Communities of interest very often overlap and as a result there are often many database representations of a given real world object, typically reflecting different points of view about that object.  A lighthouse is for navigation from the point . . . → Read More: Geographic Entity Registries

One of the most pressing issues facing our planet is of course climate change and its close sister ecological decline.  In order to act on these issues we need to come (more or less globally) to an agreement on . . . → Read More: GeoWeb and the State of the World

Virtually all of us use search engines several times a day. While not quite extensions of our brains, clearly lots of information is now accessed by “googling” rather than remembering. I think most of us would think of these . . . → Read More: Virtual Globes as Essential Services?

As many people have pointed out, especially here in Canada, there is a great deal of geographic or geographically related information which does not reside in spatial or GIS databases.  Nonetheless there is the need to link this . . . → Read More: Cascading and Federated WFS and the Concept of Geolinking

Overview

The most often quoted definition of a Spatial Data Infrastructure (see http://en.wikipedia.org/wiki/Spatial_Data_Infrastructure) is that it is “a framework of spatial data, metadata, users and tools that are interactively connected in order to use spatial data in an . . . → Read More: What is an SDI?

In a recent national experiment here in Canada, using Web Feature Servers (WFS) to aggregate and update road and other data, it came as a surprise to some of the participants that schema mapping was REQUIRED.  This same issue . . . → Read More: WFS – Schema Mapping is Key