[R] How to show complete time values in a plot x axis

[Yihui Xie]

Sorry, I thought the time values were equal-spaced...

Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
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School of Statistics, Room 1037, Mingde Main Building,
Renmin University of China, Beijing, 100872, China



On Fri, Sep 19, 2008 at 3:10 AM, Sébastien Durand
<sebastien.durand at cidco.ca> wrote:
> Hello,
>
> I have the following data and I try to properly
> import it in R and plot the 4th column relative to time
>
>   1   2008-249 17:44:17.973    -2.27  00000000: Accepted
>   2   2008-249 17:44:18.014    -2.28  00000000: Accepted
>   3   2008-249 17:44:18.064    -2.29  00000000: Accepted
>   4   2008-249 17:44:18.123    -2.29  00000000: Accepted
>   5   2008-249 17:44:18.174    -2.29  00000000: Accepted
>   6   2008-249 17:44:18.225    -2.29  00000000: Accepted
>   7   2008-249 17:44:18.274    -2.28  00000000: Accepted
>   8   2008-249 17:44:18.325    -2.28  00000000: Accepted
>   9   2008-249 17:44:18.375    -2.28  00000000: Accepted
>  10   2008-249 17:44:18.424    -2.27  00000000: Accepted
>  11   2008-249 17:44:18.475    -2.26  00000000: Accepted
>  12   2008-249 17:44:18.514    -2.24  00000000: Accepted
>  13   2008-249 17:44:18.565    -2.23  00000000: Accepted
>  14   2008-249 17:44:18.615    -2.20  00000000: Accepted
>  15   2008-249 17:44:18.674    -2.17  00000000: Accepted
>  16   2008-249 17:44:18.725    -2.15  00000000: Accepted
>  17   2008-249 17:44:18.774    -2.12  00000000: Accepted
>  18   2008-249 17:44:18.825    -2.09  00000000: Accepted
>  19   2008-249 17:44:18.875    -2.06  00000000: Accepted
>  20   2008-249 17:44:18.925    -2.03  00000000: Accepted
>  21   2008-249 17:44:18.975    -2.00  00000000: Accepted
>  22   2008-249 17:44:19.026    -1.97  00000000: Accepted
>  23   2008-249 17:44:19.055    -1.95  00000000: Accepted
>
> #I copy the previous data then in R dat=readLines("clipboard")
> options(digits.secs=6)
> tmp=unlist(lapply(dat,function(x){unlist(strsplit(x,"\\
> +",perl=TRUE))[3:5]}))
> tmp=matrix(tmp,ncol=3,byrow=TRUE)
> tmp=cbind(paste(tmp[,1],tmp[,2]),tmp[,3])
> time=strptime(tmp[,1], format="%Y-%j %H:%M:%OS")
> value=as.numeric(tmp[,2])
> plot(time,value)
> #How can I show in the x axis the complete time values including the
> decimals.
>
> Thanks a lot
>
> N.B.: I am running the lastest version of R and using it under Windows XP
>
> S.
>