hi list, i would like to know how a centroid is defined and calculated. of course it is a point within a closed boundary. but how is the position of the centroid defined? is it estimated randomly? is it the point of gravity - but then - what happens if the polygon is U-shaped?
thank you for helping martin _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser
