[postgis-devel] [PostGIS] #1046: Invalid geography polygons: BOOM! Could not generate outside point!
PostGIS
trac at osgeo.org
Tue Jun 21 08:19:44 PDT 2011
#1046: Invalid geography polygons: BOOM! Could not generate outside point!
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Reporter: mwtoews | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 2.0.0
Component: postgis | Version: 1.5.X
Keywords: geography boom |
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Comment(by pramsey):
No, it is a different issue. The point-in-polygon test in geography
involves generating a point that is definitively outside the area, then
counting the number of times the boundary intersects with the maybe-inside
point. As you can imagine, the weakness is being to generate a point that
is definitively outside of an arbitrary area on the sphere.
This is more computational geometry and the work of ages.
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/1046#comment:2>
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