摘要
地理信息图示中的很多图形要素均是随机曲线，如边界线、河流、海岸、道路等。在地理信息的计算机处理过程中，若要真实描述这类曲线将非常消耗存贮容量，也极大地加重内外交换的负担。该文采用近似折线来定义这类曲线，在成图时对折线的边实施随机化处理，从而构造出模拟曲线。这种方法在地理信息的随机曲线图示中非常有效。
In geographical information (GI) drawing, there are many random curves, like boundary lines, reivers, coasts and roads, etc. During the computer processing of GI, it is capacity consumed to describe these curves truly, and the data exchanging between internal and external memory may be time consumed. The method described in this paper used the broken line to define this kind of curves, implementing random processing for every edge of the broken line, and simulating the random curves. This method is helpful to create the random curves in hydrology and has been applied in the information management of water conservancy project.
出处
《南京理工大学学报》
CAS
CSCD
1996年第4期323-326,共4页
Journal of Nanjing University of Science and Technology
关键词
GIS
地理信息系统
随机曲线
模拟曲线
计算机
geographical information system, geographic pattern, random, curves(graphs), simulation
