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How to maintain topological relationship's real-time updates and maintain dynamic topological relationship, is an important issue must be taken into account in the network analysis model. The topological relationship is very important for the spatial objects in the algorithm of network analysis, especially when add, delete and modify the spatial object geometry and attribute information dynamically...
Progressive vector data transmission is an import spatial data service for settling the contradiction between the amount of spatial data and network link. Existing work is focus on simplification with map generalization which has some problems. This paper put forward a new way for progressive vector data transmission based on overall effect, not on single geometry object. For this purpose, data model...
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