| 地图数据库中的结构化河网及其自动建立 |
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| 引用本文： | 杜清运. 地图数据库中的结构化河网及其自动建立[J]. 武汉大学学报 ( 信息科学版),1988,13(2): 70-77. |
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| 作者姓名： | 杜清运 |
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| 摘 要： | 本文提出了一种基于河段的结构化河网,讨论了这种结构化河网的自动建立过程,主要包括两个结构索引即线索树结构索引及层次结构索引的自动产生;根据包含以上两个索引的结构化河网,提供了若干检索函数,作为地图数据库中结构处理时结构信息的提取手段。
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| 关 键 词： | 结构化河网 线索树结构索引 层次结构索引 |
| 收稿时间： | 1987-07-31 |
The Automatic Establishment of Structured River Network in Cartographic Database |
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| Du Qingyun. The Automatic Establishment of Structured River Network in Cartographic Database[J]. Geomatics and Information Science of Wuhan University ,1988,13(2): 70-77. |
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| Authors: | Du Qingyun |
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| Abstract: | In this paper, the author proposes a kind of link-based structured river network, and discusses the method of its automatic establishment, including the automatic creation of two structure indices, i.e. , threaded tree structure index (TSI) and hierachical structure index ( HSI ). Finally, based on the structured river network which contains these two indices, several retrieval functions are provided as a way to extract structural information during the structure processing in a cartographic database. |
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| Keywords: | structured river network threaded tree structure index hierachical structure index |
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