Re: [R] How to replace strings in data frames by condition

Hi Jim, I just tried the code and it worked perfectly! You brought me a huge step nearer to my bachelors degree ;) thank you very much! Robert -- View this message in context: http://r.789695.n4.nabble.com/How-to-replace-strings-in-data-frames-by-condition-tp4712469p4712491.html Sent from the

Re: [R] How to replace strings in data frames by condition

Hi Robert, In your example, all of the numeric values are single digit. If this is the case in the real data, I think this will do: # assume edf is the name of the data frame levels(edf$q_1_SQ009)<-c(levels(edf$q_1_SQ009),"0") edf$q_1_SQ009[is.na(edf$q_1_SQ009)]<-"0" get_first_char<-function(x) re

[R] How to replace strings in data frames by condition

Hi, this is my first post in this forum and I am new to Ra. I am desperately seeking for help. There is a data frame given in which I want to replace some values like following: Existing data frame: q_1_SQ009 1 4 2 3