The paper introduces the basic concept and principle of the technology in Geographic Information System (GIS), discusses some kinds of technology and methods to carry out.
论文介绍了地理信息技术中有关基本概念、原理和方法，探讨了一些实现技术和方法。
The Map Symbol Base System is not only one of the basic functions of Geographic Information System, but also an important research issue in GIS.
地图符号库系统不仅是地理信息系统中不可缺少的基础功能模块之一，也是GIS的一个重要研究课题。
In the soil resource management information system based on GIS, the most basic operations are the operation of map, the attribute data inquiry and statistics and spatial data inquiry as well.
在基于GIS的土壤资源管理信息系统中，最基本的操作是对地图的操作、属性数据的查询和统计以及空间数据的查询。
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