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Geojson.io API

You can interact with geojson.io programmatically in two ways:

URL API

You can do a few interesting things with just URLs and geojson.io. Here are the current URL formats.

map

Open the map at a specific location. The argument is numbers separated by / in the form zoom/latitude/longitude.

Example:

http://geojson.io/#map=2/20.0/0.0

data=data:application/json,

Open the map and load a chunk of GeoJSON data from a URL segment directly onto the map. The GeoJSON data should be encoded as per encodeURIComponent(JSON.stringify(geojson_data)).

Example:

http://geojson.io/#data=data:application/json,%7B%22type%22%3A%22LineString%22%2C%22coordinates%22%3A%5B%5B0%2C0%5D%2C%5B10%2C10%5D%5D%7D

data=data:text/x-url,

Load GeoJSON data from a URL on the internet onto the map. The URL must refer directly to a resource that is:

  • Freely accessible (not behind a password)
  • Supports CORS
  • Is valid GeoJSON

The URL should be encoded as per encodeURIComponent(url).

Example:

http://geojson.io/#data=data:text/x-url,http%3A%2F%2Fapi.tiles.mapbox.com%2Fv3%2Ftmcw.map-gdv4cswo%2Fmarkers.geojson

id=gist:

Load GeoJSON data from a GitHub Gist, given an argument in the form of login/gistid. The Gist can be public or private, and must contain a file with a .geojson extension that is valid GeoJSON.

Example:

http://geojson.io/#id=gist:tmcw/e9a29ad54dbaa83dee08&map=8/39.198/-76.981

id=github:

Load a file from a GitHub repository. You must have access to the file, and it must be valid GeoJSON.

The url is in the form:

login/repository/blob/branch/filepath

Example:

http://geojson.io/#id=github:benbalter/dc-wifi-social/blob/master/bars.geojson&map=14/38.9140/-77.0302

Console API

Pop open your browser console and see the beautiful examples: geojson.io has started to expose a subset of its inner workings for you to mess around with:

window.api.map

The Leaflet map that you see and use on the site. See the Leaflet API for all the things you can do with it.

For instance, you could add another map layer:

window.api.map.addLayer(L.tileLayer('http://tile.stamen.com/watercolor/{z}/{x}/{y}.jpg'))

window.api.data

The data model. See the code to get an idea of how it works - you'll want to use stuff like data.set({ map: { .. your geojson map information .. }) and data.get('map') and data.mergeFeatures([arrayoffeatures]) to do your dirty business.