[postgis-users] Centroid Calculation Error???

[David Blasby]

Düster Horst wrote:
> In my opinion the distribution of vertex
> points shouldn't have an influence of the centroid position.


OGC defines centroid as::

Centroid( ):Point—The mathematical centroid for this Surface as a Point. 
The result is not guaranteed to be on this Surface.

I calculate the centroid of the points of the polygon.

dave