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移动GIS多尺度表示技术的软件结构设计 被引量:1

Software Design of Multi-scale Representation for Mobile GIS
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摘要 提出了一种基于设计模式的多尺度表示框架,该框架集成了现有的基于空间索引技术的多尺度表示算法,它作为中间层衔接了移动GIS应用和空间数据访问。BRIDGE、STRATEGY和VISITOR三个设计模式的有机结合构成了框架的核心,其中,BRIDGE模式在上层GIS应用与底层GIS SDK之间起到了桥接的作用,STRATEGY模式以统一的接口抽象了不同的多尺度算法,VISITOR模式提供了方便扩展访问底层数据的能力。因此,基于该框架的移动GIS应用能够很容易的扩展到以多尺度表示的方式处理海量的数据集。将该多尺度表示框架集成至移动GIS平台上的土地利用调查软件,实际运行结果表明相对于单一尺度的表示方法,该框架的在处理大容量数据集方面表现出良好的性能。 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 ...
出处 《舰船电子工程》 2008年第10期71-74,193,共5页 Ship Electronic Engineering
基金 国家科技支撑计划项目(编号:2006BAB15B01 2008BAJ08B15)资助
关键词 多尺度表示 移动GIS 设计模式 multi-scale representation mobile GIS design pattern
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参考文献7

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