Hi Mark,
Like this?
mydf<-read.table(stdin(), head=T)
Trade PosType EnDate EnTime ExDate ExTime PL_Pos
1 1 1040107 915 1040107 1300 164
2 1 1040108 909 1040108 1300 184
3 1 1040115 921 1040115 1300 64
4 1 1040120 1134 1040120 1300 124
5 1 1040121 923 1040121 1300 84
6 1 1040205 1043 1040205 1300 -196
mydf.sort<-mydf[order(mydf$EnDate),]
mydf.sort
Cheers
milton
brazil=toronto
On Fri, Jul 10, 2009 at 10:30 PM, Mark Knecht <markknecht@gmail.com>
wrote:
> I have a data.frame that was built from a number of smaller
> data.frames with rbind. Each ssmaller data.frame bound together runs
> over the same date ranges. The format of the whole thing looks like
> this:
>
> Trade PosType EnDate EnTime ExDate ExTime PL_Pos
> 1 1 1 1040107 915 1040107 1300 164
> 2 2 1 1040108 909 1040108 1300 184
> 3 3 1 1040115 921 1040115 1300 64
> 4 4 1 1040120 1134 1040120 1300 124
> 5 5 1 1040121 923 1040121 1300 84
> 6 6 1 1040205 1043 1040205 1300 -196
>
> I would like to sort the new data.frame using column 3, EnDate from
> lowest to highest. How do I do this?
>
> The help file example section for ?sort doesn't seem to have any
> examples of doing this by column so I'm wondering if this is the done
> with some other command I haven't discovered, or am I just missing the
> obvious at 7:30PM on a Friday night?
>
> Thanks,
> Mark
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
>
http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
[[alternative HTML version deleted]]