[R] unorder an ordered factor

[David Winsemius]

On Apr 18, 2010, at 6:03 AM, David.Epstein wrote:

>
> Given an ordered factor, how does one unorder it?
> I tried various commands with reorder, with order=F, but they all  
> gave me
> error messages. I also tried to drop the order with various 'as dot
> something' commands, but these didn't work either.

 > ord <- ordered(4:1)
 > str(ord)
  Ord.factor w/ 4 levels "1"<"2"<"3"<"4": 4 3 2 1
 > unclass(ord)
[1] 4 3 2 1
attr(,"levels")
[1] "1" "2" "3" "4"
 > factor(unclass(ord))
[1] 4 3 2 1
Levels: 1 2 3 4
 > is.ordered(factor(unclass(ord)))
[1] FALSE

So this appears to be the way --->

 > ord <- factor(unclass(ord))
 >
 > str(ord)
  Factor w/ 4 levels "1","2","3","4": 4 3 2 1
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David Winsemius, MD
West Hartford, CT