| 一种河网矢量数据的网络渐进式传输方法 |
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| 引用本文： | 杨军,石传奎,闫浩文,程耀东.一种河网矢量数据的网络渐进式传输方法[J].测绘科学,2012,37(3):113-115. |
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| 作者姓名： | 杨军 石传奎 闫浩文 程耀东 |
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| 作者单位： | 1. 兰州交通大学研究生学院,兰州,730070
2. 兰州交通大学数理与软件工程学院,兰州,730070 |
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| 基金项目： | 国家自然科学，兰州交通大学“青蓝”人才基金资助项目，甘肃省教育厅硕士生导师项目 |
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| 摘 要： | 本文提出了一种河网矢量数据双层次多尺度表达的渐进式传输模型,结合目标层次的河流选取和几何细节层次的曲线多尺度表达,建立了河网多尺度数据结构。在Client/Server结构的WebGIS系统中进行了实验,结果表明该方法用于河网矢量地图数据的渐进式传输是有效的。
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| 关 键 词： | 河网矢量数据 多尺度表达 渐进式传输 网络GIS |
A progressive transmission method for river network data on the Web |
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| YANG Jun
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SHI Chuan-kui
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YAN Hao-wen
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CHENG Yao-dong.A progressive transmission method for river network data on the Web[J].Science of Surveying and Mapping,2012,37(3):113-115. |
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| Authors: | YANG Jun SHI Chuan-kui YAN Hao-wen CHENG Yao-dong |
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| Institution: | ②(① School of Graduate Studies,Lanzhou Jiaotong University,Lanzhou 730070,China;② School of Mathematics,Physics and Software Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | This paper presented a bi-hierarchical and multi-scale representation model for purpose of progressive transmission of river network vector data.The multi-scale structure of river network was constructed by integrating selected river branches at the level of object element and simplified curves at the level of geometric detail.The experiments were implemented on a WebGIS system with a client/server structure.The results showed that the progressive transmission method was efficient for river network vector data. |
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| Keywords: | river network vector data multi-scale representation progressive transmission WebGIS |
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