[R] need help on melt/cast

[John Kane]

And I always have a problem with reshape(). Mind you I often have similar problems with melt()

Anyway with the data.frame xx, try

 melt(xx, id=c("ID"))



--- On Thu, 9/22/11, Uwe Ligges <ligges at statistik.tu-dortmund.de> wrote:

> From: Uwe Ligges <ligges at statistik.tu-dortmund.de>
> Subject: Re: [R] need help on melt/cast
> To: "Eugene Kanshin" <kanshined1 at gmail.com>
> Cc: r-help at r-project.org
> Received: Thursday, September 22, 2011, 10:30 AM
> I can never remember what melt, cast
> and all that means, hence I simpy 
> use reshape() which does not even require any additional
> package:
> 
> reshape(dat, direction="long", idvar = "ID",
>    varying=list(2:4), v.names="Value",
> times=names(dat)[2:4])
> 
> Uwe Ligges
> 
> 
> On 22.09.2011 15:54, Eugene Kanshin wrote:
> > Hello,
> > I need to convert dataframe from:
> >
> >
> ID   T0   T1   T2
> > A    1     2 
>    3
> > B    4     5 
>    6
> > C    7     8 
>    9
> >
> > to:
> >
> > ID Variable Value
> > A       T0   
>    1
> > A       T1   
>    2
> > A       T2   
>    3
> > B       T0   
>    4
> > B       T1   
>    5
> > B       T2   
>    6
> > C       T0   
>    7
> > C       T1   
>    8
> > C       T2   
>    9
> >
> > i tried to use melt cast but it gives me all the time
> not exactly what I
> > need.
> > Thank you.
> >
> >     [[alternative HTML version
> deleted]]
> >
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> ______________________________________________
> R-help at r-project.org
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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.
>