[R] how to modify the tickment of x-axis

[Jie Tang]

hi
 I plot a series of observation data every minutes in a day as the
attachment below

plot(wnd,type='l',lty=1,col='red',lwd=1,xlab=xxlab,ylab=yylab,ylim=YY)
In the figure, the x-axis tickment is the number of data   How can I change
it
fore example 1h 2h 3h 4h and so on ?


-- 
TANG Jie
Email: totangjie at gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China