空间邻近的表达及其应用

The Representation and Application of Spatial Neighborhood

空间邻近是极其重要的一类空间关系,甚至被认为是建立空间信息系统的基础。通过梳理人类空间知识中有关邻近的概念,结合相关研究成果分别给出了最邻近、k最邻近、范围邻近以及环绕邻近对应的形式化表达。最后研究了Voronoi邻近在变比例尺移动地图表达中的应用,通过Voronoi邻近的计算,合理确定变比例尺地图的焦点区域范围以及合理比例尺,不仅改善了变比例尺移动地图的易读性,而且提高了变比例尺地图的表达效率。

Spatial neighborhood is an extremely important type of spatial relationship, and is even considered as the basis of establishing a spatial information system. Based on the analysis of spatial neighborhood concepts in human spatial knowledge and relevant research results, the formal expressions are given corresponding with the nearest neighbor, K nearest neighbor, scope neighborhood and surrounding neighborhood. At the end, Voronoi neighborhood application in variable scale mobile map is introduced, which determines reasonable focus area and scale of variable scale map based on neighborhood. The method does not only improve the readability, but also promotes the expression efficiency of variable scale mobile map.