The output is "","V1","V2","V3" "1",0,0,0 "2",0,0,0 "","V1","V2","V3" "1",1,1,1 "2",1,1,1
and the warning is because no csv-reader is going to make much sense of that. You want col.names=FALSE on the second call. On Fri, 20 Apr 2007, Vaibhav Gathibandhe wrote: > Hello R-Experts, > > I am a beginner to R. Can someone please look at my problem > > I am trying to append the files in R but couldn't get the answer properly. > > My code is > > mat1<-matrix(0,2,3) > mat2<-matrix(1,2,3) > > write.table(mat1,"foo.csv",sep=",",col.names=NA) > write.table(mat2,"foo.csv", sep=",", col.names=NA, append = TRUE) > > I am getting a warning message: > > Warning message: > appending column names to file in: write.table(mat2, "foo.csv", sep = ",", > col.names = NA, append = TRUE) > > Moreover the data of *mat2* is getting appended to "foo.csv" in the > following way > > V1 V2 V3 1 0 0 0 2 0 0 0 V1 V2 V3 1 1 1 1 2 1 1 1 > > If data is getting appended then why I am getting the warning message? > > Moreover is there any way by which i can get the data of *mat2* beside the > data of *mat1* instead of below? Not by appending to a file. You can use cbind() in R. > > > Thanks and Regards, > Vaibhav Gathibandhe > > [[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 > and provide commented, minimal, self-contained, reproducible code. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.