将AutoCad图层导出到ESRI shapefile

Question

I need to export features from a particular layer in the Autocad2013 drawing to ESRI shapefile format. As I am using the c# , I have downloaded ObjectARX for Autocad. But I don't know whether any library support the direct conversion to shapefile format.

I would be thankful if anyone could provide the right suggestion to doing this.

Answer 1

NetTopologySuite (NTS) is a .Net API that is used in Gis related applications. It does contain methods to export to shapefile.

The challenge here would be to convert the Autodesk Objects(AcDbPolyline etc..) to NTS type Geometries. TF.Net is another library that has a decent DwgReaderWriter to convert AutoCad geometries to Nts Geometries. TF.Net actually uses NTS as a reference itself so you need to take care of namespace collision. Or you could use TF.Net alone without Nts but I am not sure if TF.Net has its underlying NTS updated to the latest version.

There are some samples on using TF.Net IO here

Answer 2

Try FDO export options.

Mapguide API documentation and Autodesk Map3d developer documentation has some examples to help you. Also check the sample folder that comes along with Autodesk Map3d which has some sample applications.

Here are some links that might be useful http://trac.osgeo.org/fdo/browser/trunk/Providers/SHP/Managed/UnitTest/ProviderTests/SelectTests.cs

http://trac.osgeo.org/fdo/browser/trunk/Providers/SHP/Managed/UnitTest/ProviderTests/UpdateTests.cs

http://osgeo-org.1560.n6.nabble.com/Shapefile-and-spatial-context-td3900324.html

Answer 3

通过AutoCAD Civil 3D进行Mapexport可以解决这个问题，或者让ARCGIS for AutoCAD看起来像是一个免费插件，可以与ESRI数据层共享AutoCAD线。