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there are two main packages :

  • time.object : represents the package Temporal Objects, it defines temporal geometric and topological objects that shall be used as values for the temporal characteristics of features and data sets.
    The temporal position of an object shall be specified in relation to a temporal reference system.
  • time.reference : this package provides elements for describing temporal reference systems.

Future Development

  • The Temporal topological objects and Temporal aspects of geographic information are not implemented yet.
  • Some methods for manipulating time objects need to be implemented.