[R] Reset par(xaxp) in plot

[Yang, Richard]

R-Helpers;

	This seems simple to set graphic parameter, but I tried plot a graph
with 10 intervals in x axis with  par(xaxp = c(0, 150, 10) but to no avail:

	par(xaxp =c (0, 150,  10))
	plot(age, y18, type="n", ylab="Height (m)", xlab=" age (Yrs)", font
= 2)
	lines(age, y6, lty = 4, lwd = 2)
	lnes(age, y10, lty = 1, lwd =2)
	lines(age, y14, lty = 2, lwd =2)
	lines(age, y18, lty = 3, lwd = 2)
	abline(v=50)

The plot shown only 3 intervals with tick at 0, 50, 100, and 150. and 

> par()$xaxp
[1]   0 150   3

	I use current version Lattice and Grid.

> version
         _              
platform i386-pc-mingw32
arch     i386           
os       mingw32        
system   i386, mingw32  
status   Patched        
major    1              
minor    5.0            
year     2002           
month    05             
day      15             
language R          

	What did I miss?

Richard
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