Tena koe Karena See ?sub and ?gsub
HTH ... Peter Alspach > -----Original Message----- > From: [email protected] [mailto:r-help-boun...@r- > project.org] On Behalf Of karena > Sent: Thursday, 5 August 2010 12:56 p.m. > To: [email protected] > Subject: [R] questions about string handling > > > Hi, I have a question about the data handling. I have a dataset as > following: > ID snp1 snp2 snp3 > 1001 0/0 1/1 1/1 > 1002 2/2 3/3 1/1 > 1003 4/4 3/3 2/2 > > I want to convert the dataset to the following format: > ID snp1 snp2 snp3 > 1001 00 AA AA > 1002 GG CC AA > 1003 TT CC GG > > thing to be done: > 1) take the '/' off > 2) replace the numbers with letters, 0 not change. 1=A, 2=G, 3=C, 4=T > > what is the most efficient way to do it? > > thanks you very much, > > karena > -- > View this message in context: http://r.789695.n4.nabble.com/questions- > about-string-handling-tp2314335p2314335.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > [email protected] 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. ______________________________________________ [email protected] 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.
