[R] Ploting NA location points

R.E. Darnell r.e.darnell at ncl.ac.uk
Fri Aug 11 10:17:11 CEST 2000

Kenneth Cabrera <krcabrer at epm.net.co> writes:


> How can I plot a x,y coordinates, but to plot a "z" variable
> with a different color if it is a z missing value (NA)?


Start with

Ross Darnell
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