Dynamic spatial updating: A scale-independent approach to thematic mapping and automated map revision
In order to overcome the inadequate treatment of scale and theme variability in contemporary spatial updating studies, research conducted at Curtin University of Technology has developed a Dynamic Spatial Updating (DSU) process for thematic map revision at a range of scales. The DSU process enables thematic maps, derived from a primary geographic database, to be automatically updated as a consequence of updates performed in the primary data source.
The DSU process is implemented in a database-sharing and spatial views environment. Spatial views (map views) are virtual windows to an underlying geographic database, where updates to the primary data source are reflected dynamically in all derived spatial views.
This achievement is based on an innovative approach to map production and revision that integrates a scale-independent data model, interactive cartographic display transformations and cartographic validation mechanisms to achieve an integrated approach to spatial data maintenance and product management.
The approach supports a customer supplier model. It not only considers the requirements of data custodians, but also takes into account the needs of data users, who require flexibility to produce customised geographic data products and more significantly, real-time updates for sustainable product management.