I have a data frame whose rows are 678013 . I would like to remove rows from 30696 to 678013 and then attach a new column with a length of 30595. I tried Y<- X[-30595:678013,] and its not working In addition how do i add a new column Kindly assist. Charles [[alternative HTML version deleted]]
?precedence -5:10 is (-5):10 -- Bert Bert Gunter "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." -- Clifford Stoll On Thu, Jul 2, 2015 at 10:23 PM, Charles Thuo <tcmuigai at gmail.com> wrote:> I have a data frame whose rows are 678013 . I would like to remove rows > from 30696 to 678013 and then attach a new column with a length of 30595. > > > I tried > > Y<- X[-30595:678013,] and its not working > > In addition how do i add a new column > > Kindly assist. > > Charles > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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.
Try y <- x[ -( 30596:678013 ), ] Please note that I have replaced 30595 with 30596 which is I think what you mean. You can add a new column with y$new <- new_column # this is your vector of length 30595 Good luck, Rainer On Friday 03 July 2015 07:23:28 Charles Thuo wrote:> I have a data frame whose rows are 678013 . I would like to remove rows > from 30696 to 678013 and then attach a new column with a length of 30595. > > > I tried > > Y<- X[-30595:678013,] and its not working > > In addition how do i add a new column > > Kindly assist. > > Charles > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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. >
In my experience package "dplyr" has all functions to deal with this kind of problems in a simple and compact way Sergio Il 03/lug/2015 07:26, "Charles Thuo" <tcmuigai at gmail.com> ha scritto:> I have a data frame whose rows are 678013 . I would like to remove rows > from 30696 to 678013 and then attach a new column with a length of 30595. > > > I tried > > Y<- X[-30595:678013,] and its not working > > In addition how do i add a new column > > Kindly assist. > > Charles > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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]]