Try this:
xtabs(quantity ~ food + transaction, DF)
On Tue, Jan 18, 2011 at 5:50 PM, chris99 <cheakes@hotmail.com> wrote:
>
> Hi I need some help trying to restructure a data frame:
>
> I have:
> food transaction quantity
> pizza BUY 5
> pizza SELL 3
> apple BUY 2
> orange SELL 1
> pizza BUY 2
>
>
> And the data frame I want to make is:
>
> food BUY SELL
> pizza 7 3
> apple 2 0
> orange 0 1
>
>
>
> I can't figure out the commands to use. Can anyone help?
> --
> View this message in context:
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>
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--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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