Hi Kurt,
Thank you very much for clarifying this.
I hope that some documentation may be
written about these commands and added
to one of the manuals in the future.
+ Elliot
On Wed, 5 Jan 2011, Kurt Hornik wrote:
Elliot Todd Kleiman writes:
Hi Kurt,
Thank you for the info!
However, I w
Dear Peter,
You hit the nail on the head: I didn't (and don't) understand why mod.1
works -- which I attributed to my imperfect understanding of non-standard
evaluation. Even if there's a bug allowing mod.1 to work, I wonder about the
consequences of fixing it. That might break a lot of code. It w
On Jan 5, 2011, at 14:44 , John Fox wrote:
> Dear Gabor,
>
> I used str() to look at the two objects but missed the difference that you
> found. What I didn't quite understand was why one model worked but not the
> other when both were defined at the command prompt in the global
> environment.
> Thaler, Thorn, LAUSANNE, Applied Mathematics
>
> on Wed, 5 Jan 2011 11:20:47 +0100 writes:
> Hi everybody, Is there a particular reason, why this code
> does not work as intended:
> z <- factor(LETTERS[1:3], ordered = TRUE)
> u <- 4:6
> min(z[u > 4])
>
Dear Gabor,
I used str() to look at the two objects but missed the difference that you
found. What I didn't quite understand was why one model worked but not the
other when both were defined at the command prompt in the global
environment.
Thanks,
John
John Fox
Dear Peter,
I played around a bit with your suggestion but wasn't able to get it to
work.
Thanks for this.
John
John Fox
Senator William McMaster
Professor of Social Statistics
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web: socser
Hi everybody,
Is there a particular reason, why this code does not work as intended:
z <- factor(LETTERS[1:3], ordered = TRUE)
u <- 4:6
min(z[u > 4])
Error in Summary.factor(2:3, na.rm = FALSE) :
min not meaningful for factors
I agree that min is indeed not meaningful for not
