摘要
针对智慧城市时空信息云平台中海量时空数据的管理和可视化问题,该文提出了一种时空索引建立及时空数据可视化方法。时空索引机制将时间、空间与专题属性作为同等重要的维度,兼顾了三者的查询效率,实现对时空数据的快速有效提取。时空数据可视化表达方法提出了时间轴动画、多时态对比、对象状态回溯等可视化方式,实现时空数据的动态交互式表达。该方法在"智慧常州时空信息云平台"项目中进行了实现,证明这种时空数据组织管理方法可较高效地实现数据的检索调度,且具有较强的可操作性;基于此的时空数据可视化方法亦具备较佳的时空对象动态表达效果。
Considering the mass data of spatiotemporal information cloud platform of smart city, this paper proposed a method of spatiotemporal index building and spatiotemporal data visualization. The spatiotemporalindex system considers time, space and thematic as three important attributes, which can extract spatiotemporal data fast and effective. The spatiotemporal data visualization method contains timeline animation, multi-temporal comparison and object backtracking, which can express spatiotemporal data dynamically and interactively. The proposed methods have been applied to a project called ＂Spatiotemporal Information Cloud Platform of Smart Changzhou＂ to check its feasibility, which proved this method had high retrieval efficiency and better dynamic visualization effect.
出处
《测绘科学》
CSCD
北大核心
2016年第10期100-105,共6页
Science of Surveying and Mapping
关键词
时空数据
时间粒度
时间映射
时空索引
可视化
spatiotemporal data
time granularity
time mapping
spatiotemporal index
visualization
