关键词: 界线符号, 单元循环配置, 单元块, 实部相交

Abstract: According to the Specifications for Cartographic Symbols, different borderline symbols should intersect on the solid part. However, most of graphics software doesn't consider the problem and few research articles are devoted to finding a complete solution. Based on the principle of cell cycle configuration method to design symbol, this paper provides a new algorithm to realize the intersecting of solid parts in the dashed line and designs an automatic processing method. First, the original cell block is split into two parts. Then, the original data layer is broken up into three new layers. Finally, match the new cell block with the new data layer. Practical data are used to validate the method. The results show that our method is highly reasonable and efficient. This paper provides an automatic processing method to improve the efficiency of map editing which takes into account of different grades and different types of borderlines.

Key words: borderline symbols, cell cycle configuration, cell block, intersecting on the solid part