The Yahoo! Internet Location Platform

I guess interesting stuff does come out of Where 2.0. Simply put, the Yahoo! Internet Location Platform creates an ID called WOEID (Where On Earth ID) for every location on earth and has an API to geocode back and forth from that WOEID.

In simple terms, the Service allows you to look up the unique identifier – called the Where on Earth ID, or WOEID – for almost any named place on the Earth; it also allows you to resolve a WOEID you have received from a third party – such as Fire Eagleâ„¢ or Upcoming – to the place it represents.

The API is accessed via HTTP GET; the following examples can be cut-and-paste into a web browser to view the results (note that these links do not work properly with IE6):

Find the WOEID of a significant landmark:
http://where.yahooapis.com/v1/places.q(‘sydney%20opera%20house’)

Resolve a WOEID to a place:
http://where.yahooapis.com/v1/place/2507854

Find the WOEID of a specific place:
http://where.yahooapis.com/v1/places.q(‘northfield%20mn%20usa’)

Obtain a range of WOEIDs that match a given place, ordered by the most likely:
http://where.yahooapis.com/v1/places.q(‘springfield’);start=0;count=5

Find the parent of a given WOEID (and return a detailed record):
http://where.yahooapis.com/v1/place/638242/parent?select=long

Return the Placename for a given WOEID in a specific language (where it exists):
http://where.yahooapis.com/v1/places.q(‘usa’)?lang=fr

To obtain the representation of a place in JSON format:
http://where.yahooapis.com/v1/place/2487956?format=json

To obtain a list of geographies that neighbor a specific WOEID:
http://where.yahooapis.com/v1/place/12795711/neighbors

The Yahoo! Local & Maps Blog explains it as “a more elegant way to abstract the relationships of location, and unambiguously describe places in a permanent, language-neutral manner.”
One of the overused examples of a place in Arizona is the Grand Canyon so lets put that in the system and see what we get:

http://where.yahooapis.com/v1/places.q(‘grand%20canyon’)

I like the hierarchy here: In the above example, Grand Canyons Village’s parent is the county of Coconino, whose parent is Arizona, whose parent is the United States. These relationships should help users get more information out of places than they did before.

Dan Catt has some details on his blog about WOEID and how Yahoo! is using it.

The “new” Yahoo! Maps

The word via PlanetGS is that Yahoo! has a new update to their mapping tool. Dan Catt has probably the best overview I’ve seen so far. I used to use Yahoo! Maps religiously, but since Google Maps has come out, I just don’t really bother anymore (other than to georeference photos in Flickr). I switch between GMap and Virtual Earth depending on where I’m at (and I just love the Bird’s Eye view). I will say though these Yahoo! maps look great.

Yahoo! Maps now has satellite imagery

About time! I actually use Yahoo! maps more than probably all the rest because I like the interface. Now I can at least take a look at imagery from areas I’m traveling to. The imagery isn’t as detailed as Google’s or ESRI’s in urban areas, but it does seem better in rural Texas where my in-laws live. As with Microsoft, Yahoo! focuses on the continental USA so if you live somewhere else, you usually don’t get as good imagery. That said you can finally use Yahoo! Maps outside the USA for basic mapping (the imagery isn’t good by any means) and it does sound like they are working to improve it.

Update: Philip says in the comments that, “Yahoo has added international support for their maps and geocoder.” meaning that you can now use the geocoder in many countries now. Head over to his blog post to read more.