The coords are lat/lon, so simplifying by 0.001 is something like 100 meters... That's too coarse for my project.
On Thu, Jul 29, 2010 at 3:49 AM, Maxime van Noppen <[email protected]>wrote: > On 07/28/2010 10:15 PM, Jeff Adams wrote: > >> OK, I finally have it down to a manageable use case. Union these 16 >> linestrings, you get a topology exception. Remove any one of them, you >> don't. What the heck can I do about this? Simplifying and snapping to >> grid, at any reasonable precision, did not help my larger real data (I >> didn't try with this little test case). >> >> Is there any chance that ST_Union has a bug? Isn't it supposed to be >> adding the node it complains is missing? >> > > I got it working by simplifying the geometries: > > st_union(st_simplify(geom, 0.001)) > > if it is of any help. > > -- > Maxime > > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users > -- Jeff Adams Azavea (formerly Avencia) | T: 215.701.7717 | F: 215.925.2663 www.azavea.com
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