Conversion of AutoCAD Topographic Maps Based on DWGdirect. NET and ArcGIS Engine

In this paper,a system was compiled from the combination of DWGDirect. NET and Arc Engine based on the characteristics of Auto CAD and ESRI Arc GIS data,which achieved the conversion of Auto CAD topographic maps into GIS data. Various conversion programs were proposed on the basis of early Auto CAD mapping and current CASS mapping.