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    @turf/concave
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    6.5.0 • Public • Published

    @turf/concave

    concave

    Takes a set of points and returns a concave hull Polygon or MultiPolygon. Internally, this uses turf-tin to generate geometries.

    Parameters

    • points FeatureCollection<Point> input points
    • options Object Optional parameters (optional, default {})
      • options.maxEdge number the length (in 'units') of an edge necessary for part of the hull to become concave. (optional, default Infinity)
      • options.units string can be degrees, radians, miles, or kilometers (optional, default 'kilometers')

    Examples

    var points = turf.featureCollection([
      turf.point([-63.601226, 44.642643]),
      turf.point([-63.591442, 44.651436]),
      turf.point([-63.580799, 44.648749]),
      turf.point([-63.573589, 44.641788]),
      turf.point([-63.587665, 44.64533]),
      turf.point([-63.595218, 44.64765])
    ]);
    var options = {units: 'miles', maxEdge: 1};
    
    var hull = turf.concave(points, options);
    
    //addToMap
    var addToMap = [points, hull]

    Returns (Feature<(Polygon | MultiPolygon)> | null) a concave hull (null value is returned if unable to compute 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/concave

    Or install the Turf module that includes it as a function:

    $ npm install @turf/turf

    Install

    npm i @turf/concave

    DownloadsWeekly Downloads

    149,276

    Version

    6.5.0

    License

    MIT

    Unpacked Size

    31.2 kB

    Total Files

    16

    Last publish

    Collaborators

    • twelch
    • jamesmilneruk
    • rowanwins
    • tmcw
    • morganherlocker
    • tcql
    • mdfedderly