“轻型”GIS控件的设计与使用

AN INTRODUCTION TO DESIGNS AND USES OF LIGHT GIS CONTROLS

本文首先介绍了构件式GIS与“轻型”GIS控件的概念;接着,作为“轻型”GIS控件实现的技术基础,介绍了一个自开发的GIS系统——“DigMap”的空间数据组织:包括空间数据组织的层次、图幅处理单元的数据结构及空间数据与属性数据管理等;在此基础上,介绍了基于这一数据组织模式的GIS控件——MapObj的设计、实现与实际应用。

In the first place of this paper, we introduce the concept of component GIS and light GIS controls, and then discuss the organization of spatial data in the Digmap GIS which is the technical basis of light GIS controls, including the levels of spatial data, the data structure in the map processing unit, and the management of spatial and attributive data. The GIS controls MapObj developed by the author under this data organization system, its basic functions and usefulness for the user are presented. Finally, a case study of MapObj is discuessed.