Thanks for the suggestion. i'll look into it. Henri
________________________________ From: L Bogert-OBrien <[email protected]> To: PostGIS Users Discussion <[email protected]> Sent: Fri, September 10, 2010 3:33:59 PM Subject: Re: [postgis-users] Trying to simplify a collection of polygons Hi Henri, Did you try using ST_MULTI and then check the output? I have had success with this. Regards, Loretta Hello, I have a collection of polygons none of which overlap except perhaps on parts of their outer rings. I have the impression this cannot be turned into a multipolygon because there is overlap. Is there any way of simplfying this collection to make a normal multipolygon? I am thinking of "fusing" the ones that touch. Thankyou Henri
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