Effectiveness and Efficiency of Map Symbols for Dynamic Geographic Information Visualization
Effectiveness and Efficiency of Map Symbols for Dynamic Geographic Information Visualization
复制标题
动态地理信息可视化地图符号的有效性和效率
DOI：
10.1559/1523040639298
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发表时间：
2012-01
影响因子：
2.5
通讯作者：
Wang, Jue
中科院分区：
文献类型：
--
作者：
Dong, Weihua;Ran, Jing;Wang, Jue
动态地图符号的质量对时空变化的表达起着重要的作用。本文报告了一项关于动态符号质量的调查。为了评估这些符号的质量，一组交通流量数据被用于生产不同类型的动态地图，重点是四个变量，即大小，颜色，帧速率和显示格式。两个定量指标用于分析，即偏差和响应时间。一组交通数据用于制作动态地图以供评估。实验结果表明，对于相同帧率和显示格式的动态地图，尺寸比颜色更有效、更高效。在1024 × 768像素的大幅面显示器上，最有效的颜色类别数是10。在1024 × 768像素的大幅面显示器上，最有效的尺寸类数是15。动态地图动画的有效帧速率小于Internet上的普通动画或Quick Time和AVI格式视频的有效帧速率。最高效、最有效的帧速率在颜色表达中为每秒3帧，在尺寸表达中为每秒6帧。总之，大幅面显示器上的颜色、尺寸和帧速率的有效和高效值小于小幅面显示器上的值。这些结果表明，在小格式显示器上应降低帧速率。希望本研究结果能对地理资讯可视化动态地图符号的设计有所帮助。
The quality of dynamic map symbols plays an important role in the representation of spatial-temporal changes. This paper reports an investigation into the quality of dynamic symbols. To assess the quality of such symbols, a set of traffic flow data is used for the production of different kinds of dynamic maps, with focus on four variables, i.e. size, color, frame rate and display format. Two quantitative measures are used for analysis, i.e. deviation and response time. A set of traffic data is used for the production of dynamic maps for evaluation. The experimental results show that the size is more efficient and more effective than color for dynamic maps with the same frame rate and display format. The most efficient and effective color class number is 10 on the large format display such as 1024 × 768 pixels. And the most efficient and effective size class number is 15 on large format display such as 1024 × 768 pixels. The effective frame rate for dynamic map animation is smaller than that of the general animation on the Internet or Quick Time and AVI format video. The most efficient and most effective frame rate is 3 frames per second in the color expression and 6 frames per second in the size expression. In sum, the effective and efficient value of color, size and frame rate on large format display is less than the value on the small format display. These results suggest the frame rate should be reduced on the small format display. It is hoped that the results from this study will be of help in the design of effective and efficient dynamic map symbols for geographical information visualization.
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