[postgis] Error in creating WKBPolygon by Postgis in Cygwin PostgreSQL

[Frank Warmerdam]

Dave Blasby wrote:
> I'm following Frank's WKB spec for 3d points.  The '80' means that its a
> 3d geometry, so you can expect 3 coords for each point.  If you want
> openGIS spec WKB, you'll have to do a force_2d() on the geometry.

Folks,

Just for reference, the 2.5D extension was designed by Adam Gawne-Cain 
of Cadcorp.  It was formally submitted to the Simple Features for COM
revision working group, but I don't know what became of it after that.
I don't think the published specification was ever updated to include 
it. However, PostGIS, OGR and FME have adopted it. :-)


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


To unsubscribe from this group, send an email to:
postgis-unsubscribe at yahoogroups.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/