[ms4w-users] OGR and DGN: doesn't work

Frank Warmerdam warmerdam at pobox.com
Fri Oct 26 11:57:38 EDT 2007

Jeff McKenna wrote:
> You can verify that your ms4w suppports DNG data by executing the 
> following at the commandline:
> - execute: /ms4w/setenv.bat
> - execute: ogrinfo --formats
> - look for a '"DGN" (read/write)' line
> - now try a shp2img command with your mapfile (see 
> http://mapserver.gis.umn.edu/docs/reference/utilityreference/shp2img)
> - make sure your dng layer is in the same projection as your other data
>    - possibly remove all other layers. projection objects, and set the 
> map's EXTENT to that DNG layer, and then retry shp2img
> Mapfile example: 
> http://mapserver.gis.umn.edu/docs/reference/vector_data/dgn
> Here's more reading on how OGR support DGN files: 
> http://www.gdal.org/ogr/drv_dgn.html


The only thing I would add to the above is that while DGN support is standard
in OGR, it only supports pre version 8 DGN files, not the modern microstation
v8 files.  Currently there is no way to directly read v8 files in MapServer
or via OGR.

Best regards,
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org

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