[postgis-users] Trying to simplify a collection of polygons

Henri De Feraudy feraudyh at yahoo.com
Fri Sep 10 12:32:50 PDT 2010


Thanks for the suggestion.
i'll look into it.
Henri



________________________________
From: L Bogert-OBrien <dlawbob at ncf.ca>
To: PostGIS Users Discussion <postgis-users at postgis.refractions.net>
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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