[postgis-tickets] [PostGIS] #2534: st_distance is returning incorrect results for large geographies
PostGIS
trac at osgeo.org
Wed Feb 5 12:03:29 PST 2014
#2534: st_distance is returning incorrect results for large geographies
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Reporter: samuelb | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 2.1.2
Component: postgis | Version: 2.0.x
Keywords: st_distance, geography |
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Comment(by pramsey):
I'm really rather shocked this didn't come to light sooner, and now I need
to backtrack a bit and see how long this problem has been around.
Basically a couple algorithms attempt to test edge crossing without
actually computing intersection points. And the code there now mistakes
antipodal edges as crossing cases. Amazing. What idiot wrote that? (oh,
right)
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Ticket URL: <http://trac.osgeo.org/postgis/ticket/2534#comment:5>
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