| 城市交通网络面向对象的时空数据模型研究 |
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| 引用本文： | 余志文.城市交通网络面向对象的时空数据模型研究[J].测绘科学,2002,27(4):31-34. |
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| 作者姓名： | 余志文 |
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| 作者单位： | 中山大学遥感中心,广州,510275 |
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| 摘 要： | 原有的城市交通网络数据模型无法对大比例地图中道路的面状特征进行描述。本文引入面向对象的时空数据模型 ,把各种实体作为对象 ,把道路作为面状要素描述。作为面状要素的道路对象直接继承原有道路的非空间特征 ,通过道路中心线对象和交点对象来继承原有线状要素的道路特征 ,包括网络关系和叠加关系等 ,通过车道段对象来增加作为面状要素的道路特征
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| 关 键 词： | 交通网络 数据模型 面向对象 道路 特征 |
| 文章编号： | 1009-2307(2002)04-0031-04 |
| 修稿时间： | 2002年4月18日 |
The Research of Object-oriented Spatio-Temporal Data Model for Urban Traffic Networks |
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| YU Zhi,wen.The Research of Object-oriented Spatio-Temporal Data Model for Urban Traffic Networks[J].Science of Surveying and Mapping,2002,27(4):31-34. |
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| Authors: | YU Zhi wen |
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| Abstract: | Old data model for urban traffic networks couldn't describe area shape feature of road in the map of big scale. The paper introduced object oriented spatio temporal data model, looked on all kinds of things as objects and described road as face shape element. Road object as face shape element inherited non spatial feature of road directly, inherited the feature of road which looked as line shape element by road center line objects and intersection point objects, added the feature of road which looked as face shape element. |
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| Keywords: | traffic networks data model object oriented road feature |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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