期刊
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
卷 26, 期 1, 页码 1033-1042出版社
IEEE COMPUTER SOC
DOI: 10.1109/TVCG.2019.2934784
关键词
Radial charts; time series series data; daily patterns; crowd-sourced experiment
资金
- Austrian Science Fund (FWF) [T 752-N30]
- Universidad Nacional del Sur (Argentina) [PGI 24/K061]
- VRVis [854174]
- Austrian Science Fund (FWF) [T752] Funding Source: Austrian Science Fund (FWF)
Radial charts are generally considered less effective than linear charts. Perhaps the only exception is in visualizing periodical time-dependent data, which is believed to be naturally supported by the radial layout. It has been demonstrated that the drawbacks of radial charts outweigh the benefits of this natural mapping. Visualization of daily patterns, as a special case, has not been systematically evaluated using radial charts. In contrast to yearly or weekly recurrent trends, the analysis of daily patterns on a radial chart may benefit from our trained skill on reading radial clocks that are ubiquitous in our culture. In a crowd-sourced experiment with 92 non-expert users, we evaluated the accuracy, efficiency, and subjective ratings of radial and linear charts for visualizing daily traffic accident patterns. We systematically compared juxtaposed 12-hours variants and single 24-hours variants for both layouts in four low-level tasks and one high-level interpretation task. Our results show that over all tasks, the most elementary 24-hours linear bar chart is most accurate and efficient and is also preferred by the users. This provides strong evidence for the use of linear layouts even for visualizing periodical daily patterns.
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