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?
I kept a listing of virtual globes in 2005 and 2006, but it's now woefully out of date http://geography2.blogspot.com/2005/11/listing-of-virtual-globes.html. Today, the main four seem to be: Google ...
I am embarking on a project in which users will author, save, and share their own maps over the web. We will provide them with a large number of feature classes, but users will effectively author ...