[R] need help on melt/cast

[Paul Hiemstra]

On 09/22/2011 01:54 PM, 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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Hi,

I see you already got your answer, but maybe than for future
questions... You mention, "I tried to use melt and cast" but you do not
provide example code that shows what you tried. This is important for us
to understand where you reasoning about melt and cast goes wrong.
Especially because a simple (as David mentioned):

melt(dat)

got you the right answer.

good luck,
Paul

-- 
Paul Hiemstra, Ph.D.
Global Climate Division
Royal Netherlands Meteorological Institute (KNMI)
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