R help - Nov 2006 - questions on adding reference line?

Dear Ruser,
  I use abline() function to add the reference line successfully, but i
can't display the values corresponding to the reference line on the x/y
axis, anybody knows how to display it?
 *My simulated  programs:*
y<-rnorm(50)
plot(x,y)
abline(v=0.5)  *#my question is how to display x=0.5 in the x axis?*
Thanks in advance.
-- 
With Kind Regards,

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(..):::::::::
:\.(:::Oooo::
::\_)::(..)::
:::::::)./:::
::::::(_/::::
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[***********************************************************************]
Zhi Jie,Zhang ,PHD
Tel:86-21-54237149   epistat@gmail.com
Dept. of Epidemiology,school of public health,Fudan University
Address:No. 138 Yi Xue Yuan Road,Shanghai,China
Postcode:200032
[***********************************************************************]
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(..):::::::::
:\.(:::Oooo::
::\_)::(..)::
:::::::)./:::
::::::(_/::::
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	[[alternative HTML version deleted]]

Try:

axis(1, 0.5, tick = TRUE)


On 11/18/06, zhijie zhang <epistat at gmail.com>
wrote:
> Dear Ruser,
>  I use abline() function to add the reference line successfully, but i
> can't display the values corresponding to the reference line on the x/y
> axis, anybody knows how to display it?
>  *My simulated  programs:*
> y<-rnorm(50)
> plot(x,y)
> abline(v=0.5)  *#my question is how to display x=0.5 in the x axis?*
> Thanks in advance.
> --
> With Kind Regards,
>
> oooO:::::::::
> (..):::::::::
> :\.(:::Oooo::
> ::\_)::(..)::
> :::::::)./:::
> ::::::(_/::::
> :::::::::::::
> [***********************************************************************]
> Zhi Jie,Zhang ,PHD
> Tel:86-21-54237149   epistat at gmail.com
> Dept. of Epidemiology,school of public health,Fudan University
> Address:No. 138 Yi Xue Yuan Road,Shanghai,China
> Postcode:200032
> [***********************************************************************]
> oooO:::::::::
> (..):::::::::
> :\.(:::Oooo::
> ::\_)::(..)::
> :::::::)./:::
> ::::::(_/::::
> :::::::::::::
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

Your example is incomplete (what is x?), but axis(1, at=0.5) may be what 
you are looking for.

On Sun, 19 Nov 2006, zhijie zhang wrote:
> Dear Ruser,
>  I use abline() function to add the reference line successfully, but i
> can't display the values corresponding to the reference line on the x/y
> axis, anybody knows how to display it?
> *My simulated  programs:*
> y<-rnorm(50)
> plot(x,y)
> abline(v=0.5)  *#my question is how to display x=0.5 in the x axis?*
> Thanks in advance.
>
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595