How you have defined z1? On Mon, 6 Feb, 2023, 00:14 粕谷英一, <ekasu...@kyushu-u.org> wrote:
> Do you mean something like the following? Here the first elements are > selected by subset function. > > > x1 > [1] 9 8 7 6 5 4 3 > > z1 > [1] TRUE TRUE TRUE FALSE FALSE FALSE FALSE FALSE FALSE > > subset(x1,z1) > [1] 9 8 7 > > 2023年2月6日(月) 3:34 Upananda Pani <upananda.p...@gmail.com>: > > > > No i am teaching Econometrics and learning R. I am not a student. > > > > Thank you > > Upananda > > > > On Sun, 5 Feb, 2023, 19:51 Chris Ryan via R-help, <r-help@r-project.org> > > wrote: > > > > > Is this a homework problem? > > > > > > --Chris Ryan > > > -- > > > Sent from my Android device with K-9 Mail. Please excuse my brevity. > > > > > > On February 5, 2023 9:07:03 AM EST, Upananda Pani < > upananda.p...@gmail.com> > > > wrote: > > > >Dear All, > > > > > > > >I want to create a vector p and extract first 20 observations using > subset > > > >function based on logical condition. > > > > > > > >My code is below > > > > > > > >p <- 0:100 > > > > > > > >I know i can extract the first 20 observations using the following > > > command. > > > > > > > >q <- p[1:20] > > > > > > > >But I want to extract the first 20 observations using subset function > > > which > > > >requires a logical condition. I am not able to frame the logical > > > condition. > > > > > > > >The code should be > > > > > > > >q <- subset(p, logical condition) > > > > > > > >I am not able to do it. Please let me know what you think. > > > > > > > >Best regards, > > > >Upananda > > > > > > > > [[alternative HTML version deleted]] > > > > > > > >______________________________________________ > > > >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > > >https://stat.ethz.ch/mailman/listinfo/r-help > > > >PLEASE do read the posting guide > > > http://www.R-project.org/posting-guide.html > > > >and provide commented, minimal, self-contained, reproducible code. > > > > > > ______________________________________________ > > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > > https://stat.ethz.ch/mailman/listinfo/r-help > > > PLEASE do read the posting guide > > > http://www.R-project.org/posting-guide.html > > > and provide commented, minimal, self-contained, reproducible code. > > > > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
