| GIS中矢量与栅格数据相互转换方法研究 |
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| 引用本文： | 彭仪普.GIS中矢量与栅格数据相互转换方法研究[J].四川测绘,1998,21(2):62-65. |
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| 作者姓名： | 彭仪普 |
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| 作者单位： | 长沙铁道学院!长沙，410075 |
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| 摘 要： | 本文是关于地理信息系统中数据转换方法的实验研究。作者在分析了数据转换各种方法的优缺点后，在矢量结构向栅格结构特换中，采用了高效的通界代数法思想；在栅格结构特矢量结构中，采纳了新颖的具拓扑关系的转换方法．改进了其搜索迤界、判断结点和起始点查找等栅格数据转矢量数据过程中的难点技术。算法可靠性好且占用内存较小。
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| 关 键 词： | 栅格结构 矢量结构 边界代数 拓扑关系 搜索边界 判断结点 起始点查找 |
RESEARCH FOR DATA TRANSFORMATION METHODS BETWEEN RAFTER STRUCTURE AND VECTOR STRUCTURE IN GIS |
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| Peng Yipu.RESEARCH FOR DATA TRANSFORMATION METHODS BETWEEN RAFTER STRUCTURE AND VECTOR STRUCTURE IN GIS[J].Surveying and Mapping of Sichuan,1998,21(2):62-65. |
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| Authors: | Peng Yipu |
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| Institution: | Chang sha Railway College |
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| Abstract: | ] This paper is devoted to research for data transformation metheds In GIS(Geographic Information System). After detail analysing the advantages and disadvantages of various data transformation methods, in transforming vector sttucture to rafterstructure, the author adopts boundary algebra, which is highly efficient; and in transforming rafter structure to vector structure, a new method emphaing topoogy relation isused which improves boundary searching, intersection point judgement and start-endpoint detection, etc, which are the difficult technofogy in transformation of rafter structure to vector structure. The method of calculation is highly reliabe and occupies relatively small memory space. |
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| Keywords: | rafter structure vector structure boundary algebra topology relationboundary searching intersection point judgement start-end point detection |
| 本文献已被 CNKI 维普 等数据库收录！ |
