[postgis-users] (E)WKB specification

Lars Rößiger lars.roessiger at d33.net
Tue Oct 25 07:14:46 PDT 2005


yeah, there's an ISO-document covering the WKB-specification:


Frank Warmerdam schrieb:
> On 10/25/05, Lars Rößiger <lars.roessiger at d33.net> wrote:
>>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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