Re: [R] Transposing by a group variable

From: John Kane <jrkrideau_at_yahoo.ca>
Date: Thu, 14 Feb 2008 14:09:38 -0500 (EST)


How do we know what value corresponds to what new variable?

library(reshape)
mm <- melt(d, id="group")
cast(mm, group~value)

will give you something but not quite what you want.

> Hi R,
>
>
>
> Can I transpose a data frame by a particular group
> variable?
>
>
>
> For example:
>
> d=data.frame(group=c(1,1,2,2,2),val=c(6,4,6,3,5))
>
> And my output should be:
>
>
data.frame(group=c(1,2),v1=c(6,6),v2=c(4,3),v3=c(NA,5))
>
>
>
> Many thanks,
>
> Shubha
>
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> privileged i...{{dropped:13}}
>
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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 and provide commented, minimal, self-contained, reproducible code. Received on Thu 14 Feb 2008 - 19:19:56 GMT

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