| 基于LOD的选取模型应用于电子地图多尺度显示的研究 |
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| 作者单位： | 信息工程大学测绘学院 |
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| 摘 要： | 从电子地图多尺度显示角度出发,提出了基于LOD的选取模型。在选取模型中将显示比例尺和地图比例尺的比值作为LOD算子,总结了LOD算子设置的3个层次,以及分类、分级、要素和空间几何特征等LOD算子的设置规则。
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| 关 键 词： | 电子地图 LOD 算子 多尺度显示 选取 空间几何特征 |
Research of Selection Model Based on LOD Applied to Multi-Scale Display of Electronic Map |
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| Authors: | ZHANG Jin-ming YOU Xiong |
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| Abstract: | A selection model based on LOD to aid the display of electronic map was proposed.The ratio of display scale to map scale was regarded as a LOD operator.The categorization rule,classification rule,elementary rule and spatial geometry character rule of LOD operator setting were also concluded. |
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| Keywords: | electronic map LOD operator multi-scale display selection spatial geometry character |
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