404052, 43.8424511]),
  turf.point([10.579833, 43.659924]),
  turf.point([10.360107, 43.516688]),
  turf.point([10.14038, 43.588348]),
  turf.point([10.195312, 43.755225]),
]);

var hull = turf.convex(points);

Installation

$ npm install @turf/convex

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

$ npm install @turf/turf

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