基于组件式GIS技术的中国地形图分幅表查询系统

Query System on Segmental Map-Tables of Relief Maps in China Based on ComGIS

组建式软件技术不仅是软件技术发展的主流,而且是地理信息系统发展的热点,并可能成为地理信息系统发展的主要方向。依据国家基本比例尺地形图分幅和编码规则,并利用编程语言自动生成Generate格式的分幅表原始数据,利用ArcView3.3和ArcInfor3.3对原始数据进行数据格式转换、建立拓扑关系、空间配准、属性表关联等处理,最终生成了不同比例尺的中国地形图分幅表空间数据库。在该数据库的基础上,利用面向对象的Visual Basic开发平台,调用MO(MapOb-jects2.2)组件,开发了专题信息系统软件中国地形图分幅表查询系统。

The technology of component software has been one of mainstreams in the development of software technologies today. It is also one of the hotspots of the Geographic Information System （GIS）. Component GIS would be an important direction in the development of GIS in future. In this paper a query system for segmental map-tables of relief maps in China was developed based on ComGIS technologies. The segmental map-tables of relief maps were made according to the regulation of dividing-map and map-coding of national basic scale relief maps. Firstly the data with generate format were made and then the original generate data were converted into Shapfile data by using the predominant spatial analysis function of Arcview3.3 of GIS tools. Finally, spatial database of the different scale relief maps in China was created. On the base of the spatial database,the object oriented VB （Visual Basic6.0） develop platform and MO （MapObjects2.2） component were adopted to compile the thematic geographic information system software - query system on segmental map-tables of relief maps in China.