geocoding

I am calculating center Lat/Lng fron list of available Lat/Lng using C# and rendering on OpenLayer Map. I observed the calculation of getting center lat/lng will give me slightly difference in lat/lng . I am referring this link for the calculation Calculate the center point of multiple latitude/longitude coordinate pairs . C# Code: static void Main(string[] args) { List<GeoCoordinate> listCoordinate = new List<GeoCoordinate>(); listCoordinate.Add(new GeoCoordinate() { Latitude = 22.9833, Longitude = 72.5000 }); //Sarkhej listCoordinate.Add(new GeoCoordinate() { Latitude = 18.9750, Longitude =

For some addresses that I attempt to geocode, google returns inappropriately inconclusive results. The following is an example, but it is not an isolated incident. The first returned result is the exact match, however google flags it as a "partial_match": Street address: 16160 Frederick Rd City: Gaithersburg State: MD Zip code: 20877 Link: http://maps.googleapis.com/maps/api/geocode/json?sensor=false&address=16160%20Frederick%20Rd,+Gaithersburg,+MD,+20877 My issue here is in determining which is the correct match. In this case, the "partial match" flag is not useful because it is set to "true"

I have a long list of towns and cities, and I'd like to add latitude and longitude information to each of them. Does anyone know the easiest way to generate this information once? See also Geocode multiple addresses The first part of the third video shows how to get latitude and Longitude using Google Refine and geocoding. No need to write a new script. Ideal for doing this kind of change once . http://code.google.com/p/google-refine/ Or use www.geonames.org - there's language APIs for that. Or Open Street Map's Nominatim: http://wiki.openstreetmap.org/wiki/Nominatim - google have slightly

I have an address database and I tried to find latitude and longitude using google geocoding and yahoo API . Is there any other popular API's or programs are there. I'm using ubuntu platform. I'm aware of at least one other geocoding system, OpenStreetMap . The only major differences I've found with any of these API's is the level of detail in each. OpenStreetMap has significantly less data, but is much easier to integrate with custom data. Also, I think the maps produced by google are the most beatiful of the three. I was usually using Google Maps geocoding service over HTTP which returns you

I have been trying to get started but run into the same rock time after time trying to create and query MongoDB with C# official driver. The problem is how to create data with geo information. I am just not finding the answer. Code: MongoUrl url = new MongoUrl("mongodb://xxx.xx.x.xx/mydb"); MongoServer server = MongoServer.Create(url); MongoDatabase database = server.GetDatabase("mydb"); <-- this works fine BsonDocument[] batch = { new BsonDocument { { "name", "Bran" }, { "loc", "10, 10" } }, new BsonDocument { { "name", "Ayla" }, { "loc", "0, 0" } } }; places.InsertBatch(batch); <-- that part

I have many examples where google maps returns the exact location whereas geocoding cannot find an exact match and provides only a close match lat/lon which is no good for my purpose. example: "1729 state road 8, auburn, IN 46706" in google maps drops me exactly on a walmart distribution center as it should. using geocoding.....either thru http://gmaps-samples.googlecode.com/svn/trunk/geocoder/singlegeocode.html or manually via https://maps.googleapis.com/maps/api/geocode/json?address=1729+state+road+8,+auburn,+IN,+46706&key=[your_key_here] has the location several miles away... I don't