[postgis-users] PostGIS WKB specification?

[strk at refractions.net]

On Thu, Jan 19, 2006 at 09:47:56AM -0800, Martin Davis wrote:
> Is there a published specification for PostGIS WKB?  It appears to me
> that it is different to the OGC SFS WKB spec (possibly by the addition
> of an SRID, and maybe other things too?)

In postgis package (or CVS) there's a proposed
revision of WKB: doc/ZMSgeoms.txt

OGC is taking another path, but that proposal
still reflect what is currently known as
ExtendedWKB in postgis.

Note that a 2d geometry with NO srid (SRID=-1)
will be rendered as fully compliant WKB/WKT.

--strk;