Dear All, Sorry for the previous mail,suppose this data.frame D
V7 V8 V9 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 C C C C T T G G A A C C G G C C G G T T A A A A T A T T C C G G C C C C T T G G A A C C G G C C I would translate D as follow ( just for the first line) C C T G A C G C C C T G A C G C (V8 under V7) (V9 under V10) ... Any help would be appreciated Regards M [[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.