[R] selecting by variable

Eugene Salinas eugenesalinas2003 at yahoo.com
Wed Aug 27 10:49:23 CEST 2003


I'm a recent R convert so I haven't quite figured out
the details yet...

How do I select one variable by another one? Ie if I
want to draw the histogram of variable X only for
those individuals that also have a value Y in a
certain range?

In STATA I would give something like:

histogram X if ((Y>=A & Y<=B))

(The data is for individuals and each individual has a
number of characteristics including X and Y).

thanks, eugene.

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