Geo Visualization

Geographical data is any data that contains geographical information.
There are 2 categories of geographical information:
  1. 1.
    Spatial Objects
    • shape and spatial extent matters
    • the map is the main object of interest
    • for example: counties, regions, buildings, lakes etc.
  2. 2.
    Non-Spatial Geolocated Objects
    • shape and spatial extent do not matter
    • the map is only used as reference
    • for example: cars, people, animals, weather stations etc.

Types of Spatial Objects

  • Regions For example: country borders
  • Locations For example: latitude, longitude
  • Identifiers Names/labels given to spatial objects, for example: zip code, street name, borough
Geocoding is the process of translating an identifier to a specific location (for example state name to location), while Reverse Geocoding is the process of translating a location to an identifier (for example location to state name).