[postgis-users] how to correct shared boundary data problem?

Kevin Neufeld kneufeld at refractions.net
Tue Mar 24 13:21:54 PDT 2009

Did you try ST_SnapToGrid() to force your geometries to lie on a grid?

Note: this is close to, but not the same thing as, reducing the precision on geometry coordinates.
-- Kevin

John Zhang wrote:
> Hi there,
> I have two feature classes which are supposed to have shared boundaries. 
> However, the data came from another party with the shared boundary data 
> issue, which boundary lines are slightly moved (no snapping during 
> editing?).  I am thinking how I can solve the data problem by using 
> PostGIS methods.
> Any input would be greatly appreciated!
> Thanks a lot
> John
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