摘要
近年来,地理信息系统的迅速发展使得地理信息系统的应用延伸到各行各业。各行业由于自身的特点各异,从而使地理信息系统的应用呈现出百花齐放的局面。选择了GIS中若干个技术进行了研究,这种GIS是基于VC++自主开发的具有完全知识产权的小型地理信息系统,重点分析了鼠标点选图形对象实体算法在GIS系统中图形编辑模块中的应用。提出一种分层粒度点选优化方法,可以提高点选判断的效率。
Recently, Geographic Information System has been developed rapidly and applied to many domains and takes on various states owing to different professional features. In this thesis, we choose some technology used in one Geographic Information System for study. This kind of VC＋＋ based G1S is independently developed and is authorized all the intellectual property rights. This paper studies the point selection method of graphic object with mouse used in GIS drawing editing module and presents a special optimization of granularity multilayer point selection which can enhance the efficiency of point selection.
出处
《洛阳理工学院学报（自然科学版）》
2011年第1期48-52,共5页
Journal of Luoyang Institute of Science and Technology：Natural Science Edition
关键词
GIS
点选
优化
GIS
point selection
optimization
