[postgis-users] Postgis clipping
strk at keybit.net
Wed Dec 15 09:02:51 PST 2010
On Wed, Dec 15, 2010 at 05:58:13PM +0100, francescoboccacci at libero.it wrote:
> Hi to all,
> i have a question for you. I have a huge table in postgis where i stored
> polygon features ( GEOMETRY type). I can load the features in Qgis and for this
> reason i'd like to search if possible a postigis function that can make clip
> (or hole) in my a features.
> Pratically I ask to you if there is a possibility to make a clip in a polygon
> features and how it's works. Please can you send me an example?
SELECT ST_Intersection(myPoly, myClippingMask);
SELECT ST_Difference(myPoly, myHolePolygon);
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