Interactive Information Visualization of Trend

This paper proposes the visualization cube as a reference model for spatiotemporal trend informa-tion. The interactive visualization system for earth-quake trend information was proposed at MuST in NTCIR-6 workshop, which defines earthquake trend information as spatiotemporal information and de-signs the interaction between different views so that temporal and spatial trend information can be effec-tively combined. By extending the functionality of the system, this paper proposes the concept of visualiza-tion cube, which defines the data structure of spati-otemporal trend information, type of views, and in-teractive operations for generating views. The inter-active operations for generating various views in-clude 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 sys-tem 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