[postgis-users] Definition of St_Distance in case of 2 non point geometries

Peter Hopfgartner peter.hopfgartner at r3-gis.com
Fri Oct 18 06:14:14 PDT 2013

I took it for granted, that ST_Distance between two two dimensional 
geometries followes the definition of

dist(A, B) = inf(d(a,b)), where a is an arbitrary point in set A and b 
an arbitrary point in set B and d() is the euclidean distance

For some reason I'm now wondering if my assumption is true.

Thanks for your patience,


Peter Hopfgartner

web  : http://www.r3-gis.com

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