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Analysing Product-Specific Behaviour to Support Process Dependent Updates in a Dynamic Spatial Updating Model

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A scale-independent database that allows derived maps to be dynamically updated from a centrally maintained data source is an appealing alternative to traditional map revision techniques, which by today's standards are costly and inefficient. This paper presents a dynamic spatial updating model that supports automated updating of non-standard maps in a scale-independent database-centric map production environment. Maps derived from the database are not separate data sets, but rather active views of the database. Each derived map is displayed in a unique way by implementing cartographic operations at the map level. While the operations applied require user involvement for strategic cartographic decisions, and algorithmic initiation and control, the technique allows geographic data to be processed cartographically without affecting the geometric integrity of the database. Each time a derived map is opened it retrieves the spatial data (and updates) from the database and applies the unique cartographic representation methods that persist on the individual derived maps. Database updates are automatically triggered to cartographic products, as process dependent updates, according to their individual product-specific behaviour. This paper investigates product-specific behaviour (product multiplicities) and the cartographic processing requirements to support dynamic spatial updating techniques in an object-oriented map publishing environment. These techniques are implemented in an off-the-shelf software environment using ArcGIS.

Document Type: Research Article


Affiliations: Department of Spatial Sciences Curtin University of Technology

Publication date: June 1, 2005


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