[R] data frame

From: Rhett Eckstein <glaxowell_at_gmail.com>
Date: Fri 23 Dec 2005 - 01:11:40 EST


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

Thanks for any help !!



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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 01:18:39 2005

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