<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div><span>Well, ST_SnapToGrid seems to work a little better we get now <span style="font-style: italic;">TopologyException: side location conflict at 59647.5 392932</span></span></div><div><br><span></span></div><div><span>Still GOES seems to crash on Intersection()...... It's a bit funny since all data is produced by PostGis and now PostGis can't handle it's own data.</span></div><div><br><span></span></div><div><span>Ge<br></span></div><div><br></div><div style="font-family: verdana, helvetica, sans-serif; font-size: 10pt;"><div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"><font face="Arial" size="2"><hr size="1"><b><span style="font-weight:bold;">From:</span></b> Sandro Santilli <strk@keybit.net><br><b><span style="font-weight: bold;">To:</span></b> G. van Es <gves2000@yahoo.com>;
PostGIS Users Discussion <postgis-users@postgis.refractions.net><br><b><span style="font-weight: bold;">Sent:</span></b> Tuesday, September 20, 2011 3:07 PM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [postgis-users] ST_Insersection problem<br></font><br>On Tue, Sep 20, 2011 at 06:04:47AM -0700, G. van Es wrote:<br>> I'm interested in the area of the intersection so a boolean answer will not do. The example query is the one I use to prevent my screen from filling with a few hundred-thousands records.<br>> <br>> I have simplified all geometries to POLYGON (no MULTI, no Collection), still st_intersection crashes.<br>> <br>> My conclusion that it is a bug either in PG or GEOS, which also is mentioned in the manual.<br>> <br>> So for any idea about a workaround I would be very happy to know about it.<br><br>Try passing the geometries trough ST_SnapToGrid, making sure they remain
valid.<br><br>--strk;<br><br> () Free GIS & Flash consultant/developer<br> /\ <a href="http://strk.keybit.net/services.html" target="_blank">http://strk.keybit.net/services.html</a><br><br><br></div></div></div></body></html>