地学专题图形的对象模型研究

介绍了地学专题图形的面向对象的分析方法，构造了适合计算机分析处理的地学图形数据的对象模型，该模型以地学图形数据库与属形数据文件关联共存在的方式，解决了地图要素的计算机压缩贮与分析处理问题，对地图要素的空间数据，系统采用了拓扑数学模型进行了处理；对于属性数据，则采用关系数学模型和处理。通过两种数据结构之间的联系，实现了地学图形数据和属性数据之间的互访和操作。用面向对象的软件编程方法，系统在ＭＳ－Ｗｉ

Research on object models of Geo-thematic graphics

This paper presents the analysis approaches of oriented objects for geo thematic graphics,and structures the object models of geographic data,which are suitable for computer to analyze and process.The models solve the problems of computer compressing store and analysis and processing for map elements,with relationship and coexistence of geo graphics database and geo attribute data files.The system processes spatial data of map elements with topological models,and settles attribute data of map elements with relative mathematics models.Also,the system realizes mutual visits and operations between geo graphics data and attribute ones by the relationship between the two mathematics structures.Furthermore,the system achieves the information and electronic analysis of geo thematic graphics on the platform of MS Windows and Borland OWL,by software programming with object oriented technology.