[OpenMap Users] how to determine latitude longitude of shapes?

I have loaded a shape file (into a EsriLayer) which is a collection of
zip code boundaries and would like to determine the center (or
approximate center) of each zip code in terms of its longitude and
latitude so I can draw OMGraphic objects like circles on any given zip
code or in relation to it. How can I do this?

John S. Chamberlain
Charles River Analytics

--
[To unsubscribe to this list send an email to "majdart@bbn.com"
with the following text in the BODY of the message "unsubscribe openmap-users"]