Re: [R] Search for common character strings within a column

HI, In case if you wanted to take "BC" and "CB" as the same. dat1<- read.table(text="    Seq,Output  A B B C D A C,Yes  B C A C B D A C,Yes C D A A C D,No ",sep=",",header=TRUE,stringsAsFactors=FALSE) lapply(str_split(str_trim(dat1$Seq)," ")[dat1$Output=="Yes"],function(x) {x1<-t(combn(x,2)); x2<

Re: [R] Search for common character strings within a column

Hi, May be this helps: Not sure how you wanted to select those two letters.  dat1<- read.table(text="    Seq,Output  A B B C D A C,Yes  B C A C B D A C,Yes C D A A C D,No ",sep=",",header=TRUE,stringsAsFactors=FALSE) library(stringr) lapply(str_split(str_trim(dat1$Seq)," ")[dat1$Output=="Yes"],f