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.