摘要
近年来,数字高程模型(DEM)作为三维地理信息系统的基础数据,越来越广泛应用于各种地理分析当中,如何从DEM数据中提取到更多的地学信息成为当今研究的一个热点。文中深入探讨了基于DEM的各种常用地学分析功能的实现技术,并应用ArcObjects开发工具与面向对象的编程技术,以独立的应用程序实现了DEM的三维显示、坡度分析、通视分析和剖面图绘制等功能地学分析功能,为类似应用提供了借鉴。
In recent years.the-Digital Elevation Model(DEM).as the basic information of the 3D GIS, has been more and more widely used in various geograph- ical analyses.so how to collect more geographical infor- mation from the DEM information therefore becomes a re- search hotpoint in this field currently.In the paper.some techniques to realize various kinds of commonly-used DEM-based geographical analysis functions are dis- cussed in depth.What's more.the techniques including the 3D display.slope analysis.visibility analysis and draft of the section etc.are realized based on the develop- ment tool of the ArcObjects.object-oriented program- ming methods and independent application program, which provide valuable reference for similar application cases.
出处
《矿山测量》
2008年第1期5-7,11,共4页
Mine Surveying
