Re: [R] find and add text

Hi, No problem. Try: data.frame(col1=data,col2=as.character(factor(gsub("\\d+","",data),labels=c("positive","negative"))),stringsAsFactors=FALSE) A.K. Hello Arun, Thank you so much,  it works great. But I some sets, the data contains some additional characters also, like a1, a2, a3..

Re: [R] find and add text

Hi, You may try: dat2 <- data.frame(col1=data,col2=as.character(factor(data,labels=c("positive","negative"))),stringsAsFactors=FALSE) A.K. Hello all, I have a data something like this; data<- c("a", "b","b","b","a","a","b","a","b") and I need to represent all "a"'s as "positive"  and "b"