Glynn Clements wrote: > > Markus Metz wrote: > >> Please try the new addon v.centerpoint [0]. It calculates various >> center points for point clouds, lines, and areas. Standard options are >> the geometric mean (center of gravity) > > That's the arithmetic mean. > > The geometric mean of a set of N values is the Nth root of the product > of the values (i.e. the logarithm of the geometric mean is the > arithmetic mean of the logarithms of the values). It wouldn't be > meaningful to compute the geometric mean of coordinate data.
Right, I fixed the documentation. Internally, the arithmetic mean has been used already to calculate centers of gravity. Markus M _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev