Hi, It sounds like the first column that is "added" is actually the row names. That's why a previous answer pointed this argumented. Default for write.csv is to write the row names along with the data. So, this should work: write.csv2(exampleDataframe,file="exampleDataframe.csv", row.names=FALSE)
Xavier ----- Mail Original ----- De: "Lavri Labi" <lavri.l...@tu-dortmund.de> À: "Jorge Ivan Velez" <jorgeivanve...@gmail.com> Cc: r-help@r-project.org Envoyé: Jeudi 18 Juin 2009 12h35:31 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne Objet: Re: [R] Questíon regarding the use of write.csv2, write.table ... Dear Jorge, thank you for the quick answer. But I am afraid you didn´t understand my problem. I want to write the following data frame "exampleDataframe" in a csv2-file. "a";"b";"c";"d" 1 ; 2 ; 3 ; 4 5 ; 6 ; 7 ; 8 9 ; 0 ; 1 ; 2 After sending the command: write.csv2(exampleDataframe,file="exampleDataframe.csv") I become the following file: "";"a";"b";"c";"d" 1 ; 1 ; 2 ; 3 ; 4 2 ; 5 ; 6 ; 7 ; 8 3 ; 9 ; 0 ; 1 ; 2 How can I delete the first column added, which I do not need? The row.names you suggest me is not reallly helpful in this case. Cheers, Lavri > Dear Lavri, > Take a look at the row.names argument in ?write.table. > > HTH, > > Jorge > > > On Thu, Jun 18, 2009 at 4:09 AM, Lavri Labi > <lavri.l...@tu-dortmund.de>wrote: > >> Hi all, >> >> I use "write.csv" and "write.table" to write a data frame in a file like >> following: >> write.csv2(allRandomTestCase_XDroped, "allRandomTestCase.csv") >> But in the created file "allRandomTestCase.csv" an additional column >> with >> consecutive numbers is automatically added to the column of the data >> frame >> "allRandomTestCase_XDroped". >> >> That is why my question, how can I write data in a file without this >> added >> column? >> >> Cheers, >> >> Lavri >> >> ______________________________________________ >> R-help@r-project.org 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. >> > ______________________________________________ R-help@r-project.org 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. ______________________________________________ R-help@r-project.org 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.