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机构地区:[1]北京工商大学计算机与信息工程学院食品安全大数据技术北京市重点实验室,北京100048
出 处:《系统仿真学报》2016年第9期1970-1978,共9页Journal of System Simulation
基 金:"十二五"国家科技支撑计划(2012BAD29B01-2);国家科技基础性工作专项(2015FY111200)
摘 要:变形统计地图是一种可视化表达统计数据地理分布的有效方法,在很多领域都有应用。介绍了变形统计地图(Cartogram)的概念、分类和生成方法。归纳总结了连续型和非连续型、规则型和非规则型变形统计地图的构建算法,从统计失真、地理失真和算法效率三个方面,给出了变形统计地图构建算法的3个评价指标,即面积-属性匹配度、区域形状扭曲度和算法执行时间。根据这3个指标对各类构建算法进行了对比分析,并对未来变形统计地图的发展前景进行了展望。Cartogram is a type of visualization method for effectively presenting the geographical information distribution of the statistical data, which has a wide range of usage in many fields. The concepts, classifications and generation methods of the Cartogram were described. Different generation algorithms of it were summarized, considering the continuity and regularity features. Besides, from the two aspects of both statistical and geographical distortions, three evaluation indexes were proposed: an index that evaluated whether the area sizes represented the true attribute values; and one which represented the degree of the regional shape distortions; and last but not the least, the algorithm execution time; after that the comparison of different Cartogram generation algorithms were generally given and the future of Cartogram was prospected.
关 键 词:变形统计地图 地图连续性 地理失真 统计失真 形状扭曲
分 类 号:TP391[自动化与计算机技术—计算机应用技术]
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