Handling Time

October 7, 2011 § Leave a comment

There are various ways of handling and representing time. Time is often described as the 4th dimension of GIS (especially in Time-Enabled GIS (TGIS)).

• One such model for representing time is the time slice model.

• Ideally, data such as time should be interactive and not be restricted to animations (which restrict longevity).

• Timelines are also very common representations of time.

( The Course of Empires Emma Willard 1836 )

• ‘Points’ are often used to represent ‘Events’ even though they actually have ranges. Everything can be potentially represented as an event.

( The JFK Assassination Timeline – by Simile Widgets – Timeline )

• Animated raster images are often used to represent long-term changes (like rising sea levels).
Sahul Time

• There are many other TGIS and related representations out there;
Animated Atlas of African History
Welikia Project
Animated TimeMap of the Khmer Empire

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