历史事件时空过程描述及其可视化研究

Research on Spatio-temporal Processes Description of Historical Events and Its Visualization

结合基于事件的时空数据模型和面向对象的思想,提出一种面向历史事件的时空数据模型。分析基于事件、变化与状态之间的关系,描述和再现重大历史事件中的时空信息及时空变化。给出一种结合事件链表与子事件树的历史事件时态树结构,有效地将时间、事件及相关时空对象组织起来,动态追溯、反演和检索历史事件的发展过程与状态。利用事件时态树结构实现历史事件时空过程可视化,并以Adobe Flex为工具开发实现了历史事件时空过程可视化算法,取得良好效果。

A variety of visual elements are used to comprehensively express historical events, which can demonstrate vividly historical pictures. This paper proposes a Historical Events Oriented Spatio-temporal Data Model （ HEOSDM ） through combing event-based spatio-temporal data model and object-oriented idea. Considering the event, change and status,this model can describe and reproduce spatio-temporal information and changes in the major historical events. and a temporal tree data structure of historical events combining event list and sub-event tree is proposed. This structure adopts dual data structures which effectively organize spatio-temporal objects and related events so as to dynamically backtrack, reproduce and search the development process and status of historical events. A temporal tree data structure of events is used to realize spatio-temporal processes visualization of historical events. Adobe Flex is selected to develop and realize the corresponding algorithm and it achieves good effects.