On 29 Dec 2008, at 19:19, Obe, Regina wrote:
Andreas,
I think you have unearthed one of the cruel lessons of floating
point math.
Best described in Isaac Kunen's blog.
http://blogs.msdn.com/isaac/archive/2008/08/07/the-imprecise-nature-of-geometry.aspx
Thanks a lot, Regina. I feared something like that might be the cause
of all this, but it's certainly reassuring to know that workarounds
using ST_Distance and ST_DWithin with some epsilon value instead of
ST_Intersects are common practice in these cases.
Best regards,
--
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Andreas Albarello
Analysis & SW Development
Territorium Online srl/GmbH
Via Buozzi/Buozzistraße 12 - I 39100 Bolzano/Bozen
email: [email protected]
web: www.territoriumonline.com
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