[R] overlaying a levelplot on a map plot

[David Winsemius]

On Apr 22, 2010, at 5:33 AM, Simon Goodman wrote:

>
> Thanks for the suggestions.... Unfortunately contour won't in this  
> case as it
> expects the x,y values to be in an ascending sequence.

?order

>

David Winsemius, MD
West Hartford, CT