Definition
An object changes if and only if there exists a property for this object and distinct time stamps t and t′ such that the object has property P at time stampt and the object does not have propertyP at time stamp t′. An important classification of changes is based on the difference between discontinuous and continuous changes. Discontinuous changes have values of properties that change instantaneously from one value to another (such as the change of the owner of a parcel). On the other hand, the values of attributes of continuously changing data potentially change at each instant of time and can be typically represented by a line without discontinuities.
A typical example of a continuous change is movement. If the same object is positioned at different locations at different times, the object moves. A movement defines a trajectory, which is a connected non-branching continuous line with a certain shape and direction, and can be easily represented by the path of a thrown ball...
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Van de Weghe, N. (2017). Spatiotemporal Relations for Moving Objects. In: Shekhar, S., Xiong, H., Zhou, X. (eds) Encyclopedia of GIS. Springer, Cham. https://doi.org/10.1007/978-3-319-17885-1_1542
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