DWG图件的坐标系转换方法的探讨与实现

摘要

通过采用相应的数学模型,由最小二乘原理,采用间接平差的方法,基于AutoCAD平台下通过ObjectARX二次开发技术完成了任意两个坐标系统之间的转换,实现通过一定数量的新旧坐标系下重合点来求取转换参数、转换精度评定、坐标文件转换、DWG图件文件转换的功能,解决了现有大量DWG格式的基础测绘成果的坐标系向2000国家大地坐标系的过渡和转换的难题。%Through the use of the corresponding mathematical model,by the least squares principle,using the indirect adjustment method,based on the AutoCAD platform through the ObjectARX two technology development completed two arbitrary coordinate system conversion between,achieved by a certain number of new and old coordinates coincidence point for conversion parameters,conversion,coordinate file conversion,precision evaluation DWG map file conversion function,solves the problems of large format DWG basic surveying and mapping results coordinate system to the 2000 national geodetic coordinate system of transition and transformation problem.