Does the "labpt" object in the Polygons-class represent the centroid of the polygon

<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.