Why is there no c.factor?
On Thu, Feb 4, 2010 at 10:45 AM, Patrick Burns <pburns at pburns.seanet.com> wrote:
The argument I have in 'The R Inferno' is that how you want to combine factors may differ from someone else's desires. There are lots of tricky questions: What about ordered factors? What if the ordered levels are different in different objects?
Ordered factors are trickier. I'd suggest the following compromise: * if all orders are the same, return an ordered factor * if not, return a factor with a warning Hadley