Overview: WMS, WFS, WCS

WMS (Web Map Service), WFS (Web Feature Service), and WCS (Web Coverage Service) are three web service standards from the Open Geospatial Consortium (OGC). These allow web clients to query and receive geographic information in the form of image, vector, or coverage data. The open source GeoServer application is the reference implementation of a server ...

Technical Overview: UMN MapServer

Technical Overview: UMN MapServer
MapServer is an open source package to create internet-based mapping applications. It is popular with developers who wish to create their own geospatial servers instead of depending on third party servers such as Google Maps or Microsoft Virtual Earth. Originally developed by the University of Minnesota with the assistance of NASA, MapServer is currently managed ...

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 ...

Book Review: GML Geography Mark-Up Language

GML Geography Mark-Up Language: Foundation for the Geo-Web, by Ron Lake, David S. Burggraf, Milan Trninic, Laurie Rae; publ. by Wiley With a chief writer who was responsible for much of the GML standard, this book is an indispensible reference for those who wish to create their own GML application schema, or wish to have ...

Book Review: KML Handbook

The KML Handbook: Geographic Visualization for the Web, by Josie Wernecke, Addison Wesley 2008 Josie Wernecke provides an excellent description of all of the features of KML (Keyhole Markup Language). This book serves as both an introductory guide and a reference for KML practitioners.

Technical Overview: GML

GML (Geography Markup Language) is based on XML and was developed by the Open Geospatial Consortium (OGC) to express geographic features.

Technical Overview: KML

Technical Overview: KML
KML (Keyhole Markup Language) was developed by Keyhole, Inc for adding geographic annotation, models, and simple animation to their Keyhole Earth Viewer. Keyhole was taken over by Google in 2004, and the Earth Viewer is now known as Google Earth. Google have also adopted it for use on their Google Maps platform, and it is ...

Technology Overview: SVG

SVG or Scalable Vector Graphics is an XML-based vector graphics format for the web. This format showed great promise for many online applications including GIS, but browser adoption rates have been very slow.

Technology Overview: Google Earth

Technology Overview: Google Earth
Google Earth is a desktop application which operates as a client, receiving aerial photography from Google via the Internet. It is often confused with Google Maps which is a web-based client application with a published Javascript API. Google Earth is the originator of the popular Keyhole Markup Language (KML).