[R] Binning groups

Julian Burgos jmburgos at u.washington.edu
Wed May 28 21:34:42 CEST 2008


see

?findIntervals

francogrex wrote:
> Hi, this is probably quite simple but I can't seem to do it correctly. I have
> a data frame of counts of infections in different ages; something like:
> count=c(1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 7, 8, 8, 9, 9, 
> 10, 11, 15, 17, 17, 17, 17, 19, 19, 19, 19, 20, 20, 20, 21, 21, 
> 21, 22, 22, 22, 22, 23, 23, 23, 23, 23, 24, 24, 25, 27, 31, 33
> )
> age=c(3, 8, 9, 7, 56, 58, 10, 13, 53, 55, 11, 12, 14, 51, 54, 
> 15, 50, 52, 18, 49, 48, 47, 20, 16, 17, 25, 45, 29, 33, 36, 41, 
> 35, 43, 46, 21, 27, 31, 28, 32, 38, 42, 22, 34, 37, 40, 44, 24, 
> 39, 30, 26, 19, 23)
> 
> frame=data.frame(count, age)
> 
> But the data are too grainy and I would like to bin them in age groups (that
> I chose) to be something like:
> age<10 ...... count=5
> 10=<age <20 ..... count=8 
> etc...
> What is the easiest and quickest way to do this? Thanks



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