| 一种多比例尺GIS方案及其数据模型 |
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| 引用本文： | 王晏民,李德仁,龚健雅.一种多比例尺GIS方案及其数据模型[J].武汉大学学报(信息科学版),2003,28(4):458-462. |
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| 作者姓名： | 王晏民 李德仁 龚健雅 |
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| 作者单位： | 1. 北京建筑工程学院测绘工程系,北京市展览路1号,100083
2. 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,430079 |
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| 基金项目： | 黑龙江省自然科学基金资助项目 (G0 1 0 8)，黑龙江省骨干教师基金资助项目 |
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| 摘 要： | 提出了一种分层分级分区式多比例尺GIS方案，在提出的空间数据模型基础上，按照地图综合方法，发展了适合本文方案的多比例尺GIS空间数据模型，并通过试验说明了新方案及其模型的正确性和可行性，讨论了实施中几种情况的解决办法。
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| 关 键 词： | GIS 多比例尺 数据模型 地图综合 分层分级分区方案 |
| 文章编号： | 1671-8860(2003)04-0458-05 |
| 修稿时间： | 2003年2月25日 |
A Multi-scale GIS Scheme and Its Data Model |
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| WANG Yanmin,LI Deren,GONG Jianya.A Multi-scale GIS Scheme and Its Data Model[J].Geomatics and Information Science of Wuhan University,2003,28(4):458-462. |
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| Authors: | WANG Yanmin LI Deren GONG Jianya |
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| Institution: | WANG Yanmin 1 LI Deren 2 GONG Jianya 2 |
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| Abstract: | This paper proposes an applicable multi-scale GIS scheme and realize it with an appropriate spatial data model. The advantages and disadvantages of four typical multi-scale GIS schemes are analyzed. Based on the analysis, a new scheme-layered, leveled and partitioned scheme is proposed. In the scheme, the object district is divided in several scale layers. Then the minimum scale layer is divided into several smaller scale levels. The nearby larger scale layer is partitioned into several sub districts. Similarly, each sub district is divided into smaller levels, and nearby larger layer is partitioned into sub districts, and so on. Each district with its levels is stored in one database. Based on the spatial data model designed by the authors, according to map generalization methods, a multi-scale GIS data model which is suitable for the new scheme is successfully developed. For the purpose of verifying the validity and feasibility of the new scheme and model, a prototype of multi-scale GIS software is written. Experiments prove that the new scheme and model are really valid and feasible. |
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| Keywords: | multi-scale GIS data model map generalization |
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