Technical Overview: OpenLayers

OpenLayers is a popular open source JavaScript library for displaying dynamic map data in a web page. The OpenLayers library can work as the client half of an AJAX map application, including modern features such as “slippy” maps. Most if not all of the map data is provided by servers running other software. OpenLayers supports ...

Technical Overview: GeoJSON

Although the acronym “AJAX” originally referred to Javascript and XML, the term has been generalized to cover any client language or data transfer format. A popular alternative to XML is JavaScript Object Notation (JSON). This is a much lighter format than XML, and is actually a subset of JavaScript. GeoJSON is a geospatial data interchange ...

Technical Overview: Google Maps

Technical Overview: Google Maps
Google Maps is the most well known of the various mapping web services. With a rich JavaScript API, road maps, route planning, satellite images, and data plotting; Google Maps offers similar services and maps as Microsoft’s competing Virtual Earth service. Google Maps should not be confused with Google’s other mapping product, Google Earth. Google Earth ...