try this:
> x <- data.frame(Name = c("a", "b", "c", "d"), Group = c("VR", "MR", "VR",
+ "LR"), Number = c(2, 3, 4, 2))
> x
Name Group Number
1 a VR 2
2 b MR 3
3 c VR 4
4 d LR 2
> x.new <- x[rep(seq(nrow(x)), times=x$Number),]
> x.new
Name Group Number
1 a VR 2
1.1 a VR 2
2 b MR 3
2.1 b MR 3
2.2 b MR 3
3 c VR 4
3.1 c VR 4
3.2 c VR 4
3.3 c VR 4
4 d LR 2
4.1 d LR 2
On Tue, Mar 9, 2010 at 8:06 PM, Steven Kang <stochastick...@gmail.com>wrote:
> Hi all,
>
> I wish to generate additional records according to one of the field values
> in a data frame.
>
> For example, unique record from the input data is required to be generated
> number of times as specified in the 'Number' field in the following code.
>
> > x <- data.frame(Name = c("a", "b", "c", "d"), Group = c("VR", "MR", "VR",
> "LR"), Number = c(2, 3, 4, 2))
> > x
> Name Group Number
> 1 a VR 2
> 2 b MR 3
> 3 c VR 4
> 4 d LR 2
> The desired output is:
>
> Name Group Number
> 1 a VR 2
> 2 a VR 2
> 3 b MR 3
> 4 b MR 3
> 5 b MR 3
> 6 c VR 4
> 7 c VR 4
> 8 c VR 4
> 9 c VR 4
> 10 d LR 2
> 11 d LR 2
>
> It would be greatly appreciated if you could provide resolution in this
> matter.
>
> Thanks.
>
>
>
>
> --
> Steven
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
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> 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.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
[[alternative HTML version deleted]]
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