Zitat von Andrés Maneiro <amane...@icarto.es>: > On 15/06/11 19:48, christian.muel...@nvoe.at wrote: >> No, this is not possible, but it would not really increase performance. >> > > My assumption was that converting a polygon into a point will be an > extremme case of simplification / generalization.
But this changes the topology. A point is an invalid polygon. Things get more complicated. > > I mean, I suppose that simplification is useful because as the polygon > have less vertex is less computer-intensive. Following that reasoning, > computing a point should be less intensive than a polygon with a lot os > vertex. This is correct. But AFAIK the rendering code used by geoserver tries hard not to draw a pixel multiple times. If the distance between to vertices is smaller than a pixel, the second vertex is not drawn. > > Could someone confirm this? If I'm wrong, I'd rather not working on > generating the points and saving so a lot of time. In your case, I would save my time. Look at the results, if the performance is slow, you have still the possibility to add points. > >> Sometimes simplifying a geometry produces an error, you must use the >> next finer level instead. >> >> But if you like, you can add a point geometry column to your postgis >> table and switch in the SLD. >> > > Yep, that's very useful, thanks. I've just discovered these days the > technique explained here: > http://docs.geoserver.org/stable/en/user/styling/sld-tipstricks/mixed-geometries.html#separate-geometry-columns Yep. Cheers Christian > > best, > amaneiro > > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Geoserver-users mailing list > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
