AutoCAD扩展数据在地形图建库中的应用

The Application of the AutoCAD Extended Data to building Topographic Map Databases

通过分析了AutoCAD扩展数据的组织结构,介绍了AutoCAD扩展数据在地形图地物属性录入中的应用,并结合应用给出了有关程序代码,最后介绍了AutoCAD扩展数据转入GIS中的方法。

The thesis analyzes the structure of the AutoCAD extended data, and introduces the application of the AutoCAD extended data to the attribute of the topographic map＇s features,and offers some programs. Lastly the thesis introduces the method of transforming the AutoCAD extended data into the data of GIS.