• 地球信息科学理论与方法 •

### 土地利用制图综合中的拓扑关系约束性规则

1. 南京师范大学地理科学学院, 南京 210023
• 收稿日期:2013-02-28 修回日期:2013-06-11 出版日期:2013-09-29 发布日期:2013-09-29
• 通讯作者: 吴长彬,E-mail:wuchangbinbin@njnu.edu.cn E-mail:wuchangbinbin@njnu.edu.cn
• 作者简介:吴长彬(1977-),男,福建仙游人,博士,副教授,主要研究方向为GIS、空间关系、土地信息系统。E-mail:wuchangbinbin@njnu.edu.cn
• 基金资助:

国家自然科学基金项目(41101350);江苏高校优势学科建设工程资助项目。

### Topological Restrictions in Land-use Map Generalization

WU Changbin, SUN Zaihong, QIAO Weifeng, LV Guonian

1. College of Geographical science, Nanjing Normal University, Nanjing 210023, China
• Received:2013-02-28 Revised:2013-06-11 Online:2013-09-29 Published:2013-09-29

Abstract:

Land-use map generalization may cost much time for cartographers, so scientists constantly hope to find some methods automatically and have made a lot of efforts, but got few progresses. Right now, people mainly focus on the theory and algorithms of generalization. In fact, the topological relation does great restriction during map generalization. Firstly, while beginning work, operation types of generalization may be chosen according to topological relations between the parcels and other limits (such as Land classification neighborhood), e.g., they may be aggregated when they are adjacent, or amalgamated when disjointed, or reduce to points when inclusive. Moreover, based on the theory of point set topology and representation of Intersection Model, which is well known in GIS, we draw some topological rules from generalization of parcels and linear features of land-use map. E.g., when a long parcel (road or river) is generalized to be a linear feature, its neighboring parcels must be extended synchronously to make sure their topological relations unchangeable. Finally, the possible applications of these topological rules are discussed, as follows: These rules can be applied to check exactly the topological relationships between objects in land-use map before or after generalization, and used as the foundation of generalization algorithms. However, there still are many problems to be studied and improved in future work to make these rules more strictly. We also suggest making topological rule database apart from the algorithms, as rules are unalterable for some time while algorithms are various.