[postgis-devel] [PostGIS] #1173: TopologyException from intersection of valid geography
PostGIS
trac at osgeo.org
Tue Feb 7 16:07:50 PST 2012
#1173: TopologyException from intersection of valid geography
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Reporter: jgilman | Owner: strk
Type: defect | Status: closed
Priority: medium | Milestone: PostGIS 2.0.0
Component: postgis | Version: trunk
Resolution: wontfix | Keywords:
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Changes (by pramsey):
* status: reopened => closed
* resolution: => wontfix
Comment:
The problem is that the ST_Intersection function is not actually a
geography implementation, it's a geography wrapper around a reprojection.
And for sufficiently large objects the reprojection is into mercator which
means you end up with an invalid geometry and boom, everything is over at
that point. The answer is a more subtle hack in reprojection-wrappers for
geography, I think.
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1173#comment:9>
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