Algorithm of symbol generation and configuration of land polygons in present land-use map
来源期刊：中国有色金属学报(英文版)2011年第z3期
论文作者：ZUO Xiao-qing NIE Jun-tang
文章页码：743 - 747
Key words：land symbol; present land use map; symbol configuration; spatial conflict
Abstract: The symbolization of land polygon is an important part of cartography. In the mapping of traditional present land-use maps, the symbol of land polygons was usually filled by the method of filling or plotting, but these methods can’t solve the spatial conflicts of the symbol. According to the principle of cartography, the rule of how to symbolize the land polygon was summarized, and a new method that can generate and deploy the land symbols was presented. By making use of C# programming language and Arc Engine developing components, the algorithm can generate land symbols presenting triangle and adjust the coordinate of the symbol. Through mapping the present land-use map of Honghe county, this algorithm can reduce 88.84% of the spatial conflicts error rate compared with the traditional methods. It improves the accuracy and efficiency of the map symbolic.
ZUO Xiao-qing, NIE Jun-tang
(Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China)
Abstract:The symbolization of land polygon is an important part of cartography. In the mapping of traditional present land-use maps, the symbol of land polygons was usually filled by the method of filling or plotting, but these methods can’t solve the spatial conflicts of the symbol. According to the principle of cartography, the rule of how to symbolize the land polygon was summarized, and a new method that can generate and deploy the land symbols was presented. By making use of C# programming language and Arc Engine developing components, the algorithm can generate land symbols presenting triangle and adjust the coordinate of the symbol. Through mapping the present land-use map of Honghe county, this algorithm can reduce 88.84% of the spatial conflicts error rate compared with the traditional methods. It improves the accuracy and efficiency of the map symbolic.
Key words:land symbol; present land use map; symbol configuration; spatial conflict
