OpenStreetMap has been around for awhile and provides free geographic data that can be used by anyone. The data is all community created/contributed and that’s why it’s free to use. Other mapping services such as Bing Maps for Enterprise and Google Maps license their geographic data from some other ...

This NHibernate extension allows you to handle data in a spatial database using .NET objects and HQL queries in a way compliant with Open Geospatial Consortium specifications. Currently we support PostgreSQL (using PostGIS extension), SQL Server 2005 (using MsSqlSpatial extension) and SQL Server 200...

Microsoft Corp. and ESRI today announced that ESRI ArcGIS users will have access to the robust mapping and imagery content provided by the Microsoft Virtual Earth platform inside ArcGIS Desktop and ArcGIS Server. With Virtual Earth seamlessly integrated into ArcGIS 9.3 Desktop, ArcGIS users are now ...

Provides a library for geo-spatial converstaions as well as ontroduces the concepts of sexagesimal conversions and geo-spatial translation.

There are times when I need code to calculate the distance between two geocodes (Lat/Long points). I don't need it very often and until now I didn't have a code snippet that I could jus copy and paste. I was searching and found Rob Conery's LINQ and Geocoding post. It's an interesting post and he in...

Demonstrates how to convert a street address to a geographic position in longitude and latitude coordinates by using a free REST web service provided by GeoCoder.us. Web service only works for addresses within the United States due to the source (US census) data.

Kevin explains why it’s not as simple as you would think to plot Ordnance Survey Grid References on Google Maps. Fortunately he also provides an excellent solution to this problem.