A Visualization Technique for Hierarchical Time Series Task Data

This paper presents an information visualization technique that represents both time series information and hierarchical structure onto a two-dimensional display space. It represents time series data as bar charts along the horizontal axis of a screen, and hierarchical structure as nested rectangular borders enclosing the bar charts. It packs the nested rectangular borders representing hierarchical structure so that it can represent a lot of information in a limited display space. We suppose there are various applications of the technique since we can obtain much information from large-scale data in one display. This paper shows the visualization result of a task table used for business progress management and loads of a parallel computing environment as examples of results of the proposal technique.