[R] dropping rows
andy_liaw at merck.com
Thu Dec 2 01:42:38 CET 2004
See ?subset, especially the example there.
(I'm surprised this function isn't in R-intro...)
> From: Tobias Muhlhofer
> Sorry for asking a trivial questions, but I can't seem to
> figure this out.
> I have a dataframe called master containing 30-odd variables.
> In this dataframe, I have observations across these 30 variables from
> 1930 to 2003 (I've made a "year" variable). How can I drop
> all rows for
> which the year is less than 1960? I'm assuming something with
> but I can't quite figure it out.
> I would appreciate a suggestion of some syntax.
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