Hi, Please read "merge".
Regards, Carlos. -----Mensaje original----- De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]En nombre de Ben Bolker Enviado el: martes, 17 de diciembre de 2002 17:32 Para: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Asunto: Re: [R] Quick tip please! Maybe data.frame(d1,d2[!names(d2) %in% names(d1)]) ? On Tue, 17 Dec 2002 [EMAIL PROTECTED] wrote: > I have two CSV files (exported from Excel), say file1 and file2. > > The have the same number of rows, and each has several columns, > with names on the first line; and some of the columns in file1 > are repeated in file2. > > Using the "foreign" package, I can read these in separately > to dataframes say d1 and d2 with > > > d1<-read.csv("file1") > > d2<-read.csv("file2") > > Now I would like to combine these into a single dataframe D, > notionally > > D <- "d1 on the left, d2 on the right" > > which contains all the columns except that duplicates only occur > once (and, preferably, in the order of occurrence on d1 -- i.e. > remove them from d2 if already dound in d1). > > Any tips for how to do this slickly? > > With thanks, > Ted. > > > -------------------------------------------------------------------- > E-Mail: (Ted Harding) <[EMAIL PROTECTED]> > Fax-to-email: +44 (0)870 167 1972 > Date: 17-Dec-02 Time: 15:47:27 > ------------------------------ XFMail ------------------------------ > > ______________________________________________ > [EMAIL PROTECTED] mailing list > http://www.stat.math.ethz.ch/mailman/listinfo/r-help > -- 318 Carr Hall [EMAIL PROTECTED] Zoology Department, University of Florida http://www.zoo.ufl.edu/bolker Box 118525 (ph) 352-392-5697 Gainesville, FL 32611-8525 (fax) 352-392-3704 ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help _____ The information in this email is confidential and it may not be\ ... [[dropped]] ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
