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@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83
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