[R] mapping lat and long with maps package

[David Winsemius]

Well, you're the one who offered code without designating what  
libraries were loaded or required. Here's my sessionInfo, ... what's  
yours?

 > sessionInfo()
R version 2.8.1 Patched (2009-01-07 r47515)
i386-apple-darwin9.6.0

locale:
en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] maps_2.0-40 zoo_1.5-5

loaded via a namespace (and not attached):
[1] grid_2.8.1      lattice_0.17-20 tools_2.8.1

-- 
David Winsemius
On Mar 4, 2009, at 5:41 PM, Alina Sheyman wrote:

> When I run this code i get the following error messages
>
> Error in mapgetg(database, gon, as.polygon, xlim, ylim) :
>   NA/NaN/Inf in foreign function call (arg 6)
> In addition: Warning messages:
> 1: In min(x, na.rm = na.rm) :
>   no non-missing arguments to min; returning Inf
> 2: In max(x, na.rm = na.rm) :
>   no non-missing arguments to max; returning -Inf
>
> On Wed, Mar 4, 2009 at 5:27 PM, David Winsemius <dwinsemius at comcast.net 
> > wrote:
> 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
>
>        [[alternative HTML version deleted]]
>
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