Re: [OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
Hi Wilko, Thank you! Your post has been forwarded to OSGeo-Discuss: http://lists.osgeo.org/pipermail/discuss/2013-November/012529.html Regards, Mateusz On 14 November 2013 15:16, Wilko Quak c.w.q...@tudelft.nl wrote: Hi All, Maybe it's a bit late but I found the PostGIS sql script that we used 10 years ago. I'll attach the old script that we used at the time. With a little bit of work it should run on a current version of PostGIS. Best wishes, Wilko Quak Ps. I cannot send messages to the OSGeo-Discuss mailing list, so if the discussion is still relevant could someone forward it? On 27 October 2013 22:04, Wilko Quak c.w.q...@tudelft.nl wrote: Hi All, The paper is from 2005 Yes, that's what Springer says: http://link.springer.com/chapter/10.1007%2F3-540-26772-7_1 and uses PostGIS 0.6.2. I see, I missed that important detail. I am not sure whether PostGIS had an ST_IsValid function at the time. Anyway when I am back in the office I'll try to find the original scripts. That would be helpful, thanks! Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
Hi, It seems that Peter van Oosterom's e-mail with the SQL script attachment hasn't made it to the Discuss list, so I'm forwarding it here. Mat On 30 October 2013 20:45, Markus Neteler nete...@osgeo.org wrote: Hi Mateusz, the scripts weren't added... SVN hosting might be the best? ciao Markus On Mon, Oct 28, 2013 at 10:00 AM, Mateusz Loskot mate...@loskot.net wrote: On 28 October 2013 00:31, Peter van Oosterom - OTB - TBM p.j.m.vanooste...@tudelft.nl wrote: Dear all, Quite sure the results are correct for PostGIS. The work was done in first half of 2003; see publication pdf's on http://www.gdmc.nl/publications/ PostGIS (and others) did much improve the years shortly after! Please find attached the test script. Peter, Not commenting on PostGIS capabilities at that time, but thank you very much for the scripts! Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Mateusz Loskot, http://mateusz.loskot.net postgis_polygons.sql Description: Binary data ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
On 28 October 2013 00:31, Peter van Oosterom - OTB - TBM p.j.m.vanooste...@tudelft.nl wrote: Dear all, Quite sure the results are correct for PostGIS. The work was done in first half of 2003; see publication pdf's on http://www.gdmc.nl/publications/ PostGIS (and others) did much improve the years shortly after! Please find attached the test script. Peter, Not commenting on PostGIS capabilities at that time, but thank you very much for the scripts! Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
What’s the publication date on this? The PostGIS results are wrong, at least in that they only show the input validation (PostGIS will accept almost any WKT input, with the exception of unclosed rings) and not ST_IsValid validation. P. On Oct 25, 2013, at 5:47 PM, Mateusz Loskot mate...@loskot.net wrote: Hi, In the paper About Invalid, Valid and Clean Polygons [1], on page 11, there is a collection of test polygons used by the authors. Does anyone happen to know where can I find a complete dataset or a form of data definition (WKT, GML, etc.) with those test polygons? [1] http://www.springer.com/cda/content/document/cda_downloaddocument/9783540226109-c1.pdf Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
On 27 October 2013 22:04, Wilko Quak c.w.q...@tudelft.nl wrote: Hi All, The paper is from 2005 Yes, that's what Springer says: http://link.springer.com/chapter/10.1007%2F3-540-26772-7_1 and uses PostGIS 0.6.2. I see, I missed that important detail. I am not sure whether PostGIS had an ST_IsValid function at the time. Anyway when I am back in the office I'll try to find the original scripts. That would be helpful, thanks! Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Test polygons from About Invalid, Valid and Clean Polygons
Hi, In the paper About Invalid, Valid and Clean Polygons [1], on page 11, there is a collection of test polygons used by the authors. Does anyone happen to know where can I find a complete dataset or a form of data definition (WKT, GML, etc.) with those test polygons? [1] http://www.springer.com/cda/content/document/cda_downloaddocument/9783540226109-c1.pdf Best regards, -- Mateusz Loskot, http://mateusz.loskot.net ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
