[R] basic problem but can't solve it
ggrothendieck at gmail.com
Wed May 23 13:03:32 CEST 2007
Use ave. Assuming DF is your 2 column data frame:
ave(DF[,1], DF[,2], FUN = mean)
On 5/22/07, Benoit Chemineau <benoitchemineau at gmail.com> wrote:
> I have a basic problem but i can't figure it out with the
> table underneath. I would like to compute monthly averages.
> I would like to have the average measure for month #5 for the first
> three rows (the same number in the first three lines) and the average
> measure for month #6 for the last four rows ((the same number in the first
> three lines) in a separate vesctor (let's call it 'result')
> I tried to use a "while" statement inside a "for" loop but it doesn't
> seem to work.
> Can someone please help me with this ?
> Measure Month
> 2.28 5
> 14.04 5
> 0.60 5
> 0.21 6
> 0.96 6
> 0.75 6
> 1.28 6
> Thank you !
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> and provide commented, minimal, self-contained, reproducible code.
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