[R] selecting by variable

Petr Pikal petr.pikal at precheza.cz
Wed Aug 27 11:22:12 CEST 2003


On 27 Aug 2003 at 1:49, Eugene Salinas wrote:

> Hi,
> 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))


if A and B are objects storing your limits


> (The data is for individuals and each individual has a
> number of characteristics including X and Y).
> thanks, eugene.
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Petr Pikal
petr.pikal at precheza.cz

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