新的空间数据模型选取方法与实现

New method and implementation for spatial data model selection

空间数据模型是地理信息系统开发应用的核心和基础,选择合适的空间数据模型,直接关系到整个系统的算法实现和开发效率。结合软件工程学的思想,提出一种新的空间数据模型选取方法,并以城镇土地定级估价系统的构建为例,详细介绍该方法的实现过程。实践表明,该方法具有抗风险、敏捷等特点,在实际工程运用中具有较好的可行性和优越性。

Spatial data model is the core and foundation of geography information system （GIS）. It＇s extremely important that select a suitably spatial data model when establish a GIS. It＇s decided arithmetic and efficiency of a GIS. A new spatial data model selected method based on software engineering is put forward. The implemented process of this method is particular introduced using decidegrade and appraisement of town land as an example. The main advantage of this method is anti-risk and agile. We can see its feasibility and superiority in practice system-building.