[postgis-users] (E)WKB specification

[Lars Rößiger]

Perfect! Thank you!

--Lars

Johan C. de Koning schrieb:
> There is something written about WKB in the OGC standard OpenGIS® Simple
> Features Implementation Specification for SQL (SFS) at page 66 - 70 (section
> 3.3). http://portal.opengeospatial.org/files/?artifact_id=829 
> 
> With the PostGIS source code there is also a directory with examples. It
> contains a wkb_reader which also works with the z coordinate. With this code
> you can also find out how the WKB works.
> 
> Hope this can help you.
> 
> Best regards,
> 
> Johan de Koning 
> 
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Frank
> Warmerdam
> Sent: Tuesday, October 25, 2005 3:34 PM
> To: PostGIS Users Discussion
> Subject: Re: [postgis-users] (E)WKB specification
> 
> On 10/25/05, Lars Rößiger <lars.roessiger at d33.net> wrote:
> 
>>Hi.
>>
>>Where can I find the WKB and EWKB specifications? I browsed some
>>documents on opengis.org without success. I tried a search for WKB but
>>no results found :-(
> 
> 
> Lars,
> 
> I believe that WKB is defined in the Simple Features for SQL
> specification.  I don't think the existing document includes the
> 2.5D extensions.  There is a separate document floating around
> that covers that.
> 
> I'm not exactly sure what you mean by EWKB.  There an ISO
> SQL MM specification which defines at least a variety of EWKT
> that OGC will likely try to align with.  It might include EWKB
> (I don't recall).   Of course ISO specs are not normally free.
> I got a review copy under the cross agreement between ISO
> and OGC.
> 
> 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 Programmer for Rent
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