Reverse geo lookup for Norway

From GPS coordinates to place name

Here's a small web service that receives lat, lon coordinates (typically from a GPS) and gives you a hint as to where in Norway that spot is.

Formats

Accepts the following queries:

By simple lat, lon arguments: /geolocate.php?lat=57.9892&lon=7.06157 try it
By a gps json object:/geolocate.php?gps={"coords":{"latitude":57.9892,"longitude":7.06157}} try it
By postal code: /geolocate.php?postalcode=9012 try it
Try this with your current position (your browser must be able to return your position)

Returns JSON, utf8 encoded:


{ "county": 19, // required field
  "countyname": "Troms",  // required field
  "postalcode": null, // optional field
  "name": null, // PLACE NAME optional field
  "municipality": null, // optional field
  "municipalitycode": null // optional field
}

How it works

A table of (lat,lon)→ place,municipality mappings is populated with data from yr.no. A script finds the closest point and returns the name of the place and some other data.

What about JSONP?

Yeah, knock yourself out. Add &callback=functionName to the query.

Limitations

Golly, I'm not sure. Please suggest to havard@gulldahl.no.

Who made it

The service is (C) Håvard Gulldahl, it's released under the AGPL license and you can run it, too! It's on gitorious, go get it there.