[R] data frame excerption

Uwe Ligges ligges at statistik.uni-dortmund.de
Sat Mar 12 15:29:12 CET 2005


Oleg Bartunov wrote:

> Hello,
> 
> is't possible to get excerptions of data frame using some contstraints,
> something like q1 = q[q$V3<1] ?

Yes, but you have to use the indexing matrix-like (see the manuals):

   q1 <- q[q$V3 < 1, ]

Uwe Ligges


> 
>     Regards,
>         Oleg
> _____________________________________________________________
> Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
> Sternberg Astronomical Institute, Moscow University (Russia)
> Internet: oleg at sai.msu.su, http://www.sai.msu.su/~megera/
> phone: +007(095)939-16-83, +007(095)939-23-83
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