[postgis-users] ST_Translate

Paragon Corporation lr at pcorp.us
Wed Jul 9 00:11:14 PDT 2008


Doesn't quite make sense to me why translating before ST_Union would cause
distortion if you are translating all the same amount.

What is the SRID of the data you are translating and what does your
translate query and union query look like?


-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Bob
Sent: Tuesday, July 08, 2008 5:30 PM
To: PostGIS Users Discussion
Subject: [postgis-users] ST_Translate

I've imported a shapefile that requires six rows in the table.

When I translate that shape, of six rows, to another location the shape
becomes distorted.

When I collect the six rows by using ST_Union, then translate the single row
to the new position, there is no distortion.

Is there a method of using ST_Translate, without also using ST_Union, and
still avoid the distortion of the shape??

I need the  geometries of the shape separate to be able to identify the
parts of the shape I need. I seem to lose this informaion when I employ


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