Hi Juilen, thanks for quick answer.
I have 1 geometry and 1 row on the table. this geometry is multiploygon which consists of 4 polygons. I want to convert this mutlipolygon to one single polygon.. Any idea how I can do this? I hope it is clearer now. Thanks. From: postgis-users-boun...@postgis.refractions.net [mailto:postgis-users-boun...@postgis.refractions.net] On Behalf Of ju Sent: 26 Nisan 2012 18:02 To: PostGIS Users Discussion Subject: Re: [postgis-users] [!! SPAM] multipolygon to single polygon not clear... 1) if you have 4 polygons in 4 rows table distinct, this is not a multi object issu. for this case use dissolve to group polygone into only one, this is not a topic of dump. 2) if you have 1 geometry and 1 row on the tablme, so this is a multi object topic you must sperate the differents objet of the collection here : http://www.postgis.org/docs/ST_GeometryN.html --Extracting all geometries (useful when you want to assign an id) SELECT gid, n, ST_GeometryN(the_geom, n) FROM sometable CROSS JOIN generate_series(1,100) n WHERE n <= ST_NumGeometries(the_geom); best regards, julien Le 26/04/2012 16:27, Mehmet Erkek a écrit : I have multipolygons which I would like to convert a single polygon. is there a way to do this? please check the attached image. I tried st_dump and afterwards st_union , but eventually I get a multipolygon again, not polygon. Mehmet Erkek www.REIDIN.com <http://www.reidin.com/> This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. Please Consider the Environment Before Printing This Email _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users -- Julien-Pierre Guilloux Service scientifique - Géomatique Parc National des Ecrins Domaine de Charance 05 000 GAP tél : 04.92.40.20.10 fax : 04.92.52.38.34 julien.guill...@ecrins-parcnational.fr
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