Removing Points

["Kogan, Clark" <clark.kogan@grizmail.umt.edu>]

Hello,
I appreciate the prompt and helpful replies that I have received. 

I was wondering if anyone knew how to remove a set of data points from a graph 
from the command line.

For example, say I have done the following:

plot(x1,y1)
points(x2,y2,type="p")
#now I want to remove (x2,y2)

Thanks!
- Clark Kogan