Geojson

Create geojson circles in javascript.

var center = [-75.343, 39.984];
var radius = 3;
var units = 'kilometers';
var properties = { foo: 'bar' };

var myCircle = new Circle(center, radius, {
    units: units,
    zoom: 12,
    properties: properties
});

var geojson = myCircle.asGeojson();

// Update circle center
myCircle.updateCenter([0,0]);`

// Update circle zoom
myCircle.updateZoom(10);

// Update circle radius
myCircle.updateRadius(100);

Building

npm install

If using in your app, include the following library in your code: dist/geojson-circle.js

If building a new version from source: num run build

Example

Use Mapbox GL JS to load the example implementation at /examples at www.mapbox.com/labs/draw-circle: