[R] add factor to dataframe given ranges

Albert Vilella avilella at gmail.com
Thu Dec 22 16:58:15 CET 2005

Hi all,

I would like to factorize the entries in a dataframe given some
groupings. E.g:

mydf = data.frame(
  a = rnorm(100,10),
  b = rnorm(100,10),
  c = rgamma(100, 1, scale=1))

group = hist(mydf$c, breaks="FD")

The idea is to create a factor "mydf$d" with levels corresponding to
the ranges in group$breaks.

There must be an easy way to do this that I haven't found out.

Thanks in advance,


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