Basic Polygon(BP)is essential unit for the generation,storage, management of spatial data in the vector based GIS,also it s the map unit that can t be plotted to less unit for thematic series mapping.
基本信息元图可用于地理数据库建立、专题系列制图的统一协调、计算辅助制图、ＧＩＳ空间分析等。
The paper introduced the basic concept of water and soil conservation mapping,concluded the technical thoughts of the series thematic mapping of water and soil conservation assisted by computer.
介绍了水土保持图的基本概念,结合实际工作总结出了计算机技术支持下的水土保持系列专题制图技术思路,以邙山小流域为例对水土保持制系列制图进行了具体实践,给出了部分水土保持专题图示例,对今后进行水土保持制图研究具有一定的指导意义。