[R] operating on a subset of a dataframe

Cyril Humbert humbertc at univ-mlv.fr
Thu Jul 4 10:13:03 CEST 2002

Perhaps you could use the function subset().
See ?subset

Tim Wilson wrote:
> Hi everyone,
> I've got a dataframe with columns of different types. A certain number
> of columns in the dataframe hold the results of a series of Likert-type
> items. I've got a function that will print a simple table of frequencies
> and I want to apply that function to those columns of the dataframe
> only. What's the best approach?
> -Tim
> -- 
> Tim Wilson      |   Visit Sibley online:   | Check out:
> Henry Sibley HS |  http://www.isd197.org   | http://www.zope.com
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