Split a column of character vectors and return a list

Question

I have the following dataframe:

df <- data.frame(Sl.No = c(1:6),
                 Variable = c(\'a\', \'a,b\', \'a,b,c\', \'b\', \'c\', \'b,c\'))


         


        

Answer 1

We can split the Variable column at "," and get all the values and select only the unique ones.

unique(unlist(strsplit(df$Variable, ",")))
#[1] "a" "b" "c"

If the Variable column is factor convert it into character before using strsplit.