[gdal-dev] DGN File with 10 layers recognized in OGR only 1 layer + DGN to SVG converter

[Miro Karpis]

Thanks for the info Frank.So if I understand it correctly than class
OGRFeature should have one method that should give me value of attribute
called 'LAYER' (or similar). Please what is the method called - I can not
see it in the documentation?

thanks again.



On Thu, Nov 1, 2012 at 11:18 PM, Frank Warmerdam <warmerdam at pobox.com>wrote:

>
>
> On Thu, Nov 1, 2012 at 3:11 PM, Miroslav Karpis <miroslav.karpis at gmail.com
> > wrote:
>
>> Hi, please can you help me with following:
>>
>> 1) When I open DGN file which has for example 10 layers,
>>  OGRDataSource::GetLayerCont () returns 1. What can be the problem? The
>> documentation says that OGR DGN is supporting layers.
>>
>
> Miroslav,
>
> DGN layers are represented as an attribute in the features of the single
> OGR layer.  I think the attribute is called LAYER.
>
> Because of the way the dgn file is structured it would be hard to
> represent the DGN layers as OGR layers efficiently.  Also, since all
> features have the same schema there was relatively little value in keeping
> them as distinct layers.
>
>
>> 2) Does anybody know about an example of conversion from DGN to SVG?
>>
>
> I think MapServer has some sort of SVG support and given that MapServer
> has at least some degree of "autostyling" available from OGR DGN it might
> capture some of the look and feel of the original DGN.
>
> I doubt this is a well trod route.
>
> 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    | Geospatial Software Developer
>
>
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