Interactive Information Visualization of Trend Information

This paper proposes the visualization cube as a reference model for spatiotemporal trend information. The interactive visualization system for earthquake trend information was proposed at MuST in NTCIR-6 workshop, which defines earthquake trend information as spatiotemporal information and designs the interaction between different views so that temporal and spatial trend information can be effectively combined. By extending the functionality of the system, this paper proposes the concept of visualization cube, which defines the data structure of spatiotemporal trend information, type of views, and interactive operations for generating views. The interactive operations for generating various views include drill down/up, comparison, spin, and transition. The interactive information visualization system for spatiotemporal trend information is also developed based on the concept of visualization cube. The system was used in actual classes of an elementary school, of which the result shows the system has enough usability for 5th-grade elementary school children to perform exploratory data analysis. It is expected the visualization cube contributes to the improvement of the visualization platform that is developed by MuST workshop.