Hi I would recommend to use list instead
how do you know that the result shall not be A B 1 NA 3 5 4 6 5 3 2 5 > A<-1:5 > B<-4:7 > L<-list(A,B) > L [[1]] [1] 1 2 3 4 5 [[2]] [1] 4 5 6 7 If you insist on data frame you has to tell the program which cells are to be empty or if you have common column(s) you can use merge > CC state psu weight 1 A. P. Urban 0 2 Mah. Rural 0 3 W.B. Rural 0 4 Ass. Rural 0 5 M. P. Urban 0 6 A. P. Urban 0 > CC1 state psu aaa 1 A. P. Urban 1.3 2 A. P. Rural 1.2 3 M. P. Urban 0.8 > merge(CC,CC1, all=T) state psu weight aaa 1 A. P. Rural NA 1.2 2 A. P. Urban 0 1.3 3 A. P. Urban 0 1.3 4 Ass. Rural 0 NA 5 M. P. Urban 0 0.8 6 Mah. Rural 0 NA 7 W.B. Rural 0 NA HTH Petr On 12 Jun 2006 at 14:44, Arun Kumar Saha wrote: Date sent: Mon, 12 Jun 2006 14:44:14 +0530 From: "Arun Kumar Saha" <[EMAIL PROTECTED]> To: "r-help@stat.math.ethz.ch" <R-help@stat.math.ethz.ch> Subject: [R] Combinig two data frames > Dear all r-users, > > Suppose I have two data frame: > > A > 1 > 3 > 4 > 5 > 2 > > and > > B > 5 > 6 > 3 > 5 > > Now I want combine this two data frames without losing any value from > either data frame. More precisely I want to see > > A B > 1 5 > 3 6 > 4 3 > 5 5 > 2 NA > > I tried with cbind function but failed, as it only works when two data > frames have equal number of rows. Can anyone suggest me any code that > can be used for any data set? > > Thanks and regards > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html Petr Pikal [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html