摘要
探讨了模型与地理信息系统的集成问题 ,指出问题的实质是对象状态数据模型、对象模拟模型和对象分析处理模型的综合表达与处理 .提出了建立在元数据和元模型基础上的二层次集成方案 .首先把对象状态数据模型、对象模拟模型和对象分析处理模型以规范化的元数据和元模型形式表达出来 ,在此基础上实现的地理信息系统、模型库管理系统和空间分析处理系统也就能提供基本的数据集成和功能集成 .其次 ,提出了基于数据流机制的应用集成方案 ,满足能把应用方案数据流图化的综合性集成应用的需要 .
This paper discussed the integration of model and GIS. It is shown that the integrated express and the process of the object state model, the object simulative model and the object analytic model are the key issues for integration. An integration scheme based on metadata and metamodel is suggested. First, a basic scheme about metadata and metamodel was proposed to act as the basis for data integration and functional integration. Then, an integration scheme based on data flow mechanism was proposed to meet the needs of some applications that can be expressed as data flow chart. A flow chart is a data flow networks which are comprised of nodes and pipelines. According to the needs of geo-information process, 5 classes of nodes, 5 classes of pipelines, and a data flow network builder were developed. Based on the integrated systems, a data flow chart of flood routing model was built to demonstrate the integration between model and GIS.
出处
《应用基础与工程科学学报》
EI
CSCD
2002年第2期134-142,共9页
Journal of Basic Science and Engineering
基金
国家自然科学基金重大项目资助 (编号 5 9890 2 0 0 )
