Hello Postgis Users!
This is my first post on this list so I will start by asking
a simple (and probably stupid) question. :)
While using ST_AsKml() to produce an overlay for Google Earth I
noticed that all my geometries where shifted slightly south-east.
I figured this had something to do with the transformation between
the projection that my geometries are stored in (SRID 3021) and WGS84
(4326) that is outputted by ST_AsKml()
Just to test I ran this:
SELECT ST_AsText(
ST_Transform(
ST_Transform(
ST_GeomFromText('POINT(59 18)',4326),
3021),
4326));
I input a point in WGS84 (59,18), transforms it to 3021 and then back to
WGS84. The result I get is:
POINT(58.8672757036296 18.0394763349359)
Can anyone explain this? Am I missing something regarding ST_Transform()?
Im running Postgis 1.5 on Windows.
Thank you for any help!
/Erik
--
Erik Rehn
Slagkryssaren
e...@slagkryssaren.com
www.slagkryssaren.com
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