R help - Apr 2011 - split data frame by factor

Dear Community,

I have a dataframe like this one:

A	B
5	1
6	1
7	1
8	1
9	2
10	2
11	2
12	2

I have a problem splitting up the above data frame in respect to the
factor represented by B, whereas the resulting vector should contain
the numeric values only. I tried split() but it produces this:
A	B
[1]
5	1
6	1
7	1
8	1
[2]
9	2
10	2
11	2
12	2

I want to achieve this,though:

A	
[1]
5	
6	
7	
8
[2]	
9	
10	
11	
12	

How is this done? Thank you very much in advance.

Best Regards.

sorry, the problem has been solved.

On Mon, Apr 25, 2011 at 11:28 PM, ivan <i.petzev at gmail.com>
wrote:
> Dear Community,
>
> I have a dataframe like this one:
>
> A ? ? ? B
> 5 ? ? ? 1
> 6 ? ? ? 1
> 7 ? ? ? 1
> 8 ? ? ? 1
> 9 ? ? ? 2
> 10 ? ? ?2
> 11 ? ? ?2
> 12 ? ? ?2
>
> I have a problem splitting up the above data frame in respect to the
> factor represented by B, whereas the resulting vector should contain
> the numeric values only. I tried split() but it produces this:
> A ? ? ? B
> [1]
> 5 ? ? ? 1
> 6 ? ? ? 1
> 7 ? ? ? 1
> 8 ? ? ? 1
> [2]
> 9 ? ? ? 2
> 10 ? ? ?2
> 11 ? ? ?2
> 12 ? ? ?2
>
> I want to achieve this,though:
>
> A
> [1]
> 5
> 6
> 7
> 8
> [2]
> 9
> 10
> 11
> 12
>
> How is this done? Thank you very much in advance.
>
> Best Regards.
>