center of irregularly shaped polygon

[Jim Hinthorne]

>We would like to find the geographic center of an irregularly-shaped
>polygon.  Any ideas?
>
>Thanks in advance,
>Darrell Pogue
>David Certain
>
There are several definitions of "geographic center."  See GRASS program
r.volume man page an source code for one approach.  This program finds the 
center of raster polygons and outputs the centers as a site list and text 
report.
Jim Hinthorne                        Voice: 509-963-2826
GIS/Geology                         FAX:   509-963-1047
Central Washington Univ.       E-mail: geol1 at cwu.edu