[R] Bug in gap.plot

[Carl Witthoft]

Jim L:  I tried your example under R 2.2.1, and sure enough it
plotted points on the right-hand section.  Sounds like a bug that got 
fixed in the newer versions.
(BTW, I get a warning from plotrix about being built under 2.7, but it 
does seem to execute OK under 2.2.1).

------
example used was
Xdata<-c(2,3,8,9,10)
Ydata<-1:5
gap.plot(Xdata, Ydata,gap=c(5,6),gap.axis="x",type="l")
---------

Carl