Dean Rasheed <dean.a.rash...@gmail.com> writes: >>> It looks like what the code is actually computing is the average X >>> position and average Y position of the points listed in the polygon.
> Although, if that's really how it's being calculated, then that's not > really the centroid. Yeah --- according to the wikipedia entry, it's the correct answer if we consider the polygon vertexes as a disconnected collection of points ... but that's probably not what people really expect. I think a "correct" answer in full generality for polygons that are non-convex, contain duplicate points, etc might be pretty hard. regards, tom lane -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs