基于LOD的选取模型应用于电子地图多尺度显示的研究  

Research of Selection Model Based on LOD Applied to Multi-Scale Display of Electronic Map

作　　者：张锦明[1] 游雄[1] 

机构地区：[1]信息工程大学测绘学院,河南郑州450052

出　　处：《测绘科学技术学报》2008年第6期420-424,共5页Journal of Geomatics Science and Technology

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。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.

关 键 词：电子地图 LOD 算子 多尺度显示 选取 空间几何特征 

分 类 号：P208[天文地球—地图制图学与地理信息工程]