http://www.stat.berkeley.edu/~nolan/stat133/Fall05/lectures/mapsETC.html
Figure 13.8
http://lmdvr.r-forge.r-project.org/figures/figures.html
On Apr 3, 2009, at 4:05 PM, Smith, Phil (CDC/CCID/NCIRD) wrote:
>
> Hi R-help:
>
> I'm just an old guy and new to this list... But have been using R for
> years now.
>
> I want to make a map of counties in the US with shaded colors that
> depend on the level of variable "Y" that I want to map.
>
> I have the US county and state fips codes and the Y variable.
>
> How do I do this?
>
> Please reply to pzs6 at cdc.gov
>
> Thanks,
> Phil Smith
> pzs6 at cdc.gov
>
David Winsemius, MD
Heritage Laboratories
West Hartford, CT