Thanks Louis! That seems to work! On Fri, Feb 8, 2013 at 10:06 AM, Louis Aslett <lasl...@louisaslett.com>wrote:
> I believe your problem stems from using ifelse() actually ... it > requires the statements which it runs to return a value with the same > shape as the test, which write.table() isn't doing. > > Just change it to a regular if with an else and you'll be fine: > > for(i in 1:2){ > mat <- data.frame(sample(1:30,9),3,3) > colnames(mat) <- letters[1:3] > if(i == 1){ > write.table(mat,paste('test.txt',sep=''),row.names=F) > } else { > > write.table(mat,paste('test.txt',sep=''),row.names=F,col.names=F,append=TRUE) > } > } > > Hope that helps, > > Louis > > > On Fri, Feb 8, 2013 at 2:40 PM, Brian Smith <bsmith030...@gmail.com> > wrote: > > > > Hi, > > > > I am trying to append tables on file with this sample code: > > > > for(i in 1:2){ > > mat <- data.frame(sample(1:30,9),3,3) > > colnames(mat) <- letters[1:3] > > ifelse(i == > > 1,write.table(mat,paste('test.txt',sep=''),row.names=F), > > > > > write.table(mat,paste('test.txt',sep=''),row.names=F,col.names=F,append=TRUE)) > > } > > > > However, this gives an error: > > > > "Error in ifelse(i == 1, write.table(mat, paste("test.txt", sep = ""), : > > replacement has length zero" > > > > - Should I be passing in some other parameters or using a different > > function to append tables to file? > > > > thanks! > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > 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. > [[alternative HTML version deleted]] ______________________________________________ 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.