| 地理信息尺度的三重概念及其变换 |
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| 引用本文： | 刘凯,毋河海,艾廷华,秦耀辰.地理信息尺度的三重概念及其变换[J].武汉大学学报(信息科学版),2008,33(11):1178-1181. |
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| 作者姓名： | 刘凯 毋河海 艾廷华 秦耀辰 |
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| 作者单位： | 河南财经学院资源与环境科学系，武汉大学资源与环境科学学院，河南大学环境与规划学院 |
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| 摘 要： | 提出了地理信息广义尺度的三重概念体系,解释了它们各自的涵义及其笛卡几积的意义,讨论了广义尺度变换问题.
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| 关 键 词： | 地理信息 三重概念 尺度变换 |
Three-Tiered Concepts of Scale of Geographical Information and Its Transformation |
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| LIU Kai,WU Hehai,AI Tinghua,QIN Yaochen.Three-Tiered Concepts of Scale of Geographical Information and Its Transformation[J].Geomatics and Information Science of Wuhan University,2008,33(11):1178-1181. |
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| Authors: | LIU Kai WU Hehai AI Tinghua QIN Yaochen |
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| Abstract: | At first,the connotation and the dimension of scale of geographical information are extended to full the need of describing the every aspects of it;and three types of concepts of its scale are defined as: dimensions of scale,kinds of scale,components of scale.The dimension of scale of geographical information is consisted of spatial dimension,temporal dimension and semantic dimension.The classifications of scale of geographical information are of phenomena scale,measure scale and token scale.The components of scale of geographical information are of extension,granularity(resolution) and frequence.At last the transform of scale of geographical information and issue of scale choice are discussed. |
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| Keywords: | geographical information three-tiered concepts transformation of scale |
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