Hi Hana, I think this is what you want: # first read in your example mydf<-read.table(text= "IDnumber OA EA beta 1 C A -0.05 2 G A 0.098 3 G T -0.789", header=TRUE,stringsAsFactors=FALSE) # check it mydf IDnumber OA EA beta 1 1 C A -0.050 2 2 G A 0.098 3 3 G T -0.789 # change values of mydf$beta to absolute values mydf$beta<-abs(mydf$beta) mydf IDnumber OA EA beta 1 1 C A 0.050 2 2 G A 0.098 3 3 G T 0.789
Jim On Sun, Jun 12, 2022 at 8:27 AM hanatezera <hanatez...@gmail.com> wrote: > > I have the following data set in data frameIDnumber OA EA beta1 > C A -0.052 G A > 0.0983 G T -0.789....I want to change > the sign of negative beta. If the negative value change to postive i want to > switch its EA and OA.My desire result will beIDnumber OA EA beta1 > A C 0.052 G A > 0.0983 T G 0.789....Any one can help > me with r codes? kind regards,Hana > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
