摘要
本文通过面向对象建模技术的引入和 web的引入实现了模型库的共享。同时 ,本文构建了基于 web的面向对象模型库系统 ,并给出了该系统总体结构、详细结构及各个模块的功能分析和设计细节。在此基础上 ,本文进一步讨论了 GIS与模型库系统的集成问题。最后 ,本文以广东省水土保持管理信息系统中的模型库为例 ,作进一步说明。
The paper achieved the share of model through the technology of web and object modeling. It constructed the model base system based on web and object modeling technique, and described the whole architecture of the system and the design and function of each module. It considered model base system should consist of model dictionary, model registration system and model management system and model base. Model dictionary included model metadata and model information; model registration system decided who could use the model; model management system consisted of model using module, model generation module, model management module, model information publish module and model maintenance module. Especially, the process of composing complex model could divide an array of simple models though arithmetic:<complex model>∷={<arithmetic><simple models>};<simple model>∷={<parameter>}<model program>. On the basis of the above mentioned, the paper discussed the problem of integration of GIS and model base system. Finally, the paper demonstrated the example of model base in Information Management System of Water and Soil Conservation in Guangdong province. In the example, the tools used to build model base system included ARC GIS 8.1, ARC IMS, VB 6.0, ASP and DreamWeaver ultradev 4.0. Model base system in the example based on natural eroding model base and man-made eroding model base could do buffer analysis, overlap analysis, contrast analysis, the analysis of eroding development direction, the analysis of danger area and harmful analysis. The system took web as the object to receive information and publish the result, made the share of information possible. It took server as the place which did model analysis and model computing. Otherwise, the paper introduced the controller of Microsoft Script Control 1.0, achieved the generation of part of models.
出处
《地球信息科学》
CSCD
2003年第1期73-77,共5页
Geo-information Science
