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

Sébastien Durand sebastien.durand at cidco.ca
Thu Sep 18 21:10:44 CEST 2008


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.



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