JSPM

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  • License MIT

Finds the central point of a GeoJSON feature, like a city or a park. Ideal for placing labels or markers.

Package Exports

  • @turf/center
  • @turf/center/package.json

Readme

@turf/center

center

Takes a Feature or FeatureCollection and returns the absolute center point of all features.

Parameters

  • geojson GeoJSON GeoJSON to be centered

  • options Object Optional parameters (optional, default {})

    • options.properties Object Translate GeoJSON Properties to Point (optional, default {})
    • options.bbox Object Translate GeoJSON BBox to Point (optional, default {})
    • options.id Object Translate GeoJSON Id to Point (optional, default {})

Examples

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<Point> a Point feature at the absolute center point of all input features


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 single module individually:

$ npm install @turf/center

Or install the all-encompassing @turf/turf module that includes all modules as functions:

$ npm install @turf/turf