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

learn more… | top users | synonyms

7
votes
2answers
13k views

Moving marker smoothly along two GPS coordinates

I am trying to animate a marker from one GPS coordinate to another. I am currently using Google Maps to achieve this and, although my algorithm seems right, Google Maps is doing a poor job at ...
5
votes
3answers
2k views

Does a national(USA) interstate rest stop/rest area dataset exist?

And I don't care about format--worry about that later! I found some maps in Google maps, usually per state. I also have one map made my someone else, that no longer appears in the Google Maps search ...
5
votes
4answers
4k views

Google maps kml and polygon eventclick error

I have a google map polygon kml file that I am loading on a google map. When I click on the polygon, I draw a line from that polygon to places on the map. To do this I am using the code: //Add KML ...
10
votes
9answers
7k views

Algorithm for finding irrregular polygon centroid (label point)

I need to find a centroid (or label point) for irregularly shaped polygons in Google Maps. I'm showing InfoWindows for parcels and need a place to anchor the the InfoWindow that is guaranteed to be on ...
4
votes
2answers
5k views

Removing polylines from google maps

I have a point where a Gpolyline line is drawn from a marker to another point. After I click on it a second time, I want to remove the polyline. How do I remove the line after clicking on the marker a ...
5
votes
3answers
2k views

“File not found at…” error when loading KML into Google Maps

I have a KML file on a public URL like http://host.com/dir/file.kml If I put that KML file on another server, and put the new URL in the search box on Google Maps, it loads the KML into google maps. ...
5
votes
1answer
1k views

Coordinates of upper left corner in the world file?

According to Wikipedia and ESRI last two lines in the world file represent x and y coordinates of center of upper left pixel. Now, if I have a world file like this: 32.0 0.0 0.0 -32.0 691200.0 ...
4
votes
3answers
6k views

How to get an address or location from Google Maps?

How can one get the street address and/or coordinates of any location on Google Maps with a minimum of fuss? Google Calendar will spawn a window with a map to the location one specifies in the ...
1
vote
1answer
227 views

API to build GoogleStreet-like photo maps

do you know if Google offers a public API to display pictures in a map as they do with Panoranio? just to be clear, I don't want to use Google Street, or publish my pictures anywhere in the Internet, ...
7
votes
3answers
10k views

How can I plot GPS coordinates on Google Map

What is the best way to plot GPS coordinates on a Google Map? Are there any tools that can do that (written in python specifically)?
9
votes
4answers
2k views

What is a “mashup”?

GIS users mix spatial data layers from an early age of GI science. What is new in the concept of "mashup"? Is it something really new, or only a trendy word?
5
votes
4answers
804 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
14k 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
12k 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 ...
22
votes
5answers
69k 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?
8
votes
5answers
962 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
286 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
5k 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 ...
5
votes
4answers
5k 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 ...