Hi,
> dd <- data.frame(A=c("b","c","a"), B=3:1)
> dd
A B
1 b 3
2 c 2
3 a 1
> unlist(dd)
A1 A2 A3 B1 B2 B3
2 3 1 3 2 1
Someone else might get something different. It all depends on the
values of its 'stringsAsFactors' option:
> dd2 <- data.frame(A=c("b","c","a"), B=3:1, stringsAsFactors=FALSE)
> dd2
A B
1 b 3
2 c 2
3 a 1
> unlist(dd2)
A1 A2 A3 B1 B2 B3
"b" "c" "a" "3" "2" "1"
Same thing with as.character:
> as.character(dd)
[1] "c(2, 3, 1)" "c(3, 2, 1)"
> as.character(dd2)
[1] "c(\"b\", \"c\", \"a\")" "c(3, 2, 1)"
Bug or "feature"?
Note that as.character applied directly on dd$A doesn't
have this "feature":
> as.character(dd$A)
[1] "b" "c" "a"
> as.character(dd2$A)
[1] "b" "c" "a"
Cheers,
H.
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
