Here you want the name of the column, not the data frame: nadata <- data.frame(predict_SO2_a=NA)
instead of nadata <- data.frame(dat1=NA) Then it will work. ------- David > -----Original Message----- > From: arun [mailto:smartpink...@yahoo.com] > Sent: Friday, June 29, 2012 2:01 PM > To: dcarl...@tamu.edu > Cc: R help > Subject: Re: [R] Insert row in specific location between data frames > > Hi David, > > I am getting error messages with the code. > dat1<-read.table(text=" > predict_SO2_a > 1 39.793231 > 2 30.252578 > 3 32.467584 > 4 31.941509 > 5 27.908320 > 6 11.594137 > 7 9.368125 > 8 12.319093 > 9 11.558811 > 10 7.937192 > 11 11.211306 > 12 12.400342 > 13 12.393146 > 14 13.256160 > 15 10.709600 > 16 9.966334 > 17 28.850652 > 18 10.024405 > ",sep="",header=TRUE) > > > topdata <- dat1[1:10, , drop=FALSE] > bottomdata <- dat1[11:nrow(dat1), , drop=FALSE] > nadata <- data.frame(dat1=NA) > d2 <- data.frame(rbind(topdata, nadata, bottomdata), row.names=NULL) > > > Error in match.names(clabs, names(xi)) : > names do not match previous names > > > A.K. > > > > > ----- Original Message ----- > From: David L Carlson <dcarl...@tamu.edu> > To: 'Peter Ehlers' <ehl...@ucalgary.ca>; 'pigpigmeow' > <gloryk...@hotmail.com> > Cc: r-help@r-project.org > Sent: Friday, June 29, 2012 2:28 PM > Subject: Re: [R] Insert row in specific location between data frames > > You are having the problem because you have a one column data frame. > When > you extract that column, R converts it to a vector. You can insert the > NA > into the vector and then convert it to a data.frame or you can prevent > R > from converting the data.frame to a vector and insert the row using a > slightly modified version of your code: > > # Prevent conversion to a vector with drop=FALSE > topdata <- predict_SO2_a[1:10, , drop=FALSE] > bottomdata <- predict_SO2_a[11:nrow(predict_SO2_a), , drop=FALSE] > > # Assign a column name in nadata so rbind works properly > nadata <- data.frame(predict_SO2_a=NA) > > # skip d1 step and merge everything at once. rbind() gives you a > # data frame, but the row.names are messed up, this command fixes that > d2 <- data.frame(rbind(topdata, nadata, bottomdata), row.names=NULL) > > ---------------------------------------------- > David L Carlson > Associate Professor of Anthropology > Texas A&M University > College Station, TX 77843-4352 > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > > project.org] On Behalf Of Peter Ehlers > > Sent: Friday, June 29, 2012 1:04 PM > > To: pigpigmeow > > Cc: r-help@r-project.org > > Subject: Re: [R] Insert row in specific location between data frames > > > > > > On 2012-06-29 10:01, pigpigmeow wrote: > > > Hi everyone! I have a simple question. > > > > > > my data is > > > predict_SO2_a > > > 1 39.793231 > > > 2 30.252578 > > > 3 32.467584 > > > 4 31.941509 > > > 5 27.908320 > > > 6 11.594137 > > > 7 9.368125 > > > 8 12.319093 > > > 9 11.558811 > > > 10 7.937192 > > > 11 11.211306 > > > 12 12.400342 > > > 13 12.393146 > > > 14 13.256160 > > > 15 10.709600 > > > 16 9.966334 > > > 17 28.850652 > > > 18 10.024405 > > > > > > > > > > > > I want to insert row which is "NA" in 10th row > > > > Try this: > > > > d <- data.frame(x = 101:118, y = rnorm(18)) > > d2 <- data.frame( > > rbind(head(d, 9), NA, tail(d, -9)), > > row.names = NULL) > > > > Peter Ehlers > > > > > > > > that is .. > > > predict_SO2_a > > > 1 39.793231 > > > 2 30.252578 > > > 3 32.467584 > > > 4 31.941509 > > > 5 27.908320 > > > 6 11.594137 > > > 7 9.368125 > > > 8 12.319093 > > > 9 11.558811 > > > 10 NA > > > .... > > > and it becomes 19 rows in this data. > > > > > > > > > however, I can't do this. my scipt is following > > > topdata<- predict_SO2_a[1:10,] > > > bottomdata<- predict_SO2_a[11:nrow(predict_SO2_a),] > > > nadata<- data.frame(NA) > > > d1<- rbind(topdata,nadata) > > > d2<- rbind(d1, bottomdata) > > > > > > what is my problem?! > > > > > > Thank in advance! > > > > > > > > > > > > > > > -- > > > View this message in context: http://r.789695.n4.nabble.com/Insert- > > row-in-specific-location-between-data-frames-tp4634905.html > > > Sent from the R help mailing list archive at Nabble.com. > > > > > > ______________________________________________ > > > 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. ______________________________________________ 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.