turf-centroid

turf-centroid

turf centroid module

turf.centroid(features)

Takes a Feature or FeatureCollection of any type and calculates the centroid using the arithmetic mean of all vertices. This lessens the effect of small islands and artifacts when calculating the centroid of a set of polygons.

Parameters

parameter	type	description
features	GeoJSON	a Feature or FeatureCollection of any type

Example

var poly = {
  "type": "Feature",
  "properties": {},
  "geometry": {
    "type": "Polygon",
    "coordinates": [[
      [105.818939,21.004714],
      [105.818939,21.061754],
      [105.890007,21.061754],
      [105.890007,21.004714],
      [105.818939,21.004714]
    ]]
  }
};

var centroidPt = turf.centroid(poly);

var result = {
  "type": "FeatureCollection",
  "features": [poly, centroidPt]
};

//=result

Installation

Requires nodejs.

$ npm install turf-centroid

Tests

$ npm test