[R] subsetting with condition

[Henrique Dallazuanna]

Try this:

subset(x, ave(x$ID, x$Pol., FUN = length) >= 3)

On Wed, Jun 1, 2011 at 8:00 PM, kristina p <puzarina.k at gmail.com> wrote:
> Dear R Team,
>
> I am a new R user and I am currently trying to subset my data under a
> special condition. I have went through several pages of the subsetting
> section here on the forum, but I was not able to find an answer.
>
> My data is as follows:
>
>  ID                      NAME       MS     Pol. Party
> 1                           John       x       F
> 2                           Mary       s       S
> 3                           Katie      x       O
> 4                           Sarah      p       L
> 5                           Martin      x      O
> 6                           Angelika   x      F
> 7                            Smith      x      O
> ....
>
> I am intested in only those observations, where there are at least three
> members of 1 political party. That is, I need to throw out all cases in the
> example above, except for members of party "O".
>
> Would really appreciate your help.
> K
>
> --
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>
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>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O