Or if you prefer not to load an entire suite of packages to do such a simple task you could use
b$PHENO <- ifelse(...) or in this specific case it seems sufficient to do b$PHENO <- pmax(b$FLASER, b$PLASER) /Ege On Wed, 2020-04-29 at 15:30 -0400, Patrick (Malone Quantitative) wrote: > If you don't mind using tidyverse, you can do this easily with > if_else. > > b$PHENO<-if_else(... > > > > On Wed, Apr 29, 2020 at 3:21 PM Ana Marija < > sokovic.anamar...@gmail.com> > wrote: > > > Hello, > > > > I have a data frame like this: > > > > > head(b) > > > > FID IID FLASER PLASER > > 1: fam1000 G1000 1 1 > > 2: fam1001 G1001 1 1 > > 3: fam1003 G1003 1 2 > > 4: fam1005 G1005 1 1 > > 5: fam1009 G1009 2 1 > > 6: fam1052 G1052 1 1 > > ... > > > > My conditions for creating a new column PHENO would be this: > > > > if FLASER or PLASER =2 then PHENO=2 > > otherwise PHENO=1 > > > > so result would look like this: > > > > > head(b) > > > > FID IID FLASER PLASER PHENO > > 1: fam1000 G1000 1 1 1 > > 2: fam1001 G1001 1 1 1 > > 3: fam1003 G1003 1 2 2 > > 4: fam1005 G1005 1 1 1 > > 5: fam1009 G1009 2 1 2 > > 6: fam1052 G1052 1 1 1 > > ... > > > > Thanks > > Ana > > ... > > > > ______________________________________________ > > 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. > > > > -- Ege Rubak, Associate Professor, Department of Mathematical Sciences, Aalborg University Skjernvej 4A, 9220 Aalborg East, Denmark Phone: (+45)99408861 Mobile: (+45)30230252 Email: ru...@math.aau.dk ______________________________________________ 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.
