[R-sig-Geo] polar intertia of a generalized polygon.

[Paolo Piras]

 Hi folks,
I need to compute the polar inertia of a generalized polygon. It can includes points within the perimeter.
Moreover, points are not ordered (i.e. clockwise, etc.). The same is needed in 3D but 2D is sufficient for the moment.
Do you know some function that can do that?
Thanks in advance
Paolo


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