[gdal-dev] Asking about Convert Dgn to Shp and OGRLayer::SetSpatialFilter

[Ari Jolma]

On 06/03/2013 12:11 PM, Jukka Rahkonen wrote:
> taibc <taibc_coltech <at> yahoo.com> writes:
>
>> Thanks Jukka,
>>
>> I uploaded the dgn file and shp files (after converting) at the link:
>> http://www.mediafire.com/?aw830x9629j3x9q
>> <http://www.mediafire.com/?aw830x9629j3x9q>
>>
>> Could you please download and check it ?
>>
>> Thanks and regards,
> Hi,
>
> I have only little experience on MicroStation design files and I do not know
> if GDAL has done good work with finding the polygons from entities.


The feature count as returned by ogrinfo seems misleading. It returns 
5137 when in reality there are 12028 linestrings in the file (counted 
with ogrinfo -al Dc19.dgn | grep LINE | wc -l) and 435 polygons in the 
file (and then some points etc.).

Ari


>   However,
> by opening your shp file with OpenJUMP I can find three polygons from that
> place. One is the big one and then there are two identical small ones. See
> http://latuviitta.org/documents/DGN_converted_into_shp_with_GDAL.png
>
> Thus if you cannot select the small polygons with ArcMap is an ArcMap issue.
> Perhaps there is some setting option for controlling how ArcMap behaves with
> selecting polygons which are equal or overlapping/covering/covered
> by/containing each other.
>
> -Jukka Rahkonen-
>
>
>
>
>
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