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Extension to OGC moving features standard enables JSON encoding

Press Release 2 Jun - 13:56 SAST

Extension to OGC moving features standard enables JSON encoding

Press Release 2 Jun - 13:56 SAST

Information from OGC

The Open Geospatial Consortium (OGC) has approved the Moving Features Encoding Extension – JSON for adoption as an official OGC Standard. The extension provides JSON encoding as an alternative to XML or CSV encodings.

This standard defines how to encode and share the movements of geographic features by using JavaScript Object Notation (JSON). Such a moving feature is one whose location changes over time, for example, a car, a pedestrian, an airplane or a ship.

A moving feature contains a temporal geometry, whose location continuously changes over time, as well as dynamic non-spatial attributes whose values vary with time. The new extension supports 0- (point trajectories), 1- (lines), 2- (polygons), and 3-dimensional (polyhedrons) objects with locations and/or properties that vary over time.

The ability to attribute time-varying properties to an object (rather than just varying its location or trajectory) has many applications, including in location-based services, intelligent transportation systems, disaster risk management systems, and smart city uses. For example, COVID-19 tracking and hotspot modelling, traffic congestion on roads, and hotspots of air pollution are all typical moving features seen in the real world.

The encoding standard makes it possible to represent discrete phenomena (e.g. road accidents), step phenomena (e.g. administrative boundaries) and continuous phenomena (e.g. vehicles or floods).

The open OGC Moving Features Encoding Extension – JSON is free to download and implement and can be accessed here.