Angular Treemaps - A new Technique for Visualizing and Emphasizing Hierarchical Structured Data

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Conference Proceeding
2012 16th International Conference on Information Visualisation (IV), 2012, pp. 74 - 80
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Space-filling visualization techniques have proved their capability in visualizing large hierarchical structured data. However, most existing techniques restrict their partitioning process in vertical and horizontal direction only, which cause problem with identifying hierarchical structures. This paper presents a new spacefilling method named Angular Treemaps that relax the constraint of the rectangular subdivision. The approach of Angular Treemaps utilizes divide and conquer paradigm to visualize and emphasize large hierarchical structures within a compact and limited display area with better interpretability. Angular Treemaps generate various layouts to highlight hierarchical sub-structure based on userâs preferences or system recommendations. It offers flexibility to be adopted into a wider range of applications, regarding different enclosing shapes. Preliminary usability results suggest userâs performance by using this technique is improved in locating and identifying categorized analysis tasks.
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