You may have a typo/misstatement in your question. You define a data frame with 5 columns, each of which has 10 elements, so your data frame has dimensions 10 x 5. Then you request a new COLUMN which will have only 5 elements, which is not allowed. All columns of a data frame must have the same length.
On Mon, Jul 29, 2019 at 8:42 PM Ana Marija <sokovic.anamar...@gmail.com> wrote: > I have data frame which looks like this: > > df=data.frame( > eye_problemsdisorders_f6148_0_1=c(A,C,D,NA,D,A,C,NA,B,A), > eye_problemsdisorders_f6148_0_2=c(B,C,NA,A,C,B,NA,NA,A,D), > eye_problemsdisorders_f6148_0_3=c(C,A,D,D,B,A,NA,NA,A,B), > eye_problemsdisorders_f6148_0_4=c(D,D,NA,B,A,C,NA,C,A,B), > eye_problemsdisorders_f6148_0_5=c(C,C,NA,D,B,C,NA,D,D,B)) > > In reality I have much more columns and they don't always match > "eye_problemsdisorders_f6148" this string, and there is much more rows. > > What I would like to do is create a new column, say named "case" where I > would have value "1" for every row where string "A" appears at least once > in any column, if not the value would be "0". So in the above example > column "case" would have these values: 1,1,1,1,0 > Thanks > Ana > > [[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. > [[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.
