Hi Olufemi, I sounds like you have a data frame (let's call it "mydata") with at least three elements (columns). You may be trying to use c() in this way:
y1to3<-c(y1,y2,y3) in which case it won't work. However: y1to3<-c(mydata$y1,mydata$y2,mydata$y3) might do what you want, substituting whatever the name of your data frame is for "mydata". Jim On Thu, Apr 30, 2015 at 1:20 PM, Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > I am sure you can use c() because columns may be vectors even though vectors > are not columns, but you really need to follow the posting guide and provide > a reproducible example for us to show you how. You might find [1] helpful, in > particular as it describes the use of the dput function to give us a few rows > of your data. > > [1] > http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example > --------------------------------------------------------------------------- > Jeff Newmiller The ..... ..... Go Live... > DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... > Live: OO#.. Dead: OO#.. Playing > Research Engineer (Solar/Batteries O.O#. #.O#. with > /Software/Embedded Controllers) .OO#. .OO#. rocks...1k > --------------------------------------------------------------------------- > Sent from my phone. Please excuse my brevity. > > On April 29, 2015 7:48:24 PM PDT, Olufemi Bolarinwa <dafemli...@yahoo.co.uk> > wrote: >>Thank you Jeff for your response. >>My y1, y2, y3 are actually 3 columns in the data so I cannot use the >>c() function to concatenate them. I am confusing the "columns" with >>vectors. I actually meant columns. >>Any help will be much appreciated >>Olufemi >> >> >> >>On Wednesday, 29 April 2015, 22:31, Jeff Newmiller >><jdnew...@dcn.davis.ca.us> wrote: >> >> >>Vectors are not "columns" or "rows". Use the c() function to >>concatenate vectors. >>--------------------------------------------------------------------------- >>Jeff Newmiller The ..... ..... Go >>Live... >>DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live >>Go... >> Live: OO#.. Dead: OO#.. Playing >>Research Engineer (Solar/Batteries O.O#. #.O#. with >>/Software/Embedded Controllers) .OO#. .OO#. >>rocks...1k >>--------------------------------------------------------------------------- >> >>Sent from my phone. Please excuse my brevity. >> >>On April 29, 2015 6:56:46 PM PDT, Olufemi Bolarinwa >><dafemli...@yahoo.co.uk> wrote: >>>Hello,I am estimating a system of nonlinear equation where I need to >>>stack my vector of y. I have data of about 6000units. I tried using >>the >>>rbind but instead of having a vector of 1 by 18000, it is giving me a >>3 >>>by 6000 so that my matrix multiplication is non-conformable. The stack >>>command requires an identifier but in this case, I do not have a >>unique >>>identifier. >>>I would like to stack the the first 6000 units of y1 on the 2nd 6000 >>>units of y2 and 6000 units of y3. >>>Any help will be greatly appreciated. >>>ThanksOlufemi >>> >>> >>> >>> [[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. ______________________________________________ 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.
