一种多图幅数字地图拼接显示方法

Display Approach for the Multi-Sheet Digital Map

随着数字地球的发展,传统的以图幅为单位的GIS应用模式已满足不了实际应用的需要,本文以数字地图的线要素为研究对象,通过数据拼接结构的设计,研究了一种多图幅数字地图逻辑拼接显示的新方法,从而使GIS能够在更广阔的地理信息范围内进行分析应用。

With the development of the digital earth,the traditional mode of taking a map sheet as an applied unit proves to be insufficient in practical application.In this article,the authors discuss line primitives of a digital map,design a sort of data joint structure on a multi-sheet map,and realize a logical join of a multi-sheet digital map,so that GIS can be used for analysis and application in an even wider range of geographic information.