Inheriting from factors + co.
On 24 Feb 2004 at 21:38, Uwe Ligges wrote:
setClass("myclass", representation("ANY", x = "numeric", y
="numeric"))
new("myclass", 1:10) # works
new("myclass", "Test") # works
new("myclass", factor(1:10)) # fails
Why do you think it fails?
I was typing faster than thinking. It doesn't actually fail but what I get is
a numeric vector with a levels attribute. If I specify a factor as .Data
part I expect that the created object IS a factor and
is.factor(new("myclass", factor(1:10))) returns TRUE.
It works perfectly for me with R-1.8.1 for Windows. You haven't told anything about your R version, I suspect your are using an outdated one.
Sorry, forgot that one. I'm also using R 1.8.1 on Windows. Thanks, Torsten