城市通达性面状分布模型研究

Research on Urban Accessibility Distribution Areal Model by Floyd Algorithm and Kriging Interpolation

利用GIS技术构建了地域通达性的面状分布模型,提供了更直观的地域通达性分析方法,弥补了研究点的局限性,以南京市道路空间数据为例,采用Floyd最短路径分析算法获得了空间数据中节点的最短路径及各点基于距离指标的通达性系数,并利用Kriging插值完善数据,最终获得南京市道路通达性面状分布模型。结果表明,该模型与实际相符,有效可行,可供借鉴。

GIS technology is used to establish distribution areal model of urban accessibility for providing a better visual analysis and overcoming the restriction on limited number of nodes in original studies.Based on the spatial data in Nanjing City,this paper carries out the shortest paths between all the nodes and the accessibility factor for each node by using the Floyd shortest path algorithm.Kriging interpolation is applied to compensate for the lack of data and the areal accessibility model of Nanjing City i...