search for: 10011049

Hi, I am really puzzled by this. hope someone can help me I have a 2 small data frames "a" and "b" derived from a larger data frames. They look exactly the same to me, but identical() always returns FALSE. > a a b 2 10011048 L 4 10011048 R 6 10011049 L 8 10011049 R > b a b 1 10011048 L 3 10011048 R 5 10011049 L 7 10011049 R > identical(a,b) [1] FALSE some information about the attributes of the 2 data frames: > class(a) [1] "data.frame" > class(b) [1] "data.frame" > class(a$a) [1] "integer&quo...