geographic terms

An illustrative example of distance decay using blue points and yellow arrows.

Distance Decay and Its Use in GIS

Caitlin Dempsey

Distance decay is a phenomenon observed between locations or ethnic groups- the further apart they are, the less likely it is that they will interact very much. Distance decay theory in GIS can be used for other purposes such as the effects of time and distance on public transportation ridership, crime analysis, and health care.

Geofencing

Caitlin Dempsey

With all the location-based social media applications out there, it’s only logical that, in addition to being able to restrict ...