[R] How to change dataframe to tables

[Dimitris Rizopoulos]

say, 'Dat' is your data frame, then one way to do it is:

with(Dat, tapply(freq, list(hair, eye, sex), c))


I hope it helps.

Best,
Dimitris



On 2/18/2011 8:50 AM, Lao Meng wrote:
> The data is in the attachment.
>
> What I wanna get is:
> , , Sex = Male
>         Eye
> Hair    Brown Blue Hazel Green
>    Black    32   11    10     3
>    Brown    53   50    25    15
>    Red      10   10     7     7
>    Blond     3   30     5     8
> , , Sex = Female
>         Eye
> Hair    Brown Blue Hazel Green
>    Black    36    9     5     2
>    Brown    66   34    29    14
>    Red      16    7     7     7
>    Blond     4   64     5     8
>
>
> Then,how to change the dataframe to tables?
>
> Many thanks for your help.
>
> Best
>
>
>
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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