Say I have a web service API that accepts a zipcode as a parameter, but I only have access to a GPS coordinate (latitude, longitude). How can I dynamically lookup the zipcode that the coordinate belongs to?
I’m doing this work on the iPhone, so hopefully there’s a simple way to do this within the CoreLocation APIs that I’m overlooking in the documentation.
I’d try checking out the docs for the reverse geocoder in the 3.0 SDK if I were you. I can’t say what’s there, but you might, say, find that the reverse geocode returns a placeMark, and then if you look up that placeMark in the SDK, you might find that it has a postcode property. Who knows?