探索会展环境时空数据的可视分析系统

Visual analysis system for exploring spatio-temporal exhibition data

会展环境下的时空数据是复杂的,具有高度离散、不连续、记录不完整等特点。而大多情况下,时空数据本身不仅包含了时间、经度、纬度三维,还隐含速度、加速度、方向等附加属性,使得对这类数据的分析具有挑战。因此,提出一个交互式可视分析系统——会展时空数据可视分析系统(VASTED)。结合多种交互,面向整体与细节,关联分析参会人员的类型和移动规律以及可能的异常事件。该系统利用并进一步改进了三维地图和甘特图,有效地表示数据的多种属性。采用ChinaVis2019挑战1的数据集进行的案例研究,证明了该系统的可行性。

The spatio-temporal data in the exhibition environment is complex,with high discreteness,discontinuity and incomplete records.In most cases,the spatio-temporal data itself not only contains time,longitude and latitude,but also contains additional attributes such as speed,acceleration and direction,which makes the analysis of such data challenging.Therefore,an interactive visual analytic system,Visual Analysis system for Spatio-Temporal Exhibition Data(VASTED)was proposed,which combines multiple interactions to analyze participants’types and movement patterns,as well as possible abnormal events,for the whole and details.The system utilizes and further improves the 3D map and Gantt chart to effectively represent the various attributes of data.The dataset of ChinaVis2019 challenge1 was used for case study to prove the feasibility of the system.