Thanks , Fred. Yes, I need the list of island polygons i use the ST_NumInteriorRings(), ... but only obtain the number , and i need obtain the list of feature island.
How resolve this? regards , salas -----Original Message----- From: Fred Lehodey <[email protected]> To: PostGIS Users Discussion <[email protected]> Date: Thu, 10 Dec 2009 19:48:17 +0000 Subject: Re: [postgis-users] how obtain the interior parcels Hi Salas, are "interior parcels" islands ? ST_NumInteriorRings(geometry) Return the number of interior rings of the first polygon in the geometry. Return NULL if there is no polygon in the geometry. ST_NumInteriorRing(geometry) Synonym to NumInteriorRings(geometry). The OpenGIS specs are ambiguous about the exact function naming, so we provide both spellings. ST_InteriorRingN(geometry,integer) Return the N'th interior ring of the polygon geometry. Return NULL if the geometry is not a polygon or the given N is out of range. Fred. On Thu, Dec 10, 2009 at 7:35 PM, Fsalas <[email protected]> wrote: Hi, I have a table parcels , and I need obtain the list of the only interior parcels, the parcels is not overlap. I test ST_Contains(), ST_Intersects() but the result is not correct. Salas. _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
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