# @turf/centroid ## centroid Takes one or more features and calculates the centroid using the mean of all vertices. This lessens the effect of small islands and artifacts when calculating the centroid of a set of polygons. **Parameters** - `geojson` **[GeoJSON][1]** GeoJSON to be centered - `options` **[Object][2]** Optional Parameters (optional, default `{}`) - `options.properties` **[Object][2]** an Object that is used as the [Feature][3]'s properties (optional, default `{}`) **Examples** ```javascript var polygon = turf.polygon([[[-81, 41], [-88, 36], [-84, 31], [-80, 33], [-77, 39], [-81, 41]]]); var centroid = turf.centroid(polygon); //addToMap var addToMap = [polygon, centroid] ``` Returns **[Feature][4]<[Point][5]>** the centroid of the input features [1]: https://tools.ietf.org/html/rfc7946#section-3 [2]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object [3]: https://tools.ietf.org/html/rfc7946#section-3.2 [4]: https://tools.ietf.org/html/rfc7946#section-3.2 [5]: https://tools.ietf.org/html/rfc7946#section-3.1.2 --- This module is part of the [Turfjs project](http://turfjs.org/), an open source module collection dedicated to geographic algorithms. It is maintained in the [Turfjs/turf](https://github.com/Turfjs/turf) repository, where you can create PRs and issues. ### Installation Install this module individually: ```sh $ npm install @turf/centroid ``` Or install the Turf module that includes it as a function: ```sh $ npm install @turf/turf ```