[R] ?plot problem

[Paul, David A]

Thanks to Dr. Thomas Hotz, Prof. Brian Ripley, Dr. Dennis
Murphy, and Dr. David Scott for their replies.

Trying an idea:

> x <- c(1,2,3,4)
> y<-c(2,4.2,5.9,9)
> temp<-data.frame(cbind(x,y))
> attach(temp)
> temp.lm <- lm(y~x)
> windows()
> plot(temp.lm)
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
> dev.off()
> windows()

I was unable to see the Cook's distance plot as before (using
the Page Up and Page Down keys).  So I implemented another
suggestion:

> windows()
> plot(temp.lm)
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
Hit <Return> to see next plot: 
[Use Menu: History|Add]

After doing this, the Cook's distance plot was "saved" so that
Page Up and Page Down worked properly.  Question:  Is there
a way to use a line command to "add" the last graph to the
history?


Much thanks again,
  david paul