reshape(dat, direction="wide", timevar="tr", idvar=c("id", "code","sp" ))[,2:6]
But, I don't understand why you use reshape
On 10/02/2008, juli pausas <[EMAIL PROTECTED]> wrote:
> Dear colleagues,
> I'd like to reshape a datafame in a long format to a wide format, but
> I do not quite get what I want. Here is an example of the data I've
> have (dat):
>
> sp <- c("a", "a", "a", "a", "b", "b", "b", "c", "d", "d", "d", "d")
> tr <- c("A", "B", "B", "C", "A", "B", "C", "A", "A", "B", "C", "C")
> code <- c("a1", "a2", "a2", "a3", "a3", "a3", "a4", "a4", "a4", "a5",
> "a5", "a6")
> dat <- data.frame(id=1:12, sp=sp, tr=tr, val=31:42, code=code)
>
> and below is what I'd like to obtain. That is, I'd like the tr
> variable in different columns (as a timevar) with their value (val).
>
> sp code tr.A tr.B tr.C
> a a1 31 NA NA
> a a2 NA 32 NA
> a a2 NA 33 NA **
> a a3 NA NA 34
> b a3 35 36 NA
> b a4 NA NA 37
> c a4 38 NA NA
> d a4 39 NA NA
> d a5 NA 40 41
> d a6 NA NA 42
>
> Using reshape:
>
> reshape(dat[,2:5], direction="wide", timevar="tr", idvar=c("code","sp" ))
>
> I'm getting very close. The only difference is in the 3rd row (**),
> that is when sp and code are the same I only get one record. Is there
> a way to get all records? Any idea?
>
> Thank you very much for any help
>
> Juli Pausas
>
> --
> http://www.ceam.es/pausas
>
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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