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I am a frequent recipient of microstation dgn files and don't like it because I don't have software to convert it to autocad. I do have ARCVIEW, but I can't edit the files. I have tried other open source programs to convert, but they all are lacking.

I'm wondering if anyone has used QGIS to convert from dgn to shp or dwg file types? I'm skeptical because I noticed that QGIS supports dgn file types, but doesn't support dwg file formats. This is odd...

Anyways, please post up, I'm probably going to install QGIS this week on a production machine!

Thanks

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in ArcView you can export to shapefile then you can edit them. Depending on how complex the DGN's are can be a straightforward process. –  Mapperz Aug 31 '12 at 14:46
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7 Answers

Note also, that GDAL/OGR supports only pre-v8 dgn. What software do you have and what do you use it for? Doesnt Autocad support dgn?

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I use BRICSCAD - a variant of Autocad and intellicad. They ALL USE the dwg format. Apparently dgn's are hard to get freeware for. Like I mentioned, I have arcview and I can manipulate linetypes, lineweights, etc, but I can't directly edit them. If QGIS only supports pre-v8, then it's not going to be very helpful. –  DATAfiend Aug 30 '12 at 15:35
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if you want to convert files from microstation to autocad, you can directly convert files in microstation to dxf format. then just open dxf file in autocad.

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I don't have microstation - that's the point. –  DATAfiend Aug 30 '12 at 15:33
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try FME , costs , but manages all your conversion problems

For me it has been the best spatial tool in my job, i do file type conversion, i reproject data with it, i do some spatial db stuff with it.

http://www.safe.com/

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QGIS uses GDAL/OGR under the hood which supports dgn/dwg (read only) and dxf (read/write). See OGR formats for a list of supported formats. Note: dwg support may be missing as it is not compiled into OGR by default.

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DWG DGN converter can convert dgn to dwg easily, No AutoCAD or MicroStation required.

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I have been wanting to do the same thing, with the same issues. I have successful imported my DGN files into QGIS using the Grass plugin. I used the v.in.ogr tool in Grass. It allows you to bring DGN files in as lines, points and polys.

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For what it's worth GvSIG is said to be able to "work with" DGNs and DWGs. See: http://www.osgeo.org/gvsig. Not tested here, I'm afraid. N.

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