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<DIV><FONT face=Arial size=2>Hi list,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'm using PostgreSQL 7.4.6 with
Postgis 0.9.0 and geos 2.1.0.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When I intersect the 2 following polygons, the
answer is an exception :</FONT></DIV>
<DIV><FONT face=Arial
size=2>=================================================================================================</FONT></DIV>
<DIV><FONT face=Arial size=2>select intersection('POLYGON((588912.7
2432104.5,588927.7 2432124, 588928.9 2432123.6, 588923.7 2432132.3,588912.7
2432104.5))','POLYGON((588916.4 2432124.4, 588920.7 2432129.9,588928.6
2432123.7,588930.1 2432122.6,588916.4 2432124.4))');<BR></FONT><FONT face=Arial
size=2>NOTICE: TopologyException: no outgoing dirEdge found
(588929,2.43212e+06)<BR>ERREUR: GEOS Intersection() threw an
error!</FONT></DIV>
<DIV><FONT face=Arial
size=2>=================================================================================================<BR></FONT></DIV>
<DIV><FONT face=Arial size=2>I think the polygons are valid. is there a problem
with the intersection or in my installation ?</DIV></FONT>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>grettings,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Olivier .</DIV></FONT>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>PS : </DIV></FONT>
<DIV><FONT face=Arial size=2>if I translate the polygons before, it works
:</DIV></FONT>
<DIV><FONT face=Arial
size=2>==================================================================================================</DIV></FONT>
<DIV><FONT face=Arial size=2>select intersection('POLYGON((588912.7
104.5,588927.7 124, 588928.9 123.6, 588923.7 132.3,588912.7
104.5))','POLYGON((588916.4 124.4, 588920.7 129.9,588928.6 123.7,588930.1
122.6,588916.4
124.4))');<BR>
intersection
<BR>-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<BR> SRID=-1;POLYGON((588928.6
123.700000000017,588927.7 124,588926.942223355 123.014890362064,588920.367823092
123.878680177714,588922.264519491 128.672149259957,588928.6
123.700000000017))<BR>(1
ligne)<BR>===================================================================================================</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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