Chris82 <rubenbauar <at> gmx.de> writes: > > > Hello R users, > > I have a little problem with a for loop. > Below there is an simple example of my problem. > > I want to delet the commas in the character string. Fore this reason I > create a for loop to unpick the string and rebuild him without the commas. > The problem is, that "paste" does not work in the loop as I expected. > > text <- "aaa,bbb,ccc,ddd" > > characterseq <- seq(1,15,4) > > for (i in characterseq ){ > m <- paste(substring(text,i,i+2),sep = "") > } > > > m > [1] "ddd" > > m should be "aaabbbcccddd" and not just "ddd" >
If you want to delete commas, what about gsub(",","",c("aaa,bbb,ccc,ddd")) [1] "aaabbbcccddd" ? The problem with your loop is that you are not building m; you would need paste(m,substring(text,i,i+2),sep="") ______________________________________________ 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.