Time content in geographic information

Illustration

How Time is expressed through Geographic information?

• By a sequence of phenomena and spatial features status:
  • Phenomena status: thematic properties
  • Spatial features status: geometric and pattern properties
• By a degree of richness of the time dimension (from low to high):
  • 2 limits for the time period
  • several regular or irregular intervals (discrete description): time series
  • a function of time (continuous description, rare!)

Time change analysis

There are different levels, views and contexts of time change analysis.

• 3 levels of analysis
• 2 views of change analysis
• 3 levels of information content
• single or multiple features analysis
• single or multiple phenomena analysis (uni, multi-variate analysis)