R help - Jul 2011 - matching items in a data frame

I have a data frame with 2 columns, the first is an index of participants and
the second is a list of words presented to the participant (see below).
> head(dat)
     s    word
 1a pianist
 1a   sweat
 1a carnage
 1a   nymph
 1a    hank
 1a   waist
> tail(dat)
        s    word
 4a package
 4a   blink
 4a  orange
 4a bedroom
 4a    curb
 4a    bowl

Some of the words are presented to multiple participants others are not. I am
trying to get an index of 1) which words are repeated and  2) how many times
they are repeated. Any suggestions?
Lee

table(dat$word)

Sent from my iPad

On Jul 6, 2011, at 1:41, Lee Averell <Lee.Averell at newcastle.edu.au>
wrote:
> I have a data frame with 2 columns, the first is an index of participants
and the second is a list of words presented to the participant (see below).
> 
>> head(dat)
>     s    word
> 1a pianist
> 1a   sweat
> 1a carnage
> 1a   nymph
> 1a    hank
> 1a   waist
> 
>> tail(dat)
>        s    word
> 4a package
> 4a   blink
> 4a  orange
> 4a bedroom
> 4a    curb
> 4a    bowl
> 
> Some of the words are presented to multiple participants others are not. I
am trying to get an index of 1) which words are repeated and  2) how many times
they are repeated. Any suggestions?
> Lee
> 
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