Support for Google Maps encoding format in as ST_As* function

[pramsey]

Google maps has a special serialization form for linestrings/polygons, which would be handy to emit.

[pramsey]

As I recall from the last time I investigated this, the "tricky" part is that the Google encoding embeds information about scale into the object as well. So a special douglas/poiker method that marks but does not remove vertices might be required.

P.

[dfuhry]

Paul,

I was wondering about this encoding a few months ago. I've never seen any references on it, can you point to any?

-Dave

[pramsey]

Here's some references.

 http://code.google.com/apis/maps/documentation/polylinealgorithm.html

 http://code.google.com/apis/maps/documentation/polylineutility.html

 http://facstaff.unca.edu/mcmcclur/GoogleMaps/EncodePolyline/