ESTDMEvent-Based Spatiotemporal Data Model
References in periodicals archive ?
Their ESTDM model records event sequences with a base grid (representing a single geographic theme, such as temperature) and a sequence of changes to its grid cells (as changes to the theme at different locations).
ESTDM demonstrates the use of time to organize changes at locations for a given geographic theme, whose attribute varies in space and time.
Discrete events are more precisely represented by an event-based model, such as the ESTDM model (Peuquet and Duan 1995) or the TRIAD model used in the TEMPEST temporal GIS (Peuquet and Qian 1996).