| 电子地图多尺度显示中“放大镜”效果的实现 |
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| 引用本文： | 贾奋励,游雄,宋国民,刘颖真.电子地图多尺度显示中“放大镜”效果的实现[J].测绘学院学报,2009(1). |
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| 作者姓名： | 贾奋励 游雄 宋国民 刘颖真 |
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| 作者单位： | 信息工程大学测绘学院; |
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| 摘 要： | "放大镜"效果是电子地图多尺度表达的形式之一,能够以更多的细节显示某个或某几个重点,而其他区域则以较少的细节表示。"放大镜"效果的实现需要从数学基础、数据组织、显示调度等多方面进行改造,针对上述几方面讨论了"放大镜"效果的实现方式,并进行了实验论证。
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| 关 键 词： | 电子地图 多尺度表达 变比例尺投影 |
Implementation of "Magnifier" Effect in Multi-Scale Display of Electronic Map |
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| JIA Fen-li,YOU Xiong,SONG Guo-min,LIU Ying-zhen.Implementation of "Magnifier" Effect in Multi-Scale Display of Electronic Map[J].Journal of Institute of Surveying and Mapping,2009(1). |
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| Authors: | JIA Fen-li YOU Xiong SONG Guo-min LIU Ying-zhen |
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| Institution: | Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China |
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| Abstract: | "Magnifier" is a multi-scale display form of electronic map which can display more important areas with more details and less important areas with fewer details.In order to implement "magnifier",different part of the screen must display data of different scale,so mathematical basis,data organizing,display management all have to be improved.This paper discussed the implementation of "magnifier" on the aspects mentioned above and did some experiments. |
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| Keywords: | electronic map multi-scale display projection of changing scale |
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