Hi Kevin, Wow, some new concepts here. Now, I'm not in front of my computer, but I'll try these operations asap. I think that I've a couple of questions about them, but I'll wait.
Many thanks! Jorge On Fri, May 8, 2009 at 12:16 AM, Kevin Neufeld <[email protected]>wrote: > Yeah, that's a good question. You could try to break-down your ocean > geometry into the raw linework, properly node the linework, and then rebuild > your polygons. > > ie. > -- Extract the linework > CREATE TABLE water_poly_boundaries AS > SELECT st_collect(st_boundary(the_geom)) AS the_geom > FROM water_polys ; > > -- Node the linework > CREATE TABLE water_boundaries_noded AS > SELECT st_union(the_geom, st_startpoint(the_geom)) AS the_geom > FROM water_poly_boundaries ; > > Then use buildarea or polygonize to rebuild the polygons. > > -- Kevin > > Jorge Arévalo wrote: > ... > >> Oh, and thanks again for your response to my original question. It helped >> me a lot... Maybe is it time to ask for new data, without errors? If not, >> how should I "clean" my data? I tried with ST_Buffer(geom, 0.0) (I read in >> this link >> http://www.bostongis.com/postgis_extent_expand_buffer_distance.snippetthat >> is useful to repair data with self-interesections), but doesn't seem to >> work for me... >> >> Regards >> Jorge >> >> _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users >
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