基于Circos弦图的居民出行模式可视分析  

Visual analysis of residents travel pattern based on Circos Graph

作　　者：冯涛[1] 艾廷华[1] 杨伟[1] 张翔[1] 信睿[1] 陈学业[2] 

机构地区：[1]武汉大学资源与环境科学学院,武汉430079 [2]国土资源部城市土地资源监测与仿真重点实验室,广东深圳518034

出　　处：《华中师范大学学报（自然科学版）》2016年第3期471-480,共10页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金重点项目(41531180)

摘　　要：基于对城市中出租车OD(Origin-Destination:起始点-终止点)流时空模式的研究,能为城市路网规划、出租车营运方案制定以及居民出行计划提供科学的依据.而时空数据可视化与可视分析是从时空轨迹大数据中感知城市动态、分析OD时空模式的重要手段.该文基于Circos软件,以一种全新的可视化方式对出租车轨迹数据中的OD流进行时空多尺度可视分析.这种方式能在不同时空尺度下表征出租车轨迹OD流的流量、流向及OD流属性特征,能够展示多时空尺度下轨迹OD流数据的时空模式,能更好地理解居民在城市内部区域之间的流动模式,进而揭示居民的出行模式.通过对北京出租车历史轨迹GPS数据进行可视化实验,结果表明该可视化技术能在多时空尺度下表征轨迹OD流数据的时空模式.The study of the spatial-temporal patterns of taxi Origin-Destination（OD）flows in the cities provides reference for urban road planning,taxi operation scheme decisions and residents travel scheduling.Visualization and visual analysis of spatial-temporal data act as important methods for analyzing spatial-temporal pattern of OD flows and sensing city dynamics from spatial-temporal trajectory big data.In the present work,Circos graph is adopted to achieve the multiple spatial-temporal scale visualization of taxi trajectory OD flows.This visualization method characterizes the volume,direction and properties of OD flows in multiple spatial-temporal scales.It helps to get better understanding of residents travel patterns within a city and reveal the travel patterns of residents.With the historical taxi GPS trajectory data in Beijing,a series of visualization experiments are conducted.Results show that the proposed visualization strategy is able to characterize trajectory OD flows patterns in multiple spatial-temporal scales.

关 键 词：Circos弦图 OD流 时空多尺度 可视化 出行模式 

分 类 号：P208[天文地球—地图制图学与地理信息工程]