<Rizzo.Michael <at> epamail.epa.gov> writes: > > I need to calculate the centroids of some spatial polygons that I have > placed into a Polygons-class object. Is the labeling point in the > Polygons-class the centroid of the polygon? >
Yes. The class documentation at ?"Polygons-class" does not state that this is the case, because other points might be validly inserted as label points. The default constructor uses the centroid of the largest non-hole ring in the Polygons object. Roger Bivand > Thank you for your help. > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
