Google Maps is a web mapping service application and technology provided by Google free (for non-commercial use),

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5
votes
4answers
1k views

Is there a way in the Google Maps API to perform a union?

I'm looking for a way to take the overlap area of multiple polygons and work with that result as a single entity, ideally all in the API.
10
votes
9answers
16k views

Consuming Google Maps as background map through ArcGIS Server?

I am doing a (non commercial) project where the client doesn't have the budget for purchasing map data like that provided by TeleAtlas. They only need map data for a background map, and they'd like ...
36
votes
3answers
13k views

What is the current Web Mercator projection code?

The web mercator projection, popularised by Google Maps, seems to be given a new EPSG code every couple of years. EPSG:900913 (Google in calculator text) was an unofficial code EPSG:3785 - is the ...
25
votes
6answers
91k views

Display a local file in Google Maps

How can I get a KML/KMZ file to display on Google Maps without a public facing web server?
9
votes
5answers
1k views

Buffers of public transportation transit times

I'd like to be able to create buffers/zones/rings of transit times using Denver's public transportation system. For an example of what I'm talking about, check out triptropnyc.com - I don't need it ...
4
votes
1answer
330 views

Can someone explain in simple terms the licence on Google “satellite” images?

What can I and can I not do with the Google satellite images?
3
votes
4answers
6k views

Calculate length and area with Google Maps API v3

Google Maps API v2 had great methods for lines and polygons to calculate length and area. v3 is lacking these methods (maybe just for now?). What other options do I have for calculating line length ...
6
votes
5answers
7k views

Can you make a travel region polygon with with Google Maps API?

I am working on a local design project and need to determine if someone is local to my area to allow them to participate. Local, as defined by the group, means that the person is within 2 hr driving ...