自动制图中的以直代曲绘算理论  

Theories to Draw Curves by Straight Lines in Automatic Cartography

作　　者：黄文骞[1] 

机构地区：[1]海军大连舰艇学院海洋测绘系

出　　处：《地矿测绘》1998年第4期15-17,共3页Surveying and Mapping of Geology and Mineral Resources

摘　　要：着重讨论数字地图中数据处理的以直代曲绘算理论。推导了投影平面上以直代曲的极限距离计算公式，代曲极限间隔值的探求。并针对便于程序设计，给出了相应的简便方法。Theories to draw curves by straight lines in data processing in digitizing map is discussed. The calculation formula of extreme distance and limit interval to draw curves by straight lines on projection plane is deduced. And relevant algorithm for easy programming is given.

关 键 词：位置线 微分弧 绘算 

分 类 号：P282[天文地球—地图制图学与地理信息工程]