SOmething like this should do it for you:
x <- seq(as.Date('1990-1-1'), as.Date('2030-1-1'), by='1
year')
plot(x,runif(length(x)))
axis(1, at=as.Date('2008-1-1'), label='2008', las=2)
On Sun, Mar 29, 2009 at 5:32 PM, Junjie Zhang <thujacky at hotmail.com>
wrote:>
> Hi there,
>
>
>
> I have a yearly data from 1990-2030. ?The tick marks only show every five
years. ?I want to add another tick mark at 2008 since data beyond that are
predicted. ?How can I just add one tick mark to the X axis? ?Thank you.
>
>
>
> Best,
>
> Jacky
>
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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?