[gdal-dev] S-57 driver Generic attribute DSNM

[Andreas Oxenstierna]

Note that the same logic should be applied to the spatial features, if 
these are handled (i.e. RETURN_PRIMITIVES=ON).
And for feature-feature links, i.e. RETURN_LINKAGES=ON


> Thank you all for your explanations.
>
> I'm sad that this is a mistake in the doc :-) because as you pointed out S57 spec has no GUID definition. With the combination of the LNAM + DSNM, it allowed to have one that would be convenient in a PostGIS database that contains many S-57 charts.
>
> On my fork of GDAL I add this attribute DSNM (as defined in the previous documentation),  and since the DSNM field is mandatory in the S57 spec I did not detect any problem.  (Tested with several S57 source US, UK, ES, HR, ... )
>
> In case it would be helpful, I could make a PR.
>
> -- loïc
>
>
>> On 3 May 2020, at 12:49, Even Rouault <even.rouault at spatialys.com> wrote:
>>
>> On dimanche 3 mai 2020 09:54:22 CEST kusala nine wrote:
>>> DSNM is dataset name. I'ts defined in the DSID which only occurs in the
>>> first field/subfield group in the dataset - not sure what the driver does
>>> in respect of it.
>>   
>> Right. The driver doc was incorrect. I've just fixed it per
>> https://github.com/OSGeo/gdal/commit/c0722aed716e01fa3ab0ccc20fb911369baa3721
>>   
>> Even
>>   
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-- 
Best Regards

Andreas Oxenstierna
T-Kartor Geospatial AB
Olof Mohlins väg 12 Kristianstad
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