A Multi-scale Representation Framework for Efficient Mobile GIS Integration

In this paper, we propose a design pattern based multi-scale representation framework that encapsulate these spatial index based multi-scale algorithms and treat this framework as a middle layer between the underlying GIS SDK and up-level applications. This framework is mainly composed of three well-known design patterns BRIDGE, STRATEGY and VISITOR, which act as a bridge forwarding up-level requests to the underlying GIS SDK, a unified interface of different multi-scale algorithms and an easy extended visiting scheme respectively. Within this framework mobile GIS can be easily extended to handle huge volume dataset in multi-scale fashion. We integrate this framework into our land-use mobile GIS applications and practical experiments show that the multi-scale exhibits more effectively than that of single-scale when dealing with huge volume dataset.