quot;
>> # use R's parsing and evaluation to turn '"a", "b"' into c("a", "b"), and
>> turn that
>> # into a matrix containing character vectors of various lengths.
>> matrix(lapply(parse(text=paste("c(", x, &qu
uot;c" "d" "a" "j" "f"
>
>> (y <- cbind(x, "A-B"=apply(x, 1, function(ab) setdiff(ab[[1]],
>> ab[[2]]
> A B A-B
> 1 Character,2 Character,5 "b"
> 2 Character,2 Charact
Hi,
I have a matrix with two columns, and the elements of the matrix are
vectors.
So for example, in line 3 of column 1 I have a vector v31=("marc", "robert,
"marie").
What I need to do is to compare all vectors in column 1 and 2, so as to get,
for example setdiff(v31,v32) into a new column.
I
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