Re: [R] data frame

From: Sean Davis <sdavis2_at_mail.nih.gov>
Date: Fri 23 Dec 2005 - 01:21:45 EST

On 12/22/05 9:11 AM, "Rhett Eckstein" <glaxowell@gmail.com> wrote:

> Dear R users:
>

>> s4 <- seq(length=10, from=1, by=5)
>> s<-data.frame(s4,s4,s4)

> I would like to do some modification to s.
> And I want the form like the following,if it is possible, how should I do?
> The last column is the sum of previous three column.
> s4 s4.1 s4.2 sum
> 1 1 1
> 2 6 6
> 3 11 1 12
> 4 16 6 22
> 5 21 11 1 33
> 6 26 16 6 48
> 7 31 21 11 63
> 8 36 26 16 78
> 9 41 31 21 93
> 10 46 36 26 108

Rhett,

You might want to look at ?embed. It would need some modification, but you can hopefully get the idea.

 embed(s4,3)

Sean



R-help@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 Received on Fri Dec 23 01:29:59 2005

This archive was generated by hypermail 2.1.8 : Fri 23 Dec 2005 - 02:35:15 EST