[](https://travis-ci.org/mapbox/geojson-area)
# geojson-area
Calculate the area inside of any [GeoJSON](http://geojson.org/) geometry.
## usage
npm install @mapbox/geojson-area
## example
```js
var geojsonArea = require('@mapbox/geojson-area');
var area = geojsonArea.geometry(obj);
```
## api
### `geojsonArea.geometry(obj)`
Given a Geometry object, return contained
area as square meters. Invalid input will return `null`.
Adapted from [OpenLayers](http://openlayers.org/)