Finds the central point of a GeoJSON feature, like a city or a park. Ideal for placing labels or markers.
npm install @turf/centerTakes a [Feature][1] or [FeatureCollection][2] and returns the absolute center point of all features.
* geojson [GeoJSON][3] GeoJSON to be centered
* options [Object][4] Optional parameters (optional, default {})
* options.properties [Object][4] Translate GeoJSON Properties to Point (optional, default {})
* options.bbox [Object][4] Translate GeoJSON BBox to Point (optional, default {})
* options.id [Object][4] Translate GeoJSON Id to Point (optional, default {})
``javascript
var features = turf.points([
[-97.522259, 35.4691],
[-97.502754, 35.463455],
[-97.508269, 35.463245]
]);
var center = turf.center(features);
//addToMap
var addToMap = [features, center]
center.properties['marker-size'] = 'large';
center.properties['marker-color'] = '#000';
`
Returns [Feature][1]<[Point][5]> a Point feature at the absolute center point of all input features
[1]: https://tools.ietf.org/html/rfc7946#section-3.2
[2]: https://tools.ietf.org/html/rfc7946#section-3.3
[3]: https://tools.ietf.org/html/rfc7946#section-3
[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
[5]: https://tools.ietf.org/html/rfc7946#section-3.1.2
---
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.
Install this single module individually:
`sh`
$ npm install @turf/center
Or install the all-encompassing @turf/turf module that includes all modules as functions:
`sh``
$ npm install @turf/turf