[postgis-users] The EWKB/EWKT specs should be part of the PostGIS manual

[Ben Harper]

Thanks for the feedback.

I'll take some time on the weekend to prepare patches, etc.

Ben

On Fri, Jul 3, 2009 at 11:07 AM, Mark
Cave-Ayland<mark.cave-ayland at siriusit.co.uk> wrote:
> Ben Harper wrote:
>
>> Sorry to rant about an open source product that's free,
>>
>> But the EWKB/EWKT specs should really be included in the PostGIS manual.
>> Only after a fair amount of mistrial did I discover this:
>>
>>
>> http://postgis.refractions.net/pipermail/postgis-devel/2004-December/000710.html
>>
>> If that was part of the manual, it would have saved me a fair amount
>> of confusion.
>
> Thanks for the feedback. I probably speak for the majority of the PostGIS
> team in that we are so familiar with the code that perhaps things that are
> obvious to us aren't necessarily obvious to the users. Most of our focus is
> on preparing for the 1.4 release at the moment, so if you could contribute a
> patch then it would be gratefully accepted.
>
>> Additionally, the PostGIS manual claims that "every valid WKB/WKT is a
>> valid EWKB/EWKT" but I find this to be untrue.
>> Specifically, if I construct a WKB PointZ geometry, as specified by
>> http://portal.opengeospatial.org/files/?artifact_id=18241
>> and I try to read it via GeomFromEWKB(), I get garbage (A COMPOUND
>> CURVE is what comes out).
>> The docs should be updated to reflect this fact, or the WKB parser
>> should support this part of the spec.
>
> Hmmm this smells like a bug. Are you working with 1.4 or 1.3? Can you post a
> specific test case for us to look at?
>
>
> Many thanks,
>
> Mark.
>
> --
> Mark Cave-Ayland - Senior Technical Architect
> PostgreSQL - PostGIS
> Sirius Corporation plc - control through freedom
> http://www.siriusit.co.uk
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