On Jun 12, 2013, at 09:47 , Gallon Li wrote:
> i wish to change a column of factor variable to multiple columns of
> zero-ones
>
> for example, my factor could be
>
> ff=c('a','a','b','b','c','c')
>
> then I want to have two columns (for three levels) that are
>
> 0 0
> 0 0
> 1 0
> 1 0
> 0 1
On 06/12/2013 05:47 PM, Gallon Li wrote:
i wish to change a column of factor variable to multiple columns of
zero-ones
for example, my factor could be
ff=c('a','a','b','b','c','c')
then I want to have two columns (for three levels) that are
0 0
0 0
1 0
1 0
0 1
0 1
how can i do this fast?
H
i wish to change a column of factor variable to multiple columns of
zero-ones
for example, my factor could be
ff=c('a','a','b','b','c','c')
then I want to have two columns (for three levels) that are
0 0
0 0
1 0
1 0
0 1
0 1
how can i do this fast?
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