[R] Ploting NA location points

Peter Malewski y0004379 at tu-bs.de
Fri Aug 11 10:14:33 CEST 2000

On Thu, 10 Aug 2000, Kenneth Cabrera wrote:

> Hello, to everybody!
> Can anybody help me with this problem?
> 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)?


y <- rnorm(10)
x <- rnorm(10)
z <- x
z[c(2,4)] <-NA
points(x[is.na(z)] , y[is.na(z)] ,col=2)

best wishes 

btw: you can use rug to visualize points that are NA at x or y.

** To YOU I'm an atheist; to God, I'm the Loyal Opposition. Woody Allen **
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