【作者】 徐菲； 杨建国；

【Author】 Fei XU;Jianguo YANG;School of Geoscience and Engineering, Hohai University;Air Defence Forces Academy;

【机构】 河海大学地球科学与工程学院； 防空兵学院；

【摘要】 GIS系统中的数据采集和更新都有赖于编辑功能模块的参与,编辑模块设计的好坏不仅关系着系统的效率,同时也影响着用户的可用性体验和对系统的评价。本文通过研究地理实体向几何图形的抽象,地理实体特征的显示与操作的分离,阐述了编辑模块的设计方法并对编辑模块进行了详细设计,重点讨论了GIS系统中如何用几何模型来精确的描述地理实体,以及在编辑的时候几何模型和地理实体模型如何协作的问题。更多还原

【Abstract】 The data collection and updating are all related to editing module in GIS; whether or not the editing module is good determine the system effect and the feeling of the user even the users’ judgments. This passage via researching abstract from geo-entities to geometry graphics, display of geo-entities character and separate of operation, expound the design method of the module of editing in GIS, and getting the particular design for the module of editing in GIS. This thesis mainly talks about how to describe the geo-entities via geometry model and how the geometry model and the geo-entities model cooperate with each other.更多还原