Not weird for me: the max distance is between (1,1) and (-1,-1), which is
sqrt(2^2 + 2^2) = 2.828427
At least, that's what Pythagoras told me once :)
Mathieu.
Le 28/09/2012 23:58, George Silva a écrit :
Hey guys, weird results here...
Check this:
SELECT ST_MaxDistance(
ST_MakeLine(ST_MakePoint(0,0),ST_MakePoint(1,1)),
ST_MakeLine(ST_MakePoint(0,0),ST_MakePoint(-1,-1)));
-- 2.82842712474619 (this corresponds to 2x sqrt(2)?)
For me the max distance between these polylines is 2.
Or am I expecting something diferent for this function?
Thanks
--
George R. C. Silva
Desenvolvimento em GIS
http://geoprocessamento.net
http://blog.geoprocessamento.net
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Mathieu Basille, Post-Doc
~$ locate
Laboratoire d'Écologie Comportementale et de Conservation de la Faune
+ Centre d'Étude de la Forêt
Département de Biologie
Université Laval, Québec
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http://ase-research.org/basille
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``If you can't win by reason, go for volume.''
Calvin, by Bill Watterson.
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