Enhanced Spatial Stability with Hilbert and Moore Treemaps
Enhanced Spatial Stability with Hilbert and Moore Treemaps
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DOI：
10.1109/tvcg.2012.108
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发表时间：
2013
影响因子：
5.2
通讯作者：
S. Tak;A. Cockburn
中科院分区：
文献类型：
--
作者：
S. Tak;A. Cockburn
Treemaps are a well known and powerful space-filling visualisation method for displaying hierarchical data. Many alternative treemap algorithms have been proposed, often with the aim being to optimise performance across several criteria, including spatial stability to assist users in locating and monitoring items of interest. In this paper, we demonstrate that spatial stability is not fully captured by the commonly used "distance change” (DC) metric, and we introduce a new "location drift” (LD) metric to more fully capture spatial stability. An empirical study examines the validity and usefulness of the location drift metric, showing that it explains some effects on user performance that distance change does not. Next, we introduce "Hilbert” and "Moore” treemap algorithms, which are designed to achieve high spatial stability. We assess their performance in comparison to other treemaps, showing that Hilbert and Moore treemaps perform well across all stability metrics.
