R help - Feb 2012 - Error in Aggregate

Hi 

My dataframe  looks like this

dataid V1 V2 V3 V4
1  5 6  7 8
1  10 20 30 40
2  23 54 54 6
3  43 54 54 33
4  12 34 54 54
4  34 54 23 52

I have to sum by id

I used command aggregate(data,by =list(data$id),FUN=sum)

Error i face is

Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L), na.rm = FALSE) : 
  sum not meaningful for factors


Please help me


-----
Thanks in Advance
        Arun
--
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The error message is clear: your problem is that your data.frame (note
the period) contains factors. Use str(data) -- also don't use data as
it's a function name -- to see which ones and change as appropriate.

Michael

On Wed, Feb 29, 2012 at 7:16 AM, arunkumar1111 <akpbond007 at gmail.com>
wrote:
> Hi
>
> My dataframe ?looks like this
>
> data> id V1 V2 V3 V4
> 1 ?5 6 ?7 8
> 1 ?10 20 30 40
> 2 ?23 54 54 6
> 3 ?43 54 54 33
> 4 ?12 34 54 54
> 4 ?34 54 23 52
>
> I have to sum by id
>
> I used command aggregate(data,by =list(data$id),FUN=sum)
>
> Error i face is
>
> Error in Summary.factor(c(1L, 1L, 1L, 1L, 1L), na.rm = FALSE) :
> ?sum not meaningful for factors
>
>
> Please help me
>
>
> -----
> Thanks in Advance
> ? ? ? ?Arun
> --
> View this message in context:
http://r.789695.n4.nabble.com/Error-in-Aggregate-tp4431318p4431318.html
> Sent from the R help mailing list archive at Nabble.com.
>
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