[postgis-devel] Issue 111 in postgis: Enhancement request - Minimum Bounding Circle for PostGIS

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New issue 111 by rind... at lrcwe.com: Enhancement request - Minimum Bounding  
Circle for PostGIS
http://code.google.com/p/postgis/issues/detail?id=111

Here is a proposed new function for Minimum Bounding Circle in PostGIS 1.4.
  This can be added to lwpostgis_upgrade.sql  and lwpostgis.sql since it is
all a stored procedure.
The results of the function is a polygon buffer representing the minimum
bounding circle.  The default buffer has 192 verticies but this can be
increased.  The Roeck test can be easily computed from this function.  See
http://postgis.refractions.net/pipermail/postgis-users/2008-October/021713.html

The procedure can be improved by adding a Maximum diameter function in GEOS
(not easy ?) and changing my construction of a 3 point circle to a direct
solution.



Attachments:
	MBC.txt  4.3 KB

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