The example on the help page would seem to be completely on point if I
understand your desire to be plotting text at particular long,lat
coordinates:
?map
text(long, lat, "text")
#
data(ozone)
map("state", xlim = range(ozone$x), ylim = range(ozone$y))
text(ozone$x, ozone$y, ozone$median)
box()
--
David Winsemius
On Mar 4, 2009, at 5:04 PM, Alina Sheyman wrote:
I am trying to overlay a data frame with lat and longitude(which
refer to
zip codes) on the map of US that I get by using map ("states").
Is there anyway to do this or do I have to resort to using maptools?
thank you
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