Spatiotemporal Data Types
Data types for moving objects; Spatiotemporal data types
Abstract data types to represent time-dependent geometries, in particular continuously changing geometries, or moving objects. The most important types are moving point and moving region.
Amoving point represents an entity for which only the time-dependent position is of interest. A moving regiondescribes an entity for which the time-dependent location as well as the shape and extent are relevant. For example, moving points could represent people; vehicles such as cars, trucks, ships, or airplanes; or animals; moving regions could be hurricanes, forest fires, spread of epidemic diseases, etc. Moving point data may be captured by GPS devices or RFID tags; moving region data may result from processing sequences of satellite images, for example. Geometrically, moving points or moving regions exist in a 3D (2D + time) space if the movement is modeled within the 2D plane; for moving points this can be...
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