@turf/convex
convex
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
geojson
GeoJSON input Feature or FeatureCollectionoptions
Object Optional parameters (optional, default {}
)
options.concavity
number 1 - thin shape. Infinity - convex hull. (optional, default Infinity
)options.properties
Object Translate Properties to Feature (optional, default {}
)
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);
var addToMap = [points, hull]
Returns Feature<Polygon> a convex hull
This module is part of the Turfjs project, an open source
module collection dedicated to geographic algorithms. It is maintained in the
Turfjs/turf repository, where you can create
PRs and issues.
Installation
Install this module individually:
$ npm install @turf/convex
Or install the Turf module that includes it as a function:
$ npm install @turf/turf