Abstract
During the past decade there has been increasing research into the temporal component of geographic information systems (GIS). Most of the research has focused on the treatment of discrete changes in spatial objects, for example in cadastral parcels. However less attention has been paid to the treatment of continuous change which occurs primarily in dynamic objects found in the natural environment, for example in seasonal coastal changes. In order to represent these objects appropriately in a GIS, which by their inherent structure tend to treat the real-world in a discrete manner, temporal interpolation techniques are required. The aim of this paper is to discuss the techniques available for handling the temporal interpolation of spatially dynamic objects, with particular emphasis on changes to their geometric properties. The paper also proposes a range of interpolation methods for three key variants of geometric change.
spatial data dynamic objects geometric change temporal interpolation
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